首页 > 最新文献

Emirates Journal of Food and Agriculture最新文献

英文 中文
Effect of 1-methylcyclopropene on jackfruit with marketing simulation at 8°C 1-甲基环丙烯对8℃市场模拟菠萝蜜的影响
4区 农林科学 Q3 AGRONOMY Pub Date : 2023-09-09 DOI: 10.9755/ejfa.2023.3150
David Antonio Morelos-Flores, Martina Alejandra Chacón-López, Efigenia Montalvo-González, María de Lourdes García-Magaña, Yolanda Nolasco-González, Luis Martín Hernández-Fuentes, Héctor González-Hernández
Jackfruit is a tropical fruit and competes with traditional crops such as mango, banana, and pineapple with regard to the quantity exported from the state of Nayarit, Mexico. Because jackfruit is a climacteric fruit with a high respiration rate and ethylene production, it has a limited market due to its short shelf life. The effect of the application of 1-methylcyclopropene (1-MCP) post-harvest to extend the shelf life of jackfruit was studied. Physiologically mature fruits were used and 1-MCP was applied at concentrations of 300, 600, and 1000 nL·L−1; control fruit without treatment was also evaluated. The fruits were stored for 5 days at 8°C and then were stored at 25°C to simulate the commercialization of the fruit. An absolute control group stored permanently at 25°C was used. The following analyses were carried out: physiologic and physicochemical factors, antioxidant capacity, vitamin C, total carotenoids, total soluble phenols, and sensory evaluation of the fruits when ripe. The climacteric peak for the absolute controls and fruit treated with 1-MCP (300, 600, and 1000 nL·L−1) occurred on days 3, 14, 17, and 17 respectively, prolonging the climacteric peak by an average of 13 days. The maximum rates of ethylene production were reported on days 3, 15, 17, and 17 in the same order, prolonging this by an average of 13 days. The treatment with 1-MCP (600 nL·L−1) extended the shelf life of jackfruit by 9 days compared with the absolute control, preserving the physicochemical, phytochemical, and sensory characteristics for up to 17 days of storage, confirming that the application of 1-MCP post-harvest is effective, providing the opportunity to increase the export destinations of Mexican jackfruit. Keywords: Jackfruit; 1-Methylcyclopropene; Marketing conditions; Physiologic and physicochemical parameters; Total soluble phenols; Antioxidant capacity
菠萝蜜是一种热带水果,在从墨西哥纳亚里特州出口的数量上与芒果、香蕉和菠萝等传统作物竞争。由于菠萝蜜是一种具有高呼吸速率和乙烯产量的更年期水果,由于其保质期短,市场有限。研究了菠萝蜜采后施用1-甲基环丙烯(1-MCP)对延长菠萝蜜保质期的影响。选用生理成熟的果实,分别施用300、600和1000 nL·L−1浓度的1- mcp;对未经处理的对照果实也进行了评价。将水果在8°C下保存5天,然后在25°C下保存,模拟水果的商业化。25℃永久保存的绝对对照组。对果实的生理、理化因素、抗氧化能力、维生素C、总类胡萝卜素、总可溶性酚以及果实成熟后的感官评价进行了分析。绝对对照和1- mcp(300、600和1000 nL·L−1)处理的果实分别在第3天、第14天、第17天和第17天达到更年期高峰,平均延长了13天。乙烯产率最高的时间依次为第3、15、17和17天,平均延长了13天。与绝对对照相比,1- mcp (600 nL·L−1)处理将菠萝蜜的保质期延长了9天,保留了菠萝蜜的物理化学、植物化学和感官特征长达17天的储存时间,证实了1- mcp在收获后的应用是有效的,为增加墨西哥菠萝蜜的出口目的地提供了机会。 关键词:菠萝蜜;1-Methylcyclopropene;营销环境;生理、理化参数;总可溶性酚;抗氧化能力
{"title":"Effect of 1-methylcyclopropene on jackfruit with marketing simulation at 8°C","authors":"David Antonio Morelos-Flores, Martina Alejandra Chacón-López, Efigenia Montalvo-González, María de Lourdes García-Magaña, Yolanda Nolasco-González, Luis Martín Hernández-Fuentes, Héctor González-Hernández","doi":"10.9755/ejfa.2023.3150","DOIUrl":"https://doi.org/10.9755/ejfa.2023.3150","url":null,"abstract":"Jackfruit is a tropical fruit and competes with traditional crops such as mango, banana, and pineapple with regard to the quantity exported from the state of Nayarit, Mexico. Because jackfruit is a climacteric fruit with a high respiration rate and ethylene production, it has a limited market due to its short shelf life. The effect of the application of 1-methylcyclopropene (1-MCP) post-harvest to extend the shelf life of jackfruit was studied. Physiologically mature fruits were used and 1-MCP was applied at concentrations of 300, 600, and 1000 nL·L−1; control fruit without treatment was also evaluated. The fruits were stored for 5 days at 8°C and then were stored at 25°C to simulate the commercialization of the fruit. An absolute control group stored permanently at 25°C was used. The following analyses were carried out: physiologic and physicochemical factors, antioxidant capacity, vitamin C, total carotenoids, total soluble phenols, and sensory evaluation of the fruits when ripe. The climacteric peak for the absolute controls and fruit treated with 1-MCP (300, 600, and 1000 nL·L−1) occurred on days 3, 14, 17, and 17 respectively, prolonging the climacteric peak by an average of 13 days. The maximum rates of ethylene production were reported on days 3, 15, 17, and 17 in the same order, prolonging this by an average of 13 days. The treatment with 1-MCP (600 nL·L−1) extended the shelf life of jackfruit by 9 days compared with the absolute control, preserving the physicochemical, phytochemical, and sensory characteristics for up to 17 days of storage, confirming that the application of 1-MCP post-harvest is effective, providing the opportunity to increase the export destinations of Mexican jackfruit.
 Keywords: Jackfruit; 1-Methylcyclopropene; Marketing conditions; Physiologic and physicochemical parameters; Total soluble phenols; Antioxidant capacity","PeriodicalId":11648,"journal":{"name":"Emirates Journal of Food and Agriculture","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136264516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microwave-assisted puffing of Dendrobium officinale for higher extraction rate of polysaccharides 微波辅助膨化法提高铁皮石斛多糖提取率
4区 农林科学 Q3 AGRONOMY Pub Date : 2023-09-05 DOI: 10.9755/ejfa.2023.3148
Yanhong Li, Zuoqiang Wang, Tingting Li, Xishan Bai, Kai Tian, Xiangzhong Huang
In order to increase the extraction rate of Dendrobium officinale polysaccharides, microwave puffing was used to process its fresh stems and the processing parameters were optimized. Response surface methodology was used to analyze the effects of sample length (1–5cm), moisture content (15%–25%), microwave power (550–790 W), and microwave processing time (20–40 s) on the expansion ratio. The results showed that the optimized expansion ratio of 371.7% was achieved at the following conditions, i.e., sample length of 3.5 cm, moisture content of 23%, microwave power of 706 W, and processing time of 35 s. It was found that polysaccharides were extracted more readily from puffed D. officinale than from non-puffed D. officinale by 41.8%. Moreover, the bioactivities of polysaccharides from puffing D. officinale and non-puffing D. officinale were evaluated and compared in lipid peroxidation inhibition and anti-hyperglycemic assays. Keywords: Dendrobium officinale; Microwave puffing; Polysaccharides; Lipid peroxidation; Anti-hyperglycemic activity
为了提高铁皮石斛多糖的提取率,采用微波膨化法对铁皮石斛鲜茎进行加工,并对工艺参数进行了优化。采用响应面法分析试样长度(1 ~ 5cm)、含水率(15% ~ 25%)、微波功率(550 ~ 790w)、微波处理时间(20 ~ 40s)对膨胀比的影响。结果表明,在样品长度为3.5 cm、含水率为23%、微波功率为706 W、处理时间为35 s的条件下,膨胀率为371.7%。结果表明,膨化铁皮石斛多糖提取率比未膨化铁皮石斛高41.8%。此外,我们还比较了膨化和非膨化铁皮水仙多糖在抑制脂质过氧化和抗高血糖方面的活性。 关键词:铁皮石斛;微波膨化;多糖;脂质过氧化作用;Anti-hyperglycemic活动
{"title":"Microwave-assisted puffing of Dendrobium officinale for higher extraction rate of polysaccharides","authors":"Yanhong Li, Zuoqiang Wang, Tingting Li, Xishan Bai, Kai Tian, Xiangzhong Huang","doi":"10.9755/ejfa.2023.3148","DOIUrl":"https://doi.org/10.9755/ejfa.2023.3148","url":null,"abstract":"In order to increase the extraction rate of Dendrobium officinale polysaccharides, microwave puffing was used to process its fresh stems and the processing parameters were optimized. Response surface methodology was used to analyze the effects of sample length (1–5cm), moisture content (15%–25%), microwave power (550–790 W), and microwave processing time (20–40 s) on the expansion ratio. The results showed that the optimized expansion ratio of 371.7% was achieved at the following conditions, i.e., sample length of 3.5 cm, moisture content of 23%, microwave power of 706 W, and processing time of 35 s. It was found that polysaccharides were extracted more readily from puffed D. officinale than from non-puffed D. officinale by 41.8%. Moreover, the bioactivities of polysaccharides from puffing D. officinale and non-puffing D. officinale were evaluated and compared in lipid peroxidation inhibition and anti-hyperglycemic assays.
 Keywords: Dendrobium officinale; Microwave puffing; Polysaccharides; Lipid peroxidation; Anti-hyperglycemic activity","PeriodicalId":11648,"journal":{"name":"Emirates Journal of Food and Agriculture","volume":"307 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135368848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wheat plant response to zinc enrichment: results from a big plot assay 小麦植株对锌富集的反应:一个大型小区试验的结果
4区 农林科学 Q3 AGRONOMY Pub Date : 2023-09-05 DOI: 10.9755/ejfa.2023.3149
Sara Rodrigo, Fernando J. Lidon, Fernando H. Reboredo, M. Manuela Silva, María M. Simões, A. Rita Costa
One third of the global population suffers Zn deficiency, which directly affects their health and the health-bill of all world countries. In this study, the application of Zn sulphate at the latest developing stages (anthesis and milk-dough stages) of bread wheat in Mediterranean conditions were tested for grain and leaves enrichment capacity and antioxidant activities prompting. Variety effects were found to be significant to success in enriching leaves and grains with Zn. While Almansor and Roxo varieties increased more than 50% and close to 40% respectively their amount in grain Zn, no significant differences were found for Paiva variety with or without Zn treatment. Regarding the leaves, Zn amount increases of 110, 230 and 300 ppm of Zn were figured out in Almansor, Roxo and Paiva varieties respectively. Antioxidant compounds in leaves showed to be higher when zinc treatment was applied in Almansor variety. Quality traits of the grain wheat were barely affected by the increase of the Zn amount; Roxo variety grains increased the protein and the dry gluten concentration, while Almansor grains were heavier and Almansor flour showed higher tenacity. It can be concluded that Zn enrichment in wheat plants caused variation in both grain and leaves mineral profile, and antioxidants in leaves. Keywords: Antioxidants, Rainfed conditions, RXF, Winter cereals, Zinc
全球三分之一的人口患有缺锌症,这直接影响到人们的健康和世界各国的卫生账单。研究了在地中海条件下面包小麦发育后期(开花期和制乳期)施用硫酸锌对籽粒和叶片的富集能力和抗氧化活性的促进作用。品种效应对叶片和籽粒锌的富集有显著影响。Almansor和Roxo的籽粒锌含量分别增加了50%以上和接近40%,而Paiva的籽粒锌含量在加锌和不加锌的情况下差异不显著。在叶片方面,Almansor、Roxo和Paiva分别增加了110、230和300 ppm的Zn。锌处理对苜蓿叶片中抗氧化物质含量的影响较大。锌用量的增加对籽粒小麦品质性状影响不大;Roxo籽粒提高了蛋白质含量和干面筋浓度,Almansor籽粒较重,Almansor面粉韧性较高。由此可见,锌的富集引起了小麦籽粒和叶片矿物组分的变化,以及叶片抗氧化剂的变化。关键词:抗氧化剂,旱作条件,RXF,冬季谷物,锌
{"title":"Wheat plant response to zinc enrichment: results from a big plot assay","authors":"Sara Rodrigo, Fernando J. Lidon, Fernando H. Reboredo, M. Manuela Silva, María M. Simões, A. Rita Costa","doi":"10.9755/ejfa.2023.3149","DOIUrl":"https://doi.org/10.9755/ejfa.2023.3149","url":null,"abstract":"One third of the global population suffers Zn deficiency, which directly affects their health and the health-bill of all world countries. In this study, the application of Zn sulphate at the latest developing stages (anthesis and milk-dough stages) of bread wheat in Mediterranean conditions were tested for grain and leaves enrichment capacity and antioxidant activities prompting. Variety effects were found to be significant to success in enriching leaves and grains with Zn. While Almansor and Roxo varieties increased more than 50% and close to 40% respectively their amount in grain Zn, no significant differences were found for Paiva variety with or without Zn treatment. Regarding the leaves, Zn amount increases of 110, 230 and 300 ppm of Zn were figured out in Almansor, Roxo and Paiva varieties respectively. Antioxidant compounds in leaves showed to be higher when zinc treatment was applied in Almansor variety. Quality traits of the grain wheat were barely affected by the increase of the Zn amount; Roxo variety grains increased the protein and the dry gluten concentration, while Almansor grains were heavier and Almansor flour showed higher tenacity. It can be concluded that Zn enrichment in wheat plants caused variation in both grain and leaves mineral profile, and antioxidants in leaves.
 Keywords: Antioxidants, Rainfed conditions, RXF, Winter cereals, Zinc","PeriodicalId":11648,"journal":{"name":"Emirates Journal of Food and Agriculture","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135368849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fungal inhibition by lactic acid bacteria (LAB) is modulated in vitro by cocoa fermentation-related conditions: towards a biocontrol of fungi in processing cocoa 乳酸菌(LAB)对真菌的抑制作用在体外由可可发酵相关条件调节:在可可加工过程中对真菌的生物防治
4区 农林科学 Q3 AGRONOMY Pub Date : 2023-09-01 DOI: 10.9755/ejfa.2023.3146
Honoré Ouattara, Wilfried Yao, Hadja Ouattara, Karou Germain, Niamke Sebastien
Fungal growth impair strongly the quality of processed cocoa, leading to low crops value for farmers and manufacturers. The antifungal activity of lactic acid bacteria (LAB) from fermenting cocoa was analyzed and the conditions of fungal inhibition were evaluated. Fungi were isolated from stored fermented and dried cocoa beans on sabouraud plate medium. The results showed that, LAB strongly inhibit fungi isolated from fermented cocoa beans notably Mucors and Aspergilli, with Lactobacillus plantarum inducing the stronger inhibition whereas Leuconostoc mesenteroides produced a weaker inhibition. Acids production assayed by HPLC was found to be not related to antifungal activity, since LAB strains producing strong antifungal activity were not necessarly the best acid producers. Maximum fungal inhibition occured at 35 °C in Lactobacillus plantarum and Leuconostoc mesenteroides but also at 30 °C in Lactobacllus casei. Likewise, a narrow acidic pH range (3.0-4.0) allowed full expression of fungal inhibtion in LAB analyzed that decreased progressively toward pH 7.0 and failed at alkalin pH. However, sucrose even at high content (8%) was found to have no effect on antifungal activity of LAB, but its bioconversion product glucose and fructose decreased this activity when concentrations were set at 6 et 2 %, respectively. All together, the results suggest that, LAB may effectively exert fungal inhibition in a narrow timing of cocoa fermentation, with pulp contained sugars as metabolic regulators of this inhibition. These results may contribute to a better management of LAB as starter culture for an efficient inhibition of fungal growth and prevention of cocoa contamination from mycotoxins. Key Words : Antifungal activity ; lactic acid bacteria ; cocoa fermentation ; inhibition variation; pH and temperature ; sugars content.
真菌的生长严重损害了加工可可的质量,导致农民和制造商的作物价值降低。对可可发酵过程中乳酸菌的抑菌活性进行了分析,并对抑菌条件进行了评价。在sabouraud平板培养基上,从发酵和干燥的可可豆中分离真菌。结果表明,乳酸菌对发酵可可豆中分离的真菌有较强的抑制作用,其中对植物乳杆菌的抑制作用较强,对肠系膜Leuconostoc的抑制作用较弱。高效液相色谱法测定的产酸量与抗真菌活性无关,因为抗真菌活性强的乳酸菌不一定是最好的产酸菌。植物乳杆菌和肠系膜白色乳杆菌在35°C时抑菌效果最好,而干酪乳杆菌在30°C时抑菌效果最好。同样,在较窄的酸性pH范围内(3.0-4.0),真菌抑制作用可以在LAB中充分表达,当pH值接近7.0时,真菌抑制作用逐渐降低,而在碱性pH下则失效。然而,即使在高含量的蔗糖(8%)中,也发现蔗糖对LAB的抗真菌活性没有影响,但当其生物转化产物葡萄糖和果糖的浓度分别设定为6%和2%时,这种活性也会降低。综上所述,结果表明,乳酸菌可能在可可发酵的一个狭窄时间内有效地发挥真菌抑制作用,果肉中含有糖作为这种抑制的代谢调节剂。这些结果可能有助于更好地管理乳酸菌作为发酵剂,以有效抑制真菌生长和防止真菌毒素污染可可。 关键词:抗真菌活性;乳酸菌;可可发酵;抑制变异;pH和温度;糖含量。
{"title":"Fungal inhibition by lactic acid bacteria (LAB) is modulated in vitro by cocoa fermentation-related conditions: towards a biocontrol of fungi in processing cocoa","authors":"Honoré Ouattara, Wilfried Yao, Hadja Ouattara, Karou Germain, Niamke Sebastien","doi":"10.9755/ejfa.2023.3146","DOIUrl":"https://doi.org/10.9755/ejfa.2023.3146","url":null,"abstract":"Fungal growth impair strongly the quality of processed cocoa, leading to low crops value for farmers and manufacturers. The antifungal activity of lactic acid bacteria (LAB) from fermenting cocoa was analyzed and the conditions of fungal inhibition were evaluated. Fungi were isolated from stored fermented and dried cocoa beans on sabouraud plate medium. The results showed that, LAB strongly inhibit fungi isolated from fermented cocoa beans notably Mucors and Aspergilli, with Lactobacillus plantarum inducing the stronger inhibition whereas Leuconostoc mesenteroides produced a weaker inhibition. Acids production assayed by HPLC was found to be not related to antifungal activity, since LAB strains producing strong antifungal activity were not necessarly the best acid producers. Maximum fungal inhibition occured at 35 °C in Lactobacillus plantarum and Leuconostoc mesenteroides but also at 30 °C in Lactobacllus casei. Likewise, a narrow acidic pH range (3.0-4.0) allowed full expression of fungal inhibtion in LAB analyzed that decreased progressively toward pH 7.0 and failed at alkalin pH. However, sucrose even at high content (8%) was found to have no effect on antifungal activity of LAB, but its bioconversion product glucose and fructose decreased this activity when concentrations were set at 6 et 2 %, respectively. All together, the results suggest that, LAB may effectively exert fungal inhibition in a narrow timing of cocoa fermentation, with pulp contained sugars as metabolic regulators of this inhibition. These results may contribute to a better management of LAB as starter culture for an efficient inhibition of fungal growth and prevention of cocoa contamination from mycotoxins.
 Key Words : Antifungal activity ; lactic acid bacteria ; cocoa fermentation ; inhibition variation; pH and temperature ; sugars content.","PeriodicalId":11648,"journal":{"name":"Emirates Journal of Food and Agriculture","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135428098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of Gibberellic acid and Methionine on growth, flowering quality, leaf anatomical structure and genetic diversity of Chrysanthemum morifolium Ramat plant 赤霉素酸和蛋氨酸对菊花生长、开花品质、叶片解剖结构和遗传多样性的影响
4区 农林科学 Q3 AGRONOMY Pub Date : 2023-09-01 DOI: 10.9755/ejfa.2023.3144
Eman Zaky Othman, Rasha Ahmed El-Ziat, Hend Mohamed Farag, Iman Mohamed El-Sayed
Ornamental plants are grown all over the world. In most countries, Chrysanthemum is considered one of the most popular cuts and potted flowers. Plants were sprayed with gibberellic acid (GA3) at concentrations (100, 200, and 300 ppm) and methionine (ME) at levels (200, 400, and 600 ppm), as bio-growth stimulants in the pre-blooming stage. The morphological and flowering parameters significantly increased by increasing the concentration of GA3. The highest values of K%, P%, total carbohydrates content, total phenols, total chlorophylls, and carotenoids in the leaf were obtained from gibberellic acid treatment at the rate of 300 ppm, while methionine at 600 ppm gave the highest value of protein in flowers. Also, various levels of gibberellic acid application significantly showed variation for days to initiation of Chrysanthemum flowers. The results of leaf anatomy showed an increase in most characteristics such as (thickness of the main vein, lamina, and spongy tissue) under study when spraying with gibberellic acid, especially at the concentration of 300 and methionine 600 ppm; respectively compared with control. Furthermore, inter-simple sequence repeat (ISSR) analysis has provided a powerful molecular marker for identifying variation with control and the best treatments. Therefore, the utilization of 300 ppm GA3 a plant growth regulator and 600 ppm ME an amino acid, these treatments are recommended to enhance Chrysanthemum parameters which lead to increasing its economic value as cut flowers and flowering potted plants as well as pharmaceuticals industries and multi-chemical uses. Keywords: Cut flowers; bio-growth stimulants; ISSR; leaf anatomy, growth regulators.
世界各地都种植观赏植物。在大多数国家,菊花被认为是最受欢迎的插花和盆花之一。在开花前阶段,分别喷洒浓度为100、200和300 ppm的赤霉素(GA3)和浓度为200、400和600 ppm的蛋氨酸(ME)作为生物生长刺激剂。随着GA3浓度的增加,植株的形态和开花参数显著增加。赤霉素酸浓度为300 ppm时,叶片K%、P%、总碳水化合物含量、总酚、总叶绿素和类胡萝卜素含量最高,而蛋氨酸浓度为600 ppm时,花中蛋白质含量最高。不同剂量的赤霉素对菊花的萌发也有显著的影响。叶片解剖结果显示,喷施黄曲霉酸后,叶脉、叶面和海绵组织的厚度均有所增加,其中蛋氨酸浓度为600 ppm和300 ppm时增幅最大;分别与对照组比较。此外,ISSR分析为鉴定对照变异和最佳处理提供了强有力的分子标记。因此,建议使用300 ppm的植物生长调节剂GA3和600 ppm的氨基酸,这些处理可以提高菊花的参数,从而提高其作为切花和开花盆栽植物的经济价值,以及制药工业和多种化学用途。 关键词:切花;bio-growth兴奋剂;ISSR;叶片解剖,生长调节剂。
{"title":"Influence of Gibberellic acid and Methionine on growth, flowering quality, leaf anatomical structure and genetic diversity of Chrysanthemum morifolium Ramat plant","authors":"Eman Zaky Othman, Rasha Ahmed El-Ziat, Hend Mohamed Farag, Iman Mohamed El-Sayed","doi":"10.9755/ejfa.2023.3144","DOIUrl":"https://doi.org/10.9755/ejfa.2023.3144","url":null,"abstract":"Ornamental plants are grown all over the world. In most countries, Chrysanthemum is considered one of the most popular cuts and potted flowers. Plants were sprayed with gibberellic acid (GA3) at concentrations (100, 200, and 300 ppm) and methionine (ME) at levels (200, 400, and 600 ppm), as bio-growth stimulants in the pre-blooming stage. The morphological and flowering parameters significantly increased by increasing the concentration of GA3. The highest values of K%, P%, total carbohydrates content, total phenols, total chlorophylls, and carotenoids in the leaf were obtained from gibberellic acid treatment at the rate of 300 ppm, while methionine at 600 ppm gave the highest value of protein in flowers. Also, various levels of gibberellic acid application significantly showed variation for days to initiation of Chrysanthemum flowers. The results of leaf anatomy showed an increase in most characteristics such as (thickness of the main vein, lamina, and spongy tissue) under study when spraying with gibberellic acid, especially at the concentration of 300 and methionine 600 ppm; respectively compared with control. Furthermore, inter-simple sequence repeat (ISSR) analysis has provided a powerful molecular marker for identifying variation with control and the best treatments. Therefore, the utilization of 300 ppm GA3 a plant growth regulator and 600 ppm ME an amino acid, these treatments are recommended to enhance Chrysanthemum parameters which lead to increasing its economic value as cut flowers and flowering potted plants as well as pharmaceuticals industries and multi-chemical uses.
 Keywords: Cut flowers; bio-growth stimulants; ISSR; leaf anatomy, growth regulators.","PeriodicalId":11648,"journal":{"name":"Emirates Journal of Food and Agriculture","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135428279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nutritionally improved pasta with Arthrospira platensis: effect of cooking on antioxidant capacity and pigments content 营养改良的平节螺旋体面食:烹调对抗氧化能力和色素含量的影响
4区 农林科学 Q3 AGRONOMY Pub Date : 2023-09-01 DOI: 10.9755/ejfa.2023.3147
García-Moncayo, Aldo. Iván, Rodríguez-Martínez, Erika. Sireni, Ochoa-Reyes, Emilio, Sáenz-Hidalgo, Hilda. Karina, Sepúlveda, David. Roberto, Buenrostro-Figueroa, José. Juan, Alvarado-González, Monica
The functionalizing of staple and economic foods, which means adding health-promoting substances, has been visualized as a solution to reduce the concerning increase in diet-related diseases caused by bad-eating patterns. Microalgae represent an innovative way to solve this problem. Arthrospira platensis, microalgae nutritionally rich in bioactive compounds, has been used to develop hard wheat pasta (semolina) to improve its nutritional value and provide antioxidant properties, but there is scarce information about the effect of adding A. platensis in a soft wheat pasta with egg on these parameters. Given that, this work aimed to assess the effect of adding A. platensis at 1, 5, and 10% in a soft wheat pasta added with egg on the nutritional value. Besides, the total phenolic content (TPC), antioxidant capacity (by FRAP and ABTS), and the spectrophotometric estimation of chlorophylls a + b as well as total carotenoids content were determined after and before cooking. The results showed that adding A. platensis at 5% was enough to increase raw pasta's nutritional value, especially protein by 19.27%, TPC by 3.88%, antioxidant capacity by 48.54%, and 66.09% for ABTS and FRAP respectively, as well as chlorophyll a + b (5.89 mg/100g) and total carotenoids (1.31 mg/100g). After the cooking process losses of 7.40, 16.81 and 0.51% were evidenced for TPC, ABTS and FRAP assays, however, remained 10.63, 62.37 and 70.65% higher than the cooked control. Furthermore, increases of 92.19 and 54.96% for chlorophyll a+b and total carotenoids were evidenced. The addition of A. platensis to pasta represents a way to improve the nutritional value regarding protein content, increase antioxidant capacity, and the content of chlorophylls and carotenoids, without statistically significant modifications in the caloric content. Keywords: Antioxidant, Arthrospira platensis, Carotenoids, Chlorophylls, Functional Food, Pasta.
主食和经济食品的功能化,即添加促进健康的物质,已被视为一种解决办法,以减少由不良饮食模式引起的与饮食有关的疾病的增加。微藻是解决这一问题的一种创新方法。platarthrospira platensis是一种富含生物活性化合物的微藻,已被用于制作硬麦面食(小麦粉),以提高其营养价值和抗氧化性能,但关于在带蛋的软麦面食中添加platarthrospira platensis对这些参数的影响的研究很少。鉴于此,本工作旨在评估在添加鸡蛋的软质小麦面食中添加1.5%、5%和10%的白桦对营养价值的影响。测定蒸煮前后总酚含量(TPC)、抗氧化能力(FRAP和ABTS法)、叶绿素a + b和类胡萝卜素含量的分光光度法测定。结果表明,添加5%的白刺足以使生面食的营养价值,尤其是蛋白质、TPC、抗氧化能力、ABTS和FRAP分别提高19.27%、3.88%、48.54%和66.09%,叶绿素a + b (5.89 mg/100g)和总类胡萝卜素(1.31 mg/100g)。蒸煮后,TPC、ABTS和FRAP的损失分别为7.40%、16.81%和0.51%,但仍比蒸煮后的对照组高出10.63%、62.37%和70.65%。叶绿素a+b和总类胡萝卜素含量分别提高了92.19%和54.96%。在面食中添加扁豆可以提高其蛋白质含量、抗氧化能力、叶绿素和类胡萝卜素含量等营养价值,而其热量含量没有统计学意义上的显著变化。 关键词:抗氧化剂,平节螺旋藻,类胡萝卜素,叶绿素,功能食品,面食
{"title":"Nutritionally improved pasta with Arthrospira platensis: effect of cooking on antioxidant capacity and pigments content","authors":"García-Moncayo, Aldo. Iván, Rodríguez-Martínez, Erika. Sireni, Ochoa-Reyes, Emilio, Sáenz-Hidalgo, Hilda. Karina, Sepúlveda, David. Roberto, Buenrostro-Figueroa, José. Juan, Alvarado-González, Monica","doi":"10.9755/ejfa.2023.3147","DOIUrl":"https://doi.org/10.9755/ejfa.2023.3147","url":null,"abstract":"The functionalizing of staple and economic foods, which means adding health-promoting substances, has been visualized as a solution to reduce the concerning increase in diet-related diseases caused by bad-eating patterns. Microalgae represent an innovative way to solve this problem. Arthrospira platensis, microalgae nutritionally rich in bioactive compounds, has been used to develop hard wheat pasta (semolina) to improve its nutritional value and provide antioxidant properties, but there is scarce information about the effect of adding A. platensis in a soft wheat pasta with egg on these parameters. Given that, this work aimed to assess the effect of adding A. platensis at 1, 5, and 10% in a soft wheat pasta added with egg on the nutritional value. Besides, the total phenolic content (TPC), antioxidant capacity (by FRAP and ABTS), and the spectrophotometric estimation of chlorophylls a + b as well as total carotenoids content were determined after and before cooking. The results showed that adding A. platensis at 5% was enough to increase raw pasta's nutritional value, especially protein by 19.27%, TPC by 3.88%, antioxidant capacity by 48.54%, and 66.09% for ABTS and FRAP respectively, as well as chlorophyll a + b (5.89 mg/100g) and total carotenoids (1.31 mg/100g). After the cooking process losses of 7.40, 16.81 and 0.51% were evidenced for TPC, ABTS and FRAP assays, however, remained 10.63, 62.37 and 70.65% higher than the cooked control. Furthermore, increases of 92.19 and 54.96% for chlorophyll a+b and total carotenoids were evidenced. The addition of A. platensis to pasta represents a way to improve the nutritional value regarding protein content, increase antioxidant capacity, and the content of chlorophylls and carotenoids, without statistically significant modifications in the caloric content.
 Keywords: Antioxidant, Arthrospira platensis, Carotenoids, Chlorophylls, Functional Food, Pasta.","PeriodicalId":11648,"journal":{"name":"Emirates Journal of Food and Agriculture","volume":"372 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135428280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High throughput sequencing data reveals the complete mitogenome, abundance, maternal phylogeny, and mitogenomic diversity of Alectoris chukar of Iraq 高通量测序数据揭示了伊拉克Alectoris chukar的完整有丝分裂基因组,丰度,母系系统发育和有丝分裂基因组多样性
4区 农林科学 Q3 AGRONOMY Pub Date : 2023-08-31 DOI: 10.9755/ejfa.2023.3143
Paiman Yousif, Hevidar Taha
Alectoris chukar is a wild game bird found in the north of Iraq, near the center of domestication and diversity of species. The mitogenome is one of the most vital resources for comprehensive studies of genetic diversity and molecular evolutionary relationships among avian species. In this study, we used whole genome sequencing raw reads and bioinformatics analysis to sequence and assemble Alectoris chukar's complete mitogenome for the first time. We also studied the maternal lineage and phylogenetic position of Alectoris chukar, as well as some mitogenomic diversity parameters. As a result, the complete mitogenomes with a length ranging from 16686 bp to 16688 bp of four individuals of wild Alectoris chukar were sequenced and assembled. They have a typical avian mitogenome structure with 2 ribosomal RNA (rRNA), 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, and one non-coding control region. Our findings from bioinformatics analysis remarkably demonstrated that copies of the mitogenome are more abundant in liver tissues than in blood and in the liver tissues of females than in males. The results of phylogenetic analysis clustered the studied mitogenomes with Alectoris chukar as a monophyletic clade. Moreover, in comparison to the different genera, Alectoris chukar showed a high level of mitogenomic similarities to the snowcock species of the genus Tetraogallus within the Phasianidae family. However, they were more distant from other partridges. Additionally, a high percentage of mitogenomic pairwise identities within Iraqi Alectoris chukar and high mitogenomic variations compared to Chinese populations were discovered. The number and location of polymorphic sites indicated that the majority of the mitogenome sequences were conserved, with the control region, ND5, and CYTB genes having the most polymorphic sites. Analyses of phylogenetic and mitogenomic diversity revealed that samples of Alectoris chukar from Iraq have a unique maternal lineage and mitogenomic diversity specific to their geographic distribution, suggesting an Alectoris chukar kurdestanica subspecies. The molecular findings presented here provide valuable knowledge and mitogenomic resources into the evolutionary relationships of Alectoris chukar from the Middle East to avian species in the Phasianidae family. Key words: DNA sequencing; Mitochondrial genome; Partridges; Phasianidae; Phylogeny
Alectoris chukar是一种野生猎鸟,发现于伊拉克北部,靠近物种驯化和多样性中心。有丝分裂基因组是全面研究鸟类遗传多样性和分子进化关系的重要资源之一。本研究首次采用全基因组测序和生物信息学分析的方法,对楚卡阿立托里斯有丝分裂全基因组进行了测序和组装。我们还研究了楚卡喙鸟的母系和系统发育位置,以及一些有丝分裂基因组多样性参数。结果,对4个野生楚卡阿利托利亚个体的全长为16686 ~ 16688 bp的全有丝分裂基因组进行了测序和组装。它们具有典型的鸟类有丝分裂基因组结构,包括2个核糖体RNA (rRNA)、13个蛋白质编码基因(PCGs)、22个转移RNA (tRNA)基因和一个非编码控制区。我们从生物信息学分析中发现,有丝分裂基因组的拷贝在肝脏组织中比在血液中更丰富,在女性的肝脏组织中比在男性的肝脏组织中更丰富。系统发育分析的结果表明,所研究的有丝分裂基因组与楚卡角翅虫属于单系进化分支。此外,在不同属的比较中,Alectoris chukar显示出高度的丝分裂基因组相似性。然而,它们与其他鹧鸪的距离更远。此外,与中国人群相比,伊拉克阿勒克托里斯chukar人群中有丝分裂基因组成对认同的比例很高,有丝分裂基因组变异也很高。多态性位点的数量和位置表明,大多数有丝分裂基因组序列是保守的,其中控制区、ND5和CYTB基因具有最多的多态性位点。系统发育和有丝分裂基因组多样性分析表明,伊拉克的阿勒克托里斯chukar样品具有独特的母系血统和地理分布特有的有丝分裂基因组多样性,表明其为阿勒克托里斯chukar kurdestanica亚种。本文的分子研究结果为研究中东鸦爪鸟与雉科鸟类的进化关系提供了宝贵的知识和有丝分裂基因组学资源。关键词:DNA测序;线粒体基因组;鹧鸪;雉科;发展史# x0D;
{"title":"High throughput sequencing data reveals the complete mitogenome, abundance, maternal phylogeny, and mitogenomic diversity of Alectoris chukar of Iraq","authors":"Paiman Yousif, Hevidar Taha","doi":"10.9755/ejfa.2023.3143","DOIUrl":"https://doi.org/10.9755/ejfa.2023.3143","url":null,"abstract":"Alectoris chukar is a wild game bird found in the north of Iraq, near the center of domestication and diversity of species. The mitogenome is one of the most vital resources for comprehensive studies of genetic diversity and molecular evolutionary relationships among avian species. In this study, we used whole genome sequencing raw reads and bioinformatics analysis to sequence and assemble Alectoris chukar's complete mitogenome for the first time. We also studied the maternal lineage and phylogenetic position of Alectoris chukar, as well as some mitogenomic diversity parameters. As a result, the complete mitogenomes with a length ranging from 16686 bp to 16688 bp of four individuals of wild Alectoris chukar were sequenced and assembled. They have a typical avian mitogenome structure with 2 ribosomal RNA (rRNA), 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, and one non-coding control region. Our findings from bioinformatics analysis remarkably demonstrated that copies of the mitogenome are more abundant in liver tissues than in blood and in the liver tissues of females than in males. The results of phylogenetic analysis clustered the studied mitogenomes with Alectoris chukar as a monophyletic clade. Moreover, in comparison to the different genera, Alectoris chukar showed a high level of mitogenomic similarities to the snowcock species of the genus Tetraogallus within the Phasianidae family. However, they were more distant from other partridges. Additionally, a high percentage of mitogenomic pairwise identities within Iraqi Alectoris chukar and high mitogenomic variations compared to Chinese populations were discovered. The number and location of polymorphic sites indicated that the majority of the mitogenome sequences were conserved, with the control region, ND5, and CYTB genes having the most polymorphic sites. Analyses of phylogenetic and mitogenomic diversity revealed that samples of Alectoris chukar from Iraq have a unique maternal lineage and mitogenomic diversity specific to their geographic distribution, suggesting an Alectoris chukar kurdestanica subspecies. The molecular findings presented here provide valuable knowledge and mitogenomic resources into the evolutionary relationships of Alectoris chukar from the Middle East to avian species in the Phasianidae family.
 Key words: DNA sequencing; Mitochondrial genome; Partridges; Phasianidae; Phylogeny
","PeriodicalId":11648,"journal":{"name":"Emirates Journal of Food and Agriculture","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135991229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of Camel Owners’ Knowledge and Practical Behaviors and its Implication on Environmental Sustainability 骆驼主人知识与实践行为评价及其对环境可持续性的启示
4区 农林科学 Q3 AGRONOMY Pub Date : 2023-08-23 DOI: 10.9755/ejfa.2023.3142
Ahmed Ismail Hussien Ismail, Mutasim Mekki Elrasheed, Marzook Al-Ekna, Mohammed Elhassan Seliaman
This study aimed to assess camel owners’ knowledge and practical behavior (KPB) in Saudi Arabia (KSA) and their implications on environmental sustainability. The study depended mainly on primary data. An online questionnaire survey was used to collect data from 267 respondents, in 2022. Descriptive and analytical techniques were used to achieve the stated objectives. Results revealed that, the majority of camels’ owners (91.7%) have low cumulative KPB, which was evident in their traditional practice and non-commercial methods in herd management. Moreover, large numbers of breeders do not sell their milk production due to their traditions, thus, about 23% of them gained no profits. Results also showed that, about 85% of owners were located in the lower level of using cost items (modern technology and labor training), accordingly, 96.6% fall within the low level of profit category. Likewise, about 75% of camels’ owners’ grazing behavior were located in the lower and medium level groups. Furthermore, the cumulative (KPB) effect of age, educational level, main job, training levels, cost of production and grazing behavior were found to be statistically significant in explaining CKPB variations of camels’ owners in KSA. The R-2 indicated that 59% of the variations in the dependent variable was explained by the variations of the independent variables. The also revealed the presence of high degree of positive association between camels’ owners’ CKPB and environmental sustainability. This study stresses on the importance of execution of sound agricultural extension programs and veterinary campaigns to improve camels’ owners’ CKPB. Key words: Camel Raising, Environmental Sustainability, Grazing Behavior, Knowledge and Practical Behavior, KSA.
本研究旨在评估沙特阿拉伯骆驼主人的知识和实践行为(KPB)及其对环境可持续性的影响。这项研究主要依靠原始资料。2022年,一项在线问卷调查收集了267名受访者的数据。使用了描述和分析技术来实现所述目标。结果表明,绝大多数(91.7%)骆驼主人的累积KPB较低,这体现在他们传统的放牧方式和非商业管理方式中。此外,由于传统原因,大量养殖户不出售他们的牛奶产品,因此,约23%的养殖户没有获得利润。结果还显示,约85%的业主位于使用成本较低的项目(现代技术和劳动力培训),相应地,96.6%的业主属于低利润水平。同样,大约75%的骆驼主人的放牧行为位于中低水平群体。此外,年龄、受教育程度、主要职业、培训水平、生产成本和放牧行为的累积效应在解释骆驼主人CKPB变化方面具有统计学意义。R-2表明,59%的因变量变化可以用自变量的变化来解释。研究还发现,骆驼主人的CKPB与环境可持续性存在高度正相关。本研究强调了实施健全的农业推广计划和兽医运动以改善骆驼主人CKPB的重要性。& # x0D;关键词:骆驼饲养,环境可持续性,放牧行为,知识与实践行为,KSA
{"title":"Assessment of Camel Owners’ Knowledge and Practical Behaviors and its Implication on Environmental Sustainability","authors":"Ahmed Ismail Hussien Ismail, Mutasim Mekki Elrasheed, Marzook Al-Ekna, Mohammed Elhassan Seliaman","doi":"10.9755/ejfa.2023.3142","DOIUrl":"https://doi.org/10.9755/ejfa.2023.3142","url":null,"abstract":"This study aimed to assess camel owners’ knowledge and practical behavior (KPB) in Saudi Arabia (KSA) and their implications on environmental sustainability. The study depended mainly on primary data. An online questionnaire survey was used to collect data from 267 respondents, in 2022. Descriptive and analytical techniques were used to achieve the stated objectives. Results revealed that, the majority of camels’ owners (91.7%) have low cumulative KPB, which was evident in their traditional practice and non-commercial methods in herd management. Moreover, large numbers of breeders do not sell their milk production due to their traditions, thus, about 23% of them gained no profits. Results also showed that, about 85% of owners were located in the lower level of using cost items (modern technology and labor training), accordingly, 96.6% fall within the low level of profit category. Likewise, about 75% of camels’ owners’ grazing behavior were located in the lower and medium level groups. Furthermore, the cumulative (KPB) effect of age, educational level, main job, training levels, cost of production and grazing behavior were found to be statistically significant in explaining CKPB variations of camels’ owners in KSA. The R-2 indicated that 59% of the variations in the dependent variable was explained by the variations of the independent variables. The also revealed the presence of high degree of positive association between camels’ owners’ CKPB and environmental sustainability. This study stresses on the importance of execution of sound agricultural extension programs and veterinary campaigns to improve camels’ owners’ CKPB. 
 Key words: Camel Raising, Environmental Sustainability, Grazing Behavior, Knowledge and Practical Behavior, KSA.","PeriodicalId":11648,"journal":{"name":"Emirates Journal of Food and Agriculture","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135620724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamics of acid phosphatase production by cell suspension system and its further characterization 细胞悬浮体系生产酸性磷酸酶的动力学及其进一步表征
4区 农林科学 Q3 AGRONOMY Pub Date : 2023-08-21 DOI: 10.9755/ejfa.2023.3141
Saima Khan, Sharada Mallubhotla, Malik Muzafar Manzoor, Sandeep Singh Pagoch, Ashok Ahuja
The current study compares the influence of media engineered media on production of acid phophatase (APase) with its characterization in suspension cell cultures of Atropa acuminata, authenticated by rbcL and ITS. Various parameters like pH, inoculum size, temperature, nutrient sources in the medium were optimized for APase hyperproduction in in vitro conditions. APase production was accomplished to be evidently amplified at 5% inoculum size (94.90 U/gFW), pH 5.0(99.75 U/gFW) and incubation temperature of 30°C (91.5U/gFW). Sucrose as carbon and ammonium nitrate as nitrogen sources were eminently suited for maximum enzyme harvest (91.20 U/gFW and 94.56 U/gFW). The APase activity was observed to be distinctly increased in phosphate (Pi) starved suspension cells (197.84 U/gFW). Overall, 6.5 fold increase in APase activity was achieved as compared to the activity before optimization studies. Hence the present Apase production and its activity from Atropa acuminata suspension culture may have apparent use for future industrial, agricultural and biotechnological application. Keywords: Acuminata; Acid phosphatase; p-nitrophenylphosphate; Suspension cells; Pi-starvation
本研究通过rbcL和its验证,比较了培养基工程培养基对酸性磷酸酶(APase)产生的影响及其在阿特拉帕(Atropa acuminata)悬浮细胞培养中的特性。在体外条件下,对pH、接种量、温度、培养基营养来源等参数进行了优化。在接种量为5% (94.90 U/gFW)、pH为5.0(99.75 U/gFW)、培养温度为30℃(91.5U/gFW)的条件下,APase产量明显增加。蔗糖作为碳源和硝酸铵作为氮源最适合酶收获(91.20 U/gFW和94.56 U/gFW)。磷酸(Pi)饥饿悬浮细胞(197.84 U/gFW)的APase活性明显升高。总的来说,与优化研究之前相比,APase活性提高了6.5倍。因此,从悬培养中提取的Apase及其活性在未来的工业、农业和生物技术方面具有明显的应用价值。关键词:Acuminata;酸性磷酸酶;p-nitrophenylphosphate;悬浮细胞;Pi-starvation
{"title":"Dynamics of acid phosphatase production by cell suspension system and its further characterization","authors":"Saima Khan, Sharada Mallubhotla, Malik Muzafar Manzoor, Sandeep Singh Pagoch, Ashok Ahuja","doi":"10.9755/ejfa.2023.3141","DOIUrl":"https://doi.org/10.9755/ejfa.2023.3141","url":null,"abstract":"The current study compares the influence of media engineered media on production of acid phophatase (APase) with its characterization in suspension cell cultures of Atropa acuminata, authenticated by rbcL and ITS. Various parameters like pH, inoculum size, temperature, nutrient sources in the medium were optimized for APase hyperproduction in in vitro conditions. APase production was accomplished to be evidently amplified at 5% inoculum size (94.90 U/gFW), pH 5.0(99.75 U/gFW) and incubation temperature of 30°C (91.5U/gFW). Sucrose as carbon and ammonium nitrate as nitrogen sources were eminently suited for maximum enzyme harvest (91.20 U/gFW and 94.56 U/gFW). The APase activity was observed to be distinctly increased in phosphate (Pi) starved suspension cells (197.84 U/gFW). Overall, 6.5 fold increase in APase activity was achieved as compared to the activity before optimization studies. Hence the present Apase production and its activity from Atropa acuminata suspension culture may have apparent use for future industrial, agricultural and biotechnological application. Keywords: Acuminata; Acid phosphatase; p-nitrophenylphosphate; Suspension cells; Pi-starvation","PeriodicalId":11648,"journal":{"name":"Emirates Journal of Food and Agriculture","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135876558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Construction and application of milk-feed price ratio model - based on data from large scale dairy farms in China 奶料价格比模型的构建与应用——基于中国大型奶牛场数据
4区 农林科学 Q3 AGRONOMY Pub Date : 2023-08-16 DOI: 10.9755/ejfa.2023.3137
Hao Liu, Hua Peng, Chao Zhang, Xiaoxia Dong
Despite rapid development, the Chinese dairy industry still faces problems such as the lack of pricing power for dairy farmers, high fluctuations in raw milk and feed prices, imbalances between supply and demand, and low farming motivation. As an indicator with important geographical characteristics, the milk-feed price ratio (MF) is a critical reference indicator for setting raw milk prices and measuring farm profitability. The main aim of this study is to construct an appropriate milk-feed ratio model for China using statistical data for 2018-2020, which provides references for other developing countries. A vector error correction model was used to illustrate the long-term covariance between raw milk prices and feed prices in China and to analyze the feed structure of large-scale Chinese farms. The study found that the price weights of corn, soybean meal, corn silage, and alfalfa were 27%, 17%, 30%, and 26%, respectively, which are significantly different from those of developed countries, and the parameters of the model for the MF in different production areas in China also varied significantly. The milk-feed ratio in China has remained above 1.89 in the last three years. Seasonal variations in raw milk prices lead to a U-shaped trend in the MF. In recent years the MF in China has changed from a low level to a medium level, showing an upward trend, with large-scale farms at a profitable level. Keywords: Application of MF; Granger causality test; MF model; Large scale farm
尽管发展迅速,但中国乳业仍面临着奶农定价权不足、原料奶和饲料价格波动大、供需失衡、养殖积极性低等问题。奶料价格比(MF)作为具有重要地理特征的指标,是制定原料奶价格和衡量农场盈利能力的重要参考指标。本研究的主要目的是利用2018-2020年的统计数据,构建适合中国的奶料比模型,为其他发展中国家提供参考。采用矢量误差修正模型对中国原料奶价格与饲料价格的长期协方差进行了分析,并对中国规模化养殖场的饲料结构进行了分析。研究发现,玉米、豆粕、玉米青贮和苜蓿的价格权重分别为27%、17%、30%和26%,与发达国家存在显著差异,中国不同产区的MF模型参数也存在显著差异。在过去的三年里,中国的奶料比一直保持在1.89以上。原料奶价格的季节性变化导致MF呈u型趋势。近年来,中国养猪场由低水平向中水平转变,呈上升趋势,规模养殖场处于盈利水平。 关键词:MF应用;格兰杰因果检验;MF模型;大型农场
{"title":"Construction and application of milk-feed price ratio model - based on data from large scale dairy farms in China","authors":"Hao Liu, Hua Peng, Chao Zhang, Xiaoxia Dong","doi":"10.9755/ejfa.2023.3137","DOIUrl":"https://doi.org/10.9755/ejfa.2023.3137","url":null,"abstract":"Despite rapid development, the Chinese dairy industry still faces problems such as the lack of pricing power for dairy farmers, high fluctuations in raw milk and feed prices, imbalances between supply and demand, and low farming motivation. As an indicator with important geographical characteristics, the milk-feed price ratio (MF) is a critical reference indicator for setting raw milk prices and measuring farm profitability. The main aim of this study is to construct an appropriate milk-feed ratio model for China using statistical data for 2018-2020, which provides references for other developing countries. A vector error correction model was used to illustrate the long-term covariance between raw milk prices and feed prices in China and to analyze the feed structure of large-scale Chinese farms. The study found that the price weights of corn, soybean meal, corn silage, and alfalfa were 27%, 17%, 30%, and 26%, respectively, which are significantly different from those of developed countries, and the parameters of the model for the MF in different production areas in China also varied significantly. The milk-feed ratio in China has remained above 1.89 in the last three years. Seasonal variations in raw milk prices lead to a U-shaped trend in the MF. In recent years the MF in China has changed from a low level to a medium level, showing an upward trend, with large-scale farms at a profitable level.
 Keywords: Application of MF; Granger causality test; MF model; Large scale farm","PeriodicalId":11648,"journal":{"name":"Emirates Journal of Food and Agriculture","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135022658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Emirates Journal of Food and Agriculture
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1