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The Effect of Alpha-amylase and Ascorbic Acid as Improvers on pan Bread Quality α -淀粉酶和抗坏血酸对平底面包品质的影响
Pub Date : 1900-01-01 DOI: 10.36632/mejas/2019.9.4.7
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引用次数: 1
Comparative Evaluation of Dentinal Microcracks Formation Caused by WaveOneGold, Protaper Gold and Manual Files 波波金、Protaper金、手工锉对牙本质微裂纹形成的比较评价
Pub Date : 1900-01-01 DOI: 10.36632/mejas/2020.10.3.44
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引用次数: 0
Miswak (Salvadora persica) Roots as Antimicrobial and a Potential bioactivecomponent 米沙瓦根作为抗菌和潜在的生物活性成分
Pub Date : 1900-01-01 DOI: 10.36632/mejas/2020.10.1.7
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引用次数: 3
Supplementary Applications of Phosphorus to Improve Yield and Fruit Quality of 'LeConte' Pear Trees under Calcareous Soil Conditions 钙化土壤条件下补磷提高“LeConte”梨树产量和果实品质的研究
Pub Date : 1900-01-01 DOI: 10.36632/mejas/2021.11.4.80
E. El-Razek, M. A. El-Migeed, N. Abdel-Hamid
Phosphorus (P) deficiency is one of the major problems in agricultural soils for crop production around the world. Mono ammonium phosphate (MAP) as foliar application used an effective tool to enhance nutritional status of fruit trees not only overcome leaf p deficiency but also improve flowering, increase yield and enhance fruit quality. However, use of bio fertilizers such as phosphorus solubilizing bacteria (PSB) proved to friendly environmentally and economical way for increasing P availability and improving P use efficiency under P deficiency conditions. Consequently, the aim of the present trail was to study the effects of MAP at 1% foliar application and/or soil application of phosphorus solubilizing bacteria (PSB) solely or in combination as supplementary P doses (beside H3PO4 common P fertigated source) under calcareous soil conditions on full bloom time, flowering %, yield (kg/tree) and fruit quality not only fruit physical properties i.e. fruit weight, length (L) and circumference (C), shape index (L/C) and fruit firmness but also fruit chemical components via TSS%, acidity%, and TSS/acid ratio as well as nutrient status of macro & micro leaf contents (N,P,K, Fe, Zn and Mn) of "Le Conte" pear trees. The experiment was carried out during the two successive seasons on 12 years old 'Le Conte" pear trees budded on betulifolia rootstocks (Pyrus betulifolia) grown in calcareous soil under drip irrigation system from Nile river source in a private orchid at Km 80 Alex-Cairo desert Road, El-Nubaria district, El-Behaira, Egypt. All trees received the standard horticultural practices & the experiment was designed in a complete randomized block and the treatments were as follows: (T1) control; H3PO4 common P fertigated source. (T2) T1 + MAP at 1 % as foliar application. (T3) T1 + Bacillus megatherium P solubilizing bacteria (PSB) as soil application. (T4) T2 +T3. The result showed that foliar MAP spray (T2) and PSB soil application (T3) independently improved all aforementioned parameters. However, both T2&T3 gave more or less similar result values and no significant differences were detected between them. In this respect, T2&T3 when applied together (T4) maximized to a grate extend enhancement in most studied parameters and increased yield (kg/tree) by about (167%) than the control. Improvement in leaf P nutritional status after MAP foliar spray to an adequate level (>0.3%) in the range of P and N fertilized plants as well as availability of P, Fe, Zn and Mn following soil PSB application improved nutritional status and help in better management of P fertilization in pear trees grown under calcareous soil condition. Generally, T4 (MAP + PSb) is recommended treatment since, it promotes effectively the nutrient status that achieved the shortest time to FBD, highest flowering %, yield and fruit of "Le-Conte" pear trees under calcareous soil conditions.
缺磷是影响作物生产的主要农业土壤问题之一。磷酸一铵(MAP)作为叶面施用,是改善果树营养状况的有效工具,不仅能克服叶片磷缺乏,而且能促进开花、增产、改善果实品质。然而,在缺磷条件下,利用生物肥料如溶磷菌(PSB)是一种既环保又经济的提高磷有效性和提高磷利用效率的途径。因此,本试验的目的是研究在钙质土壤条件下,在1%叶面施用MAP和/或土壤中单独或联合施用增磷细菌(PSB)作为补磷剂量(除H3PO4常见磷肥源外)对开花时间、开花%、产量(kg/棵)和果实品质的影响,而不仅仅是果实的物理特性,即果实重量、长度(L)和周长(C),通过TSS%、酸度%、TSS/酸比以及叶片宏观和微观含量(N、P、K、Fe、Zn和Mn)的营养状况,对“Le Conte”梨树的形状指数(L/C)和果实硬度以及果实化学成分进行了研究。试验在连续两个季节进行,在埃及El-Behaira El-Nubaria区alexa - cairo沙漠路Km 80的一个私人兰花中,在石灰质土壤中种植的白花砧木(Pyrus betulifolia)上发芽的12岁“Le Conte”梨树进行试验。所有树木均采用标准园艺方法,试验设计为完全随机区,处理如下:(T1)对照;H3PO4普通磷富源。(T2) T1 + MAP浓度为1%,叶面施用。(T3) T1 +嗜磷芽孢杆菌(PSB)作为土壤施用。(t4) t2 + t3。结果表明,叶面喷施MAP (T2)和施用PSB (T3)分别改善了上述各项参数。然而,T2&T3给出的结果值或多或少相似,两者之间没有显著差异。在这方面,当t2和t3同时施用(T4)时,在大多数研究参数中最大限度地提高了栅格扩展,产量(kg/tree)比对照提高了约(167%)。MAP叶面喷施后叶片磷营养状况改善至施磷、施氮范围内的适当水平(>0.3%),土壤施PSB后P、Fe、Zn、Mn的有效性改善了钙质土壤条件下梨树的营养状况,有助于更好地管理磷肥。一般推荐T4 (MAP + PSb)处理,因为它能有效促进钙质土壤条件下“Le-Conte”梨树的养分状态,实现最短的开花时间、最高的开花率、产量和果实。
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引用次数: 0
Essential oil content and composition of endemic Origanum syriacum ssp. sinaicumand it’s antimicrobial activity 土一枝挥发油含量及成分研究。和它的抗菌活性
Pub Date : 1900-01-01 DOI: 10.36632/mejas/2021.11.2.46
M. A. El-Motaleb, Asmaa R. Abd El-Hameid, W. Helmy, E. A. Ewais, M., S. Abdel-Hady
Numerous endemic plants grow naturally in Egypt especially in South Sinai Peninsula at Saint Katherine protectorate, one of those important plants is Origanum syriacum ssp. Sinaicum. Leaves of Origanum plants have an important role in both modern and folk medicine due to their secondary metabolites (Essential oil). The essential oil yield quantity of O. syriacum hydro-distilled through Clevenger apparatus was 6.5 %. The chemical compositions of the essential oil obtained by hydrodistillation were analyzed by gas chromatography–mass spectrometry (GC-MS). Major component of GC-MS analysis essential oil detected as oxygenated monoterpenes was carvacrol (95.37 %). The essential oil of O. syriacum leaves was found to possess antibacterial activity against Gram-positive as well as Gram-negative bacteria and antifungal activity against Candida albicans.
埃及特别是南西奈半岛的圣凯瑟琳保护区自然生长着许多特有植物,其中重要的植物之一是叙利亚Origanum syriacum ssp。Sinaicum。由于其次生代谢产物(精油),牛头草叶片在现代和民间医学中都具有重要作用。用Clevenger装置蒸馏法得到的香叶精油得率为6.5%。采用气相色谱-质谱联用(GC-MS)对加氢蒸馏所得精油的化学成分进行了分析。GC-MS分析精油中检出含氧单萜的主要成分为香芹酚(95.37%)。对革兰氏阳性菌和革兰氏阴性菌均有抑菌活性,对白色念珠菌也有抑菌活性。
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引用次数: 1
Nanoformulation of Cedarwood Oil and Its Fungicidal Activity against Fusarium solani and Alternaria tenuis 杉木油纳米配方及其对茄枯菌和线虫的杀真菌活性研究
Pub Date : 1900-01-01 DOI: 10.36632/mejas/2022.12.4.29
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引用次数: 0
Effects of Malaria on Rural Households’ Farm Labour in South-East, Nigeria 疟疾对尼日利亚东南部农村家庭农业劳动力的影响
Pub Date : 1900-01-01 DOI: 10.36632/mejas/2020.10.3.50
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引用次数: 0
Quinoa Crop as an Ingredient of Functional Foods and Its Utilization in BreadMaking 藜麦作为功能性食品原料及其在面包制作中的应用
Pub Date : 1900-01-01 DOI: 10.36632/mejas/2020.10.1.17
Essam E. Shalaby, M. H. Abdel-Al, Faten F. Abdel-salam
Special attention has been given in recent years to quinoa (Chenopodium quinoa Willd.) due to its high nutritional value and high-quality protein content. Quinoa seeds also contain various bioactive substances. Quinoa seed is rich source of phenolic compounds, particularly flavonoids, with health-promoting and/or disease preventing properties. Quinoa (Chenopodium quinoa Willd.) is a pseudocereal and is a native crop grows in many different regions and under various climate conditions. Quinoa has a broad genetic diversity, which allows it to adapt to various environments. (Jacobsen, 2003). The total phenolic content of quinoa seeds was studied and was 7.79 mg/ g and the flavonoid content in our investigated quinoa variety was 10.21 mg/ g. For bread making, seeds were soaked in tap water overnight for de-bittering. The soaking process stopped when there is no foam formed. Preparing of pan bread was done by using the following ingredients 100 g wheat flour, 1.5 g instant active dry yeast, 2.0 g salt, 2.0 g sugar, 3.0 g shortening and water. And substitute the wheat flour by ratios up to 20% Main results reveal that the loaf specific volume decreased with the substitution with quinoa flour. The panelists found the crumb more dense and compact in bread 20% of quinoa flour compared to the control and also crust colour, crumb colour, and taste attributes. Bread parameters such as loaf specific volume, weight, crust and sensory properties were affected by the incorporation of quinoa, especially at 20% of addition, whereas the nutritional quality was increased. These new bread products were still accepted by the panelists. Quinoa is gluten-free and easy to digest; quinoa flour can used in wheat-based and gluten-free baking. Quinoa grains are used to make flour, soups, breakfast cereals. In conclusion, whole quinoa flour could be a good replacement for wheat flour in bread formulations, increasing the product's nutritional value in terms of dietary fiber, minerals, proteins and healthy fats, with only a small depreciation in bread quality at 15% of flour substitution.
藜麦(Chenopodium quinoa wild .)由于其高营养价值和高质量的蛋白质含量,近年来受到特别关注。藜麦种子还含有多种生物活性物质。藜麦种子富含酚类化合物,特别是类黄酮,具有促进健康和/或预防疾病的特性。藜麦(Chenopodium Quinoa wild .)是一种假谷物,是一种生长在许多不同地区和各种气候条件下的本地作物。藜麦具有广泛的遗传多样性,这使它能够适应各种环境。(雅各布森,2003)。研究了藜麦种子总酚含量为7.79 mg/ g,类黄酮含量为10.21 mg/ g。制作面包时,将藜麦种子在自来水中浸泡过夜,进行除苦处理。当没有形成泡沫时,浸泡过程停止。用小麦粉100g、即食活性干酵母1.5 g、盐2.0 g、糖2.0 g、起酥油3.0 g、水配制平底面包。研究结果表明,用藜麦粉代替面粉后,面包的比体积减小。小组成员发现面包中的面包屑比对照组中藜麦面粉的20%更致密,更紧凑,面包皮颜色,面包屑颜色和味道属性也是如此。藜麦添加量为20%时,对面包的体积、重量、表皮和感官性能等指标均有影响,但对面包的营养品质有提高作用。这些新的面包产品仍然被小组成员所接受。藜麦不含麸质,易于消化;藜麦面粉可以用于小麦和无麸质烘焙。藜麦谷物被用来制作面粉、汤和早餐谷物。综上所述,全藜麦面粉可以很好地替代小麦面粉制作面包,增加了产品在膳食纤维、矿物质、蛋白质和健康脂肪方面的营养价值,而在面粉替代品的15%时,面包质量仅略有下降。
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引用次数: 0
In vitro Propagation of Phytoplasma-Free Strawberry Plants and MolecularCharacterization of the Pathogen 草莓无植浆体植株的离体繁殖及病原菌的分子特性研究
Pub Date : 1900-01-01 DOI: 10.36632/mejas/2020.10.3.43
S. Mokbel, A. Kheder
Multiplication of strawberry plants in tissue culture has advantages as reduced exposure to many insects and several various diseases. During 2019 growing season, strawberry (Fragaria x ananassa Duchesne cv. Festival) plants showing phyllody fruit symptoms, in which petals and sepals become leaf-like, were detected in planting fields in Ismailia governorate, Egypt. Phytoplasma associated with phyllody of fruit in strawberry plants was detected using phytoplasma universal primers, accurately identified at the molecular level, and the DNA sequence has been deposited in GenBank under accession number MT757900 with Isolate name SAMA. DNA from all symptomatic plants yielded PCR products of 1278 bp, whereas DNA from asymptomatic plants collected in the field yielded no products. The phylogenetic analysis of the 16S rDNA sequence of SAMA-isolate indicated that the 16S rDNA gene shared 100% identity with StrawbPhF-isolate classified in a group 16SrI (AY102275) that belonged to new subgroup R. Meristems (0.1-0.3 mm in size) were excised from the terminal and axillary buds of the strawberry-runners and then cultured on hormone-free medium. The two sizes (0.2 mm and 0.3 mm) of meristem had pronounced effects on the phytoplasma elimination (100%), and survival rates (66.6 % and 90%, respectively), but the smaller size of meristem had a deleterious effect to survival rate (0%). After approximately seven months and a half, rooted plantlets raised from meristem culture were confirmed for phytoplasma-free by a nested PCR assay. Therefore, the production of strawberry plantlets that needs no examination for their phytoplasma infection could be expected by applying the meristem culture method.
草莓植株在组织培养中繁殖的优点是减少了对许多昆虫和几种疾病的暴露。在2019年的生长季节,草莓(Fragaria x ananassa Duchesne cv。在埃及伊斯梅利亚省的种植地里发现了显示叶状果实症状(花瓣和萼片变成叶子状)的节日植物。利用植原体通用引物对草莓果实叶状学相关的植原体进行了检测,在分子水平上进行了准确的鉴定,DNA序列已存入GenBank,登录号为MT757900,分离物名称为SAMA。所有有症状植物的DNA都产生了1278 bp的PCR产物,而从田间收集的无症状植物的DNA没有产生产物。对sama分离物的16S rDNA序列进行系统发育分析,结果表明,该分离物的16S rDNA基因与隶属于新亚群r的16SrI (AY102275)群中的strawbphf分离物具有100%的同源性。0.2 mm和0.3 mm两种大小的分生组织对植原体消除率(100%)和成活率(66.6%和90%)均有显著影响,但较小大小的分生组织对成活率的影响较小(0%)。大约7个半月后,分生组织培养的有根植株通过巢式PCR检测证实无植物原体。因此,应用分生组织培养法可以生产出不需要进行植原体感染检测的草莓植株。
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引用次数: 1
Effect of Cobalt and Different Organic Fertilizers on Cowpea (Vigna unguiculata)production 钴与不同有机肥对豇豆生产的影响
Pub Date : 1900-01-01 DOI: 10.36632/mejas/2019.9.4.17
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引用次数: 0
期刊
Middle East Journal of Applied Sciences
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