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Study of the protective effect of ginseng against testicular oxidative stress biomarkers and its gene expression induced by ciprofloxacin 研究人参对环丙沙星诱导的睾丸氧化应激生物标志物及其基因表达的保护作用
Pub Date : 2023-12-15 DOI: 10.21931/rb/2023.08.04.20
Haitham M. Mokhimar, H. Elsawah, Mohamed M. Kandiel, Faten E. Elsaid, A. El-Mahmoudy
Ciprofloxacin is the first-choice member of the fluoroquinolone antibacterials for treating testicular infections, but it may harm testicular tissue because of oxidative stress. Many mechanisms are involved, like decreasing antioxidant enzymes and suppressing gene expression. This study intends to investigate the possible protective role of ginseng against ciprofloxacin-induced testicular oxidative stress and its mechanism, if any. For this purpose, 50 adult male albino rats were randomly divided into five groups, ten rats in each group. Rats in group 1 received only ciprofloxacin at a daily dose of 156.46 mg/kg. Rats in groups 2, 3 and 4 received ciprofloxacin in a daily dose of 156.46 mg/kg, ginseng in two doses of 100 and 200 mg/kg, and vitamin E as a standard in a daily dose of 100 mg/kg, respectively. Group 5 served as control and received carboxymethylcellulose in normal saline. All these treatments were applied orally during 14 14-day experimental courses. Half the animals in each group were euthanized on day 15 from the start of the treatment, while the second half was euthanized on day 60. Both testes were dissected, immediately frozen, and evaluated for oxidative stress biomarkers and gene expression antioxidant enzymes. We found that ciprofloxacin significantly (P ≤ 0.05) increased MDA and decreased total antioxidant capacity (TAC), superoxide dismutase (SOD) and catalase (CAT) compared to the control group. Also, the drug downregulated gene expression of SOD and CAT. Compared to all groups, the co-administration of ginseng or vitamin E with ciprofloxacin almost normalized antioxidant enzymes and upregulated the tested gene expressions. It could be concluded that ginseng ameliorates the testicular adverse effect of ciprofloxacin. So, it is highly recommended to be used as an adjunct remedy during ciprofloxacin administration for its antioxidant properties. Keywords: Ciprofloxacin, Gene expression, Ginseng, Infertility, ROS, Testicular oxidative stress, Vitamin-E.
环丙沙星是氟喹诺酮类抗菌药物中治疗睾丸感染的首选药物,但它可能会因氧化应激而损害睾丸组织。其中涉及多种机制,如减少抗氧化酶和抑制基因表达。本研究旨在探讨人参对环丙沙星引起的睾丸氧化应激的可能保护作用及其机制。为此,研究人员将 50 只成年雄性白化大鼠随机分为 5 组,每组 10 只。第 1 组大鼠只服用环丙沙星,每日剂量为 156.46 毫克/千克。第 2、3 和 4 组大鼠分别接受每日剂量为 156.46 毫克/千克的环丙沙星、100 毫克/千克和 200 毫克/千克两种剂量的人参以及每日剂量为 100 毫克/千克的标准维生素 E。第 5 组为对照组,在生理盐水中加入羧甲基纤维素。所有这些治疗均在 14 个为期 14 天的实验疗程中口服。每组一半动物在治疗开始后第 15 天安乐死,另一半动物在第 60 天安乐死。解剖并立即冷冻两组动物的睾丸,并对氧化应激生物标志物和抗氧化酶的基因表达进行评估。我们发现,与对照组相比,环丙沙星能显著增加MDA(P≤0.05),降低总抗氧化能力(TAC)、超氧化物歧化酶(SOD)和过氧化氢酶(CAT)。此外,药物还下调了 SOD 和 CAT 的基因表达。与所有组别相比,人参或维生素 E 与环丙沙星联合用药几乎使抗氧化酶恢复正常,并上调了测试基因的表达。由此可以得出结论,人参能改善环丙沙星对睾丸的不良影响。因此,强烈建议在环丙沙星用药期间使用人参作为辅助疗法,因为人参具有抗氧化特性。关键词:环丙沙星环丙沙星 基因表达 人参 不育症 ROS 睾丸氧化应激 维生素E
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引用次数: 0
The Effect of Partial Replacement of Yellow Corn by Iraqi Rice Bran Treated with multi-enzymes on the Broiler Performance 用多种酶处理的伊拉克米糠部分替代黄玉米对肉鸡性能的影响
Pub Date : 2023-12-15 DOI: 10.21931/rb/2023.08.04.85
Tariq S. Almrsomi, A. Hammod, A. Areaaer
Until recently, the central objective of poultry feed formulation was to supply common feedstuff such as corn. Today, the search for sustainable alternatives to traditional feed elements is a primary goal to reduce feed costs. This study was carried out to explore the production performance of the Rice bran in the feeding of broiler Ross 308 chicken. One hundred eighty chicks were fed with Rice bran diets treated with multi-enzyme as a partial replacement (10%) of Yellow Corn. Chicks were distributed into four treatment groups as follows: (L0) control (45% yellow corn), L1, L2 and L3 (10% Rice bran and 35% yellow corn). Rice bran was treated with different amounts of multi-enzymes: 500, 750, and 1000mg of Labazymekg diet, respectively. The results showed a significant (P≤0.05) decrease in the marketing live body weight and total weight gain for broilers fed with 10% Rice bran and 35% yellow corn. The accumulative feed consumption and conversion ratio were unaffected (no significant difference at P≤0.05) when the Rice bran was treated with 1000 mg of Labazymekg diet. This present study concludes that a diet with 10% Rice bran and 35% yellow corn hurts the growth performance of broiler chicken. However, the breeding cost of broiler Ross 308 chicken was reduced when the Rice bran was treated with 1000 mg/kg multi-enzymes (L3 group). There were no effects on the mortality rate of all experimental groups.Keyword: Broiler, Labazyme, Performance, Rice bran, Ross 308.
直到最近,家禽饲料配方的核心目标仍是提供玉米等普通饲料。如今,寻找传统饲料元素的可持续替代品已成为降低饲料成本的首要目标。本研究旨在探讨米糠在饲喂肉鸡罗斯 308 时的生产性能。180 只雏鸡饲喂了用多酶处理的米糠日粮,作为黄玉米的部分替代物(10%)。雏鸡被分成以下四个处理组:(L0)对照组(45% 的黄玉米),L1、L2 和 L3(10% 的米糠和 35% 的黄玉米)。在米糠中添加不同量的多酶制剂:分别为500、750和1000毫克拉巴酶/千克日粮。结果表明,饲喂10%米糠和35%黄玉米的肉鸡的销售活体重和总增重都有明显下降(P≤0.05)。用1000毫克拉巴酶/千克日粮处理米糠时,累积饲料消耗量和转化率未受影响(无显著差异,P≤0.05)。本研究得出结论,添加 10%米糠和 35%黄玉米的日粮会降低肉鸡的生长性能。然而,在米糠中添加 1000 毫克/千克多酶(L3 组)时,肉鸡罗斯 308 的养殖成本降低了。关键词:肉鸡 拉霸酶 性能 米糠 罗斯308鸡
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引用次数: 0
Efficacy of different concentrations of flax plant oil Linum usitatissimum in controlling green peach aphid Myzus persicae (Hemiptera: Aphididae) 不同浓度亚麻植物油对防治桃蚜(半翅目:蚜科)的功效
Pub Date : 2023-12-15 DOI: 10.21931/rb/2023.08.04.58
Haidar H. Al-Kallabe, A. Mohammed, A. A. Kareem
The green peach aphid, Myzus persicae, is a significant insect pest worldwide. The potential for using Linum usitatissimum flax seed oil to control insects has been reported. However, no study has been conducted on the efficacy of flax seed oil against M. persicae. Therefore, this study aimed to evaluate the bioactivity of Linum usitatissimum flax seed oil at four concentrations (1.00, 3.00, 5.00, and 10.0 ml / 100 ml water). The highest mortality of adults (100%) was caused 4 days post-treatment with all tested concentrations.Similarly, the results demonstrate that foliar application of flax seed oil against all nymphal stages caused 100% mortality rates at all concentrations after 4 days of treatment. The rate of nymph production of aphids significantly decreased and reached 0.0 nymph per adult after 4 days. The results suggest that flax seed oil has the potential as a biological control agent of M. persicae. Keywords: botanicals, essential oil, insects, biological control
桃蚜(Myzus persicae)是世界上一种重要的害虫。使用亚麻籽油控制昆虫的潜力已有报道。但是,还没有研究亚麻籽油对柿蚜的功效。因此,本研究旨在评估亚麻籽油在四种浓度(1.00、3.00、5.00 和 10.0 毫升/100 毫升水)下的生物活性。所有测试浓度的亚麻籽油在处理后 4 天对成虫的死亡率最高(100%)。同样,结果表明,叶面喷施亚麻籽油对所有若虫阶段的死亡率在处理 4 天后均为 100%。蚜虫的若虫产生率明显下降,4 天后达到 0.0 个若虫/成虫。结果表明亚麻籽油具有生物防治蚜虫的潜力。关键词:植物、精油、昆虫、生物防治
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引用次数: 0
Efficiency and economic feasibility of using Neonicotinoids against Flat-headed borer Chrysobothris affinis (Fabricius, 1794) (Buprestidae: Coleoptera) infesting Jujube orchards in Basra Province, Iraq 使用新烟碱类杀虫剂防治伊拉克巴士拉省枣园中的扁头蛀虫 Chrysobothris affinis (Fabricius, 1794) (Buprestidae: Coleoptera) 的效率和经济可行性
Pub Date : 2023-12-15 DOI: 10.21931/rb/2023.08.04.57
Mohammed M. Alderawii, Aqeel Alyousuf
A field study evaluated the efficiency and economic feasibility of using three Neonicotinoids to control Flat-headed borers infesting Jujube orchards in Basra Province during 2020 and 2021. The insecticides tested were Acetamiprid, Imidacloprid and Thiamethoxam, with recommended field application rates. This study showed that Acetamiprid and Imidacloprid provided the best protection to jujube trees, reflected in the high average efficiency (88.70% and 93.40%, respectively). Acetamiprid and Thiamethoxam enhanced the production, with an average of 60.10 and 60.00 kg/tree, respectively, compared to 39.50 kg of the check trees. Thus, the study showed the highest economic return from controlling the flat-headed borers using Acetamiprid and Thiamethoxam (5714900 and 5676500 dinars/ dunum, respectively). In contrast, the economic returns of Imidacloprid were 5082900 Iraqi dinars/ dunum. These results confirmed that the high economic feasibility was related to the efficacy of the low-cost insecticides in reducing the fruit infestation rate and increasing the yield. Keywords: Buprestidae; Insecticides; flat-headed borers; Economic visibility; Neonicotinoids.
一项田间研究评估了 2020 年和 2021 年期间使用三种新烟碱类杀虫剂防治侵扰巴士拉省枣园的扁头蛀虫的效率和经济可行性。测试的杀虫剂是啶虫脒、吡虫啉和噻虫嗪,建议的田间施用量是啶虫脒、吡虫啉和噻虫嗪。研究结果表明,啶虫脒和吡虫啉对枣树的保护效果最好,平均效率高(分别为 88.70% 和 93.40%)。啶虫脒和噻虫嗪提高了枣树的产量,平均每棵枣树的产量分别为 60.10 公斤和 60.00 公斤,而对照树的产量为 39.50 公斤。因此,研究表明,使用啶虫脒和噻虫胺防治平头 钻心虫的经济收益最高(分别为 5714900 第纳尔/杜努姆和 5676500 第纳尔/杜努姆)。相比之下,吡虫啉的经济收益为 5082900 伊拉克第纳尔/杜努姆。这些结果证实,高经济可行性与低成本杀虫剂在降低果实虫害率和提高产量方面的功效有关。关键词扁头蛀虫;杀虫剂;经济可行性;新烟碱类。
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引用次数: 0
Variabilidad de actividades enzimáticas en suelos arenosos de playas del Municipio Puerto Cabello, Estado Carabobo, Venezuela 委内瑞拉卡拉沃沃州 Puerto Cabello 市沙滩土壤中酶活性的变化。
Pub Date : 2023-12-15 DOI: 10.21931/rb/2023.08.04.7
Joselyn Albujar, Arnaldo Armado, Jorge Briceño, D. Avalos, Sonia Salazar, Marcelo Rojas
Los ecosistemas costeros reciben impactos negativos por actividades industriales, explotación de especies costeras, actividades turísticas y recreativas, lo que hace necesario evaluar su calidad ambiental. El objetivo de este trabajo fue estudiar la variabilidad de las actividades enzimáticas de catalasa, ureasa y proteasa en suelos arenosos de playas del municipio Puerto Cabello, estado Carabobo para su uso como indicadores de calidad ambiental. Las playas estudiadas fueron El Palito (EP), Waikiki (W) y Playa Blanca (PB). Se establecieron cuatro unidades de muestreo: zona lejana (L), zona cercana (C), zona seca (S), zona húmeda (H), tomando muestras superficiales (s) y sub-superficiales (ss) en época lluviosa y seca. Se determinaron parámetros fisicoquímicos y las actividades enzimáticas de catalasa, ureasa y proteasa. La actividad de catalasa, muestra variabilidad asociada a las zonas evaluadas, pero no se evidencian variaciones estacionales. La actividad de ureasa, refleja una variabilidad con respecto a las zonas de la playa y la fuente contaminante; mientras que la actividad proteasa no muestra variación estacional, pero si respecto a las zonas de la playa y la fuente contaminante. Se evidenció una correlación negativa significativa entre la actividad catalasa y el contenido de arena, retención de humedad, materia orgánica y una correlación positiva entre la actividad de la ureasa y el contenido de materia orgánica. Finalmente, se concluye que las actividades enzimáticas de catalasa, ureasa y proteasa son sensibles ante impactos antropogénicos, por lo que pueden ser usadas como indicadores de calidad en los suelos arenosos evaluados. Palabras clave: Catalasa; indicadores de calidad de suelo; proteasa; suelos arenosos; ureasa.
沿海生态系统受到工业活动、沿海物种开发、旅游和娱乐活动的负面影响,因此有必要对其环境质量进行评估。这项工作的目的是研究卡拉沃沃州卡韦略港市内海滩沙土中过氧化氢酶、脲酶和蛋白酶活性的变化,以作为环境质量的指标。研究的海滩为 El Palito (EP)、Waikiki (W) 和 Playa Blanca (PB)。在雨季和旱季期间,分别建立了四个采样单元:远区(L)、近区(C)、干区(S)、湿区(H),采集地表(s)和地下(ss)样本。测定了理化参数以及过氧化氢酶、脲酶和蛋白酶的酶活性。过氧化氢酶活性随评估区域而变化,但没有明显的季节性变化。尿素酶活性随海滩地区和污染源而变化,蛋白酶活性则没有季节性变化,但随海滩地区和污染源而变化。研究发现,过氧化氢酶活性与含沙量、保湿度和有机物之间存在明显的负相关,而脲酶活性与有机物含量之间存在正相关。最后得出结论:过氧化氢酶、脲酶和蛋白酶的活性对人为影响很敏感,因此它们可用作所评价的沙质土壤的质量指标。关键词:过氧化氢酶;土壤质量指标;蛋白酶;沙质土壤;脲酶。
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引用次数: 0
Evaluación del contenido de metales biodisponibles en suelos arenosos de playas del Municipio Puerto Cabello, Estado Carabobo, Venezuela 评估委内瑞拉卡拉沃沃州卡韦略港市海滩沙质土壤中生物可利用金属的含量。
Pub Date : 2023-12-15 DOI: 10.21931/rb/2023.08.04.16
Joselyn Albujar, Arnaldo Armado, Jorge Briceño, D. Avalos, Sonia Salazar, Marcelo Rojas
Dentro de las sustancias valoradas como contaminantes se encuentran los metales pesados, considerados elementos potencialmente tóxicos. Estas sustancias son motivo de preocupación, ya que son persistentes en los suelos y alteran diversos procesos ecosistémicos que incluyen las interacciones multitróficas. En tal sentido, en esta investigación se plantearon como objetivos evaluar el contenido de metales disponibles y analizar su relación con los parámetros fisicoquímicos y biológicos de suelos arenosos de playas del municipio Puerto Cabello, estado Carabobo. Los parámetros fisicoquímicos determinados fueron: textura, pH, conductividad, retención de humedad, materia orgánica, carbono orgánico total y capacidad de intercambio catiónico Los parámetros biológicos fueron: actividad microbiológica, carbono de biomasa microbiana, actividades enzimáticas de catalasa, ureasa y proteasa. La extracción de los metales se realizó utilizando una mezcla de EDTA, CaCl2.2H2O y Trietanolamina y la determinación se llevó a cabo por Espectrofotometría de absorción atómica a la llama. Los metales evaluados fueron: Cu, Cr, Ni y Pb. Dentro de los resultados obtenidos se tiene que sólo se detectó en su forma disponible el plomo y éste se correlacionó de forma positiva con el pH y de manera negativa con la respiración edáfica. Finalmente, se concluye que las concentraciones de Plomo disponible en los suelos arenosos evaluados, no superan los límites máximos permitidos en diversas normativas ambientales en el mundo; sin embargo, superan el valor establecido en el Decreto N° 2635 de Venezuela para lixiviados (5 mg/l) permitiendo inferir que estos suelos están impactados por este metal.Palabras clave: Suelo arenoso, metales biodisponibles, contaminación.
在被评估为污染物的物质中,重金属被认为是潜在的有毒元素。这些物质之所以令人担忧,是因为它们在土壤中具有持久性,会改变生态系统的各种过程,包括多营养交互作用。因此,本研究的目的是评估可用金属的含量,并分析它们与卡拉沃沃州卡韦略港市海 滩沙质土壤的物理化学和生物参数之间的关系。测定的物理化学参数包括:质地、pH 值、电导率、保湿性、有机质、总有机碳和阳离子交换容量;生物参数包括:微生物活性、微生物生物量碳、过氧化氢酶、脲酶和蛋白酶的酶活性。使用乙二胺四乙酸(EDTA)、氯化钙(CaCl2.2H2O)和三乙醇胺的混合物提取金属,并用火焰原子吸收分光光度法进行测定。评估的金属包括:铜、铬、镍和铅。在所得结果中,只有铅以可利用的形式被检测到,它与 pH 值呈正相关,与土壤呼吸呈负相关。最后,得出的结论是,所评估的沙质土壤中的可利用铅浓度没有超过世界上各种环境法规允许的最高限值;但是,它们超过了委内瑞拉第 2635 号法令规定的沥滤液值(5 毫克/升),因此可以推断这些土壤受到了这种金属的影响。
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引用次数: 0
Biological, serological and molecular characterization of Potato virus Y strains isolated from potato (Solanum tuberosum L.) 从马铃薯(Solanum tuberosum L.)中分离出的马铃薯病毒 Y 株系的生物学、血清学和分子鉴定
Pub Date : 2023-12-15 DOI: 10.21931/rb/2023.08.04.60
Dena Zuheer, Hameed Ali
Viral diseases are among the most critical determinants of potato production in many parts of the world, and this is reflected in the importance of developing early diagnosis methods to detect these diseases in the fields. The study showed that potato fields in Nineveh Province are infected with several strains of Potato Y virus, depending on the symptoms of potato or indicator plants and serological tests. For the first time locally in Nineveh Province and at the level of Iraq, using a single molecular test and one step, it was possible to distinguish between the ancient parental strains (PVYº and PVYN), as well as between the PVYNTNT hybrid strain resulting from recombination between the genome of the parental strains when using the pairs of primers N-868-7-F + N -9236-R, which yielded a genome segment of DNA with a length of 441 bp. The emergence of such a new strain in the tested samples in the potato fields in Nineveh province infected with PVY may have arisen from mixed infections. Keywords: PVY strains; PVYN; RT-PCR; Solanum tuberosum L.
在世界许多地区,病毒病是决定马铃薯产量的最关键因素之一,这反映了开发早期诊断方法以检测田间这些病害的重要性。研究表明,根据马铃薯或指示植物的症状和血清学测试,尼尼微省的马铃薯田感染了多种马铃薯Y病毒株。在尼尼微省当地和伊拉克一级,首次使用单一分子检测和一个步骤,就能区分古老的亲本株(PVYº 和 PVYN),以及亲本株基因组重组产生的 PVYNTNT 杂交株,使用的引物为 N-868-7-F + N -9236-R 对,产生的 DNA 基因组片段长度为 441 bp。在尼尼微省受 PVY 感染的马铃薯田间检测样本中出现这种新菌株可能是混合感染所致。关键词PVY 株系 PVYN RT-PCR Solanum tuberosum L.
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引用次数: 0
Prediction Total Digestible Nutrient value of forage and feedstuffs from their chemical characteristics 根据草料和饲料的化学特性预测其可消化营养总值
Pub Date : 2023-12-15 DOI: 10.21931/rb/2023.08.04.23
F. Sarubbi, G. Auriemma, Raffaele Pappalardo, Giuseppe Grazioli
Total Digestible Nutrient Value of forage and concentrate and nutritional characteristics and develop a prediction equation using the chemical composition variables as predictors. Nutrient chemical characteristics data were obtained from 278 forage and 87 feedstuffs. The data included dry and organic matter, crude protein, ether extract, ash, fiber composition, and non-fiber Carbohydrate. Stepwise regression was used to eliminate variables that did not influence variation in the model and used 0.05 as the critical probability level. Data were then randomly divided into two parts; two-thirds of the data was used to estimate the Total Digestible Nutrient, whereas the remaining part was used to validate the estimated Total Digestible Nutrient and was analyzed by multiple linear regressions. Total Digestible Nutrient in forage was negatively correlated with Ether Extract, Acid Detergent Lignin, and Non-fibre Carbohydrate (P<0.01) but positively correlated with Crude Protein (P<0.01), ash, Neutral Detergent Fibre, and Acid Detergent Fiber. Total Digestible Nutrient in feedstuffs was negatively correlated with NFC (P<0.01) but positively correlated with Neutral Detergent Fibre (P<0.01), Acid Detergent Lignin (P<0.01), Ether Extract (P<0.01), Crude Protein (P<0.01), ash, and Acid Detergent Fiber (P<0.01). The results show that the Total Digestible Nutrient content can be accurately estimated starting from the chemical composition. Keywords: total digestible nutrient; forage; concentrate; feed analysis.
草料和精料的可消化总营养价值以及营养特性,并利用化学成分变量作为预测因子建立预测方程。营养化学特征数据来自 278 种饲草和 87 种饲料。数据包括干物质和有机物质、粗蛋白、醚提取物、灰分、纤维成分和非纤维碳水化合物。采用逐步回归法剔除不影响模型变化的变量,并以 0.05 作为临界概率水平。然后将数据随机分为两部分,三分之二的数据用于估算可消化总营养素,剩余部分用于验证估算的可消化总营养素,并进行多元线性回归分析。牧草中的总可消化营养素与醚提取物、酸性洗涤木质素和非纤维碳水化合物呈负相关(P<0.01),但与粗蛋白(P<0.01)、灰分、中性洗涤纤维和酸性洗涤纤维呈正相关。饲料中的总可消化营养素与 NFC 呈负相关(P<0.01),但与中性洗涤纤维(P<0.01)、酸性洗涤木质素(P<0.01)、醚提取物(P<0.01)、粗蛋白(P<0.01)、灰分和酸性洗涤纤维(P<0.01)呈正相关。结果表明,根据化学成分可以准确地估算出总可消化营养成分的含量。关键词:可消化总养分;饲草;精料;饲料分析。
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引用次数: 0
Evaluation of the growth efficiency of some citrus rootstocks for spraying melatonin growth regulator under salt stress conditions 评估盐胁迫条件下喷洒褪黑激素生长调节剂的一些柑橘砧木的生长效率
Pub Date : 2023-12-15 DOI: 10.21931/rb/2023.08.04.54
Muntadher Al-Mousawi, H. Al-Tamimi
This research was conducted to determine the impact of spraying the increased regulator melatonin on the tolerance of some citrus roots to salt stress. The results showed that the Sour Orange root was significantly superior to the rest of the citrus rootstocks and recorded the highest increase in the rate (Height, diameter, quantity, and area of leaves for the plant), while the root Volkamer lemon was significantly the best by recording the highest rate of arid mass of the root system and plant life. Furthermore, irrigation with electrical connection water (1.7 sec.m-1) led to obtaining the highest values ​​for vegetative plant girth growth characteristics (plant girth, stem diameter, number of leaves, leaf area, dry weight of the vegetative and root system and root length). Moreover, treatment with the growth regulator melatonin at a concentration of (100 mg.L-1) showed the most significant percentage in the trait (plant height, diameter of the stem, number of leaves, size of the leaves, and dry weight of the vegetative both root system and root length). As well as the binary and triple interactions between these study factors led to a clear significant superiority in the studied traits compared to the comparison treatment, as the triple interaction treatment (Sour Orange root + melatonin at 100 mg. l-1 as the concentration+ salinity of irrigation water at a concentration of 1.7 decimens.m-1) was the most significant treatment by giving the highest increase in the rate of vegetative characteristics. Finally, the treatment (rootstocks Volkamer lemon + melatonin at 100 mg.l-1 as the concentration + salinity of irrigation water at a concentration of 1.7 dm. m-1) recorded the highest rate of length and weight of the root when it is a dry system.Keywords: melatonin; rootstocks; salinity
本研究旨在确定喷洒增加调节剂褪黑激素对一些柑橘根系耐盐胁迫的影响。结果表明,酸橙根明显优于其他柑橘砧木,其根系(植株高度、直径、叶片数量和面积)的增长率最高,而沃尔卡默柠檬根的根系和植株寿命的干旱率最高,因此明显优于其他柑橘砧木。此外,用电连接水(1.7 秒/米-1)灌溉可获得最高的无性系植物生长特征值(植株周长、茎直径、叶片数量、叶面积、无性系和根系干重以及根长)。此外,使用浓度为(100 mg.L-1)的生长调节剂褪黑激素处理,在性状(植株高度、茎杆直径、叶片数量、叶片面积、无性系和根系干重以及根长)上显示出最显著的百分比。这些研究因子之间的二重交互作用和三重交互作用导致所研究的性状明显优于对比处理,因为三重交互作用处理(酸橙根+浓度为 100 毫克/升-1 的褪黑激素+浓度为 1.7 分米-1 的灌溉水盐度)是最显著的处理,其无性系特征的增加率最高。最后,处理(砧木沃尔卡默柠檬+浓度为 100 毫克/升的褪黑激素+浓度为 1.7 分米/米的灌溉水盐度)在干燥系统中记录了最高的根长和根重增加率。
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引用次数: 0
Estudio de la cinética de secado del maíz suave (Zea mays L) variedad Guagal (INIAP 111) 软玉米(Zea mays L)品种瓜加尔(INIAP 111)的干燥动力学研究
Pub Date : 2023-12-15 DOI: 10.21931/rb/2023.08.04.5
Roxana García-Culqui, Lady Guevara-Narváez, Franz Verdezoto-Mendoza, Juan Gaibor-Chávez
El objetivo fue determinar la cinética de secado del maíz (Zea mays L), variedad Guagal mejorado. Se realizaron con tres muestras de materia prima a temperaturas no controladas entre 60 °C – 80 °C durante 12 horas, seguido por el proceso de cinética de secado en una estufa a 104°C durante 24 horas. Las muestras iniciaron con pesos de 8.09 g; 10.02 g; 11.16 g respectivamente con una humedad inicial de 22.13 % y se obtuvo una humedad final de 0,53 %; 0,7 %; 0,61 %. Las variables medidas incluyeron la humedad en base seca, total y en equilibrio, el flujo de calor, la cantidad y la eficiencia de calor, y la velocidad de secado. Se determinó que la velocidad de secado a mayores temperaturas favorece a la transferencia de masa y energía. Se estableció que el modelo de Henderson y Pabis fue el que mejor se adaptó a los datos experimentales obtenidos en el proceso de cinética de secado a 104°C por 24 horas R2 = 99,798%; mientras que el modelo de Page fue el que mejor se adaptó a los datos obtenidos durante la deshidratación a 60-80°C durante 12 horas R2 = 99,881 %. Esto sugiere que se pueden obtener mejores resultados de secado y deshidratación con la variedad de maíz INIAP 111 Guagal mejorado si se considera el establecimiento de la temperatura adecuada y el tiempo de procesamiento. Palabras clave: Cinética, secado, maíz, modelo matemático, harina de maíz.
目的是确定玉米(Zea mays L)(改良 Guagal 品种)的干燥动力学。在 60 °C - 80 °C 的非受控温度下对三个原料样品进行了 12 小时的干燥,然后在 104°C 的烘箱中进行了 24 小时的干燥动力学过程。样品的初始重量分别为 8.09 克、10.02 克和 11.16 克,初始含水量为 22.13%,最终含水量分别为 0.53%、0.7% 和 0.61%。测量的变量包括干水分、总水分和平衡水分、热通量、热量和效率以及干燥速率。结果表明,较高温度下的干燥速率有利于质量和能量的传递。结果表明,亨德森和帕比斯模型最适合 104 摄氏度下 24 小时干燥动力学过程中获得的实验数据,R2 = 99.798%;而佩奇模型最适合 60-80 摄氏度下 12 小时脱水过程中获得的数据,R2 = 99.881%。这表明,如果考虑到适当的温度设置和加工时间,INIAP 111 Guagal 玉米改良品种可以获得更好的干燥和脱水效果。 关键词:动力学、干燥、玉米、数学模型、玉米粉。
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Bionatura
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