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Effect of Camel's Milk Processing on Orotic Acid Stability 驼奶加工对乳清酸稳定性的影响
Pub Date : 2024-07-21 DOI: 10.21608/jfds.2024.295141.1158
E. M. Abdeen
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引用次数: 0
Effects of Moringa oleifera Leaf and Seed Powder on the Quality and Viability of Probiotic Fermented Milk 辣木叶和种子粉对益生菌发酵乳的质量和活力的影响
Pub Date : 2024-07-06 DOI: 10.21608/jfds.2024.295997.1159
Eman Mohammed et al. Ebrahim
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引用次数: 0
Study of the Effect of Zinc Nanoparticles from Saffron Extract during Thermal Treatment of Soybean Oil 研究藏红花提取物中的锌纳米粒子对热处理大豆油的影响
Pub Date : 2024-07-06 DOI: 10.21608/jfds.2024.261433.1145
Eman I. Saafan
This work aimed to study the effect of nanoparticles of zinc oxide saffron extract and its effect as natural antioxidant. Transmission Electron Microscope (TEM) used as a method showed that a round shape of ZnO nanoparticles of medium size 15 to 50 nm. Results of bioactive compounds elucidated that content of total phenolic being 54.66±1.3 mg GAEgm in saffron ethanolic extract, while total flavonoids being 70.23 in the same one. Determination of phenolic compounds using HPLC obviously that nine compounds were detected. Safranal acid is the most plentiful one in saffron extract that was 220.11mg100gm, while hesperitin was the most flavonoid compound in the same extract was 87.51mgg. Using concentrations of 200 and 300 ppm of ZnO saffron ethanolic extract was added to soybean oil and compared its effect with TBHQ as a synthetic antioxidant. Acquired data for stability of oxidation by rancimat method noticed that addressed sample with Zinc oxide nanoparticles saffron extract using concentration 300ppm have the highest presentation stability time (18months) of storge compared with other simples. Heating process effect of treated soybean oil by ZnO saffron ethanolic extract using concentration 300 ppm was chronicled the lower most ethics of hydrolysis, oxidation and rancidity limitation subsequently twelve hours thermal process. Thus, addition of zinc nanoparticles saffron extract as an alternative to synthetic antioxidants
这项工作旨在研究纳米氧化锌藏红花提取物的效果及其作为天然抗氧化剂的作用。透射电子显微镜(TEM)显示,氧化锌纳米粒子呈圆形,大小为 15 至 50 纳米。生物活性化合物的检测结果表明,藏红花乙醇提取物中总酚类的含量为 54.66±1.3 mg GAE/gm,总黄酮的含量为 70.23 mg GAE/gm。用高效液相色谱法测定酚类化合物,结果表明检测到 9 种化合物。藏红花提取物中含量最多的是山奈酸,为 220.11mg/100gm,而橙皮甙是同一提取物中含量最多的类黄酮化合物,为 87.51mg/g。将浓度为 200 和 300 ppm 的氧化锌藏红花乙醇提取物添加到大豆油中,并将其效果与作为合成抗氧化剂的 TBHQ 进行比较。通过 rancimat 法获得的氧化稳定性数据表明,与其他物质相比,使用浓度为 300ppm 的纳米氧化锌藏红花提取物处理的样品具有最高的稳定性(18 个月)。使用浓度为 300ppm 的氧化锌藏红花乙醇提取物处理大豆油的加热过程效果表明,在 12 小时的热处理过程中,水解、氧化和酸败限制的道德水平最高。因此,添加纳米锌藏红花提取物可替代合成抗氧化剂。
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引用次数: 0
Physicochemical and Microbiological Properties of Stirred Bio-Yoghurt Manufactured from Sheep Milk 用绵羊奶制造的搅拌型生物酸奶的理化和微生物特性
Pub Date : 2024-03-19 DOI: 10.21608/jfds.2024.270302.1153
amira abass, Kh. H. Salman, M. A. Awad-Allah, Ibtesam Mowafi
Sheep milk is considered an important nutritional and health-promoting food source due to its high protein content and minerals. The current study aimed to ascertain the impact of probiotic bacteria ( Bifidobacterium longum ) on the physicochemical properties, bacterial evaluation and sensory assessment of stirred bio-yoghurt made from sheep milk. Stirred bio-yoghurt was prepared with various inoculation levels of Bifi. longum (3, 6, 9 and 12% for T1, T2, T3 and T4; respectively). According to the study's findings, the moisture content of all treatments steadily declined with increasing of storage periods at 4±1°C up to 15 days. The control samples had higher moisture than that of stirred bio-yoghurt made with various amounts of Bifi. longum . While the fresh samples had lower moisture that that of other treatments. The fat content of stirred bio-yoghurt as well as control samples found to decrease and significantly differences with increasing the storage periods at refrigerator temperature up to 15 days. In addition, the incorporation of Bifi. longum significantly raised protein and ash contents of stirred bio-yoghurt than that of control samples, and their contents were increase and significantly differences with increasing the storage periods at refrigerator temperature up to 15 days. There were astatically significant change in the syneresis of all moduli (treatment and control sample). Stirred bio-yoghurt treatments and the control samples had no coliform as well as mould and yeast levels in all treatments.
绵羊奶因其蛋白质和矿物质含量高而被认为是一种重要的营养和促进健康的食物来源。本研究旨在确定益生菌(长双歧杆菌)对绵羊奶制成的搅拌生物酸奶的理化特性、细菌评价和感官评估的影响。在制备搅拌生物酸奶时,长双歧杆菌的接种量各不相同(T1、T2、T3 和 T4 的接种量分别为 3%、6%、9% 和 12%)。研究结果表明,随着在 4±1°C 下贮藏时间的延长,所有处理的水分含量都在稳步下降,直至 15 天。对照组样品的水分高于用不同量的长叶双歧杆菌制成的搅拌生物酸奶。而新鲜样品的水分低于其他处理的样品。经搅拌的生物酸奶和对照样品的脂肪含量随着在冰箱温度下储存时间的延长而降低,且差异显著,最长可达 15 天。此外,与对照样品相比,添加了长叶双歧杆菌的搅拌型生物酸奶的蛋白质和灰分含量明显提高,而且随着冷藏温度下贮藏时间的延长,蛋白质和灰分含量也随之增加,直至 15 天,且差异显著。所有模量(处理样品和对照样品)的收缩率都有明显变化。搅拌生物酸奶处理和对照样品在所有处理中都没有大肠菌群以及霉菌和酵母含量。
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引用次数: 0
Quality of Nonfat Yoghurt Made from Skim Milk Powder Reconstituted in Aqueous Extract of Moringa Leaves 用脱脂奶粉冲调和辣木叶水提取物制成的脱脂酸奶的质量
Pub Date : 2024-03-12 DOI: 10.21608/jfds.2024.268384.1152
M. A. Ghanimah, M. Abouelnaga, A. M. Asar, Cross Mark
Moringa leaves have well-known health and nutritional benefits. This work aimed to study the properties of nonfat yoghurt prepared from skim milk powder reconstituted in an aqueous extract of Moringa leaves (MLE). Three nonfat yoghurt treatments were manufactured from three concentrations of MLE 0.5, 1 and 1.5%, which were used to reconstitute skim milk powder (10%). The results showed that, compared with the control, MLE had no effect on the pH value, acidity% or protein content, but increased the TS, ash and mineral contents (Ca, K, Mg and Fe) in nonfat yoghurt treatments. Nonfat yoghurt made with MLE showed higher antioxidant activity (%) than the control. The curd tension and viscosity of the control were higher than those of the applied treatments, but the nonfat yoghurt with MLE exhibited the lowest syneresis compared with the control. Nonfat yoghurt made with MLE at concentrations of 0.5 and 1% was organoleptically acceptable, but treatment with 1.5% MLE had the lowest sensory properties.
辣木叶具有众所周知的健康和营养功效。这项工作旨在研究脱脂奶粉在辣木树叶水提取物(MLE)中重组后制备的脱脂酸奶的特性。用 0.5%、1% 和 1.5% 三种浓度的 MLE 重构脱脂奶粉(10%),制备了三种脱脂酸奶。结果表明,与对照组相比,MLE 对酸奶的 pH 值、酸度%或蛋白质含量没有影响,但增加了脱脂酸奶中的 TS、灰分和矿物质含量(钙、钾、镁和铁)。用 MLE 制作的脱脂酸奶的抗氧化活性(%)高于对照组。对照组的凝乳张力和粘度均高于所使用的处理方法,但与对照组相比,使用 MLE 的脱脂酸奶的凝乳滞后现象最少。用浓度为 0.5%和 1%的 MLE 制作的脱脂酸奶在感官上是可以接受的,但用浓度为 1.5% 的 MLE 制作的酸奶感官特性最低。
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引用次数: 0
Production of Gluten-Free Biscuits for Celiac Patients Using Yellow Corn Flour, Sweet Lupine and Sweet Potato Powders 使用黄玉米粉、甜羽扇豆粉和红薯粉为乳糜泻患者制作无麸质饼干
Pub Date : 2024-02-22 DOI: 10.21608/jfds.2024.260732.1144
M. M. Rabie, G. Ghoneim, M. Youssif, M. A. A. El-Maaty, Cross Mark
Gluten-free corn biscuits were prepared from yellow corn flour and partially replaced by various levels (10, 20 and 30%) of sweet lupine and sweet potato powders. The proximate composition, minerals content, physical and sensory attributes of the prepared gluten-free biscuits was evaluated. The obtained data observed that, the water absorption and dough stability of yellow corn flour was gradually increased as the percentage of replacement with sweet lupine and sweet potato powders increased. On contrast, dough weakening was gradually decreased as the substitution level increased. Also, the blends of sweet potato and yellow corn flour had the most significant set-back values. On contrast, sweet lupine powder had the lower set-back values. The replacement of yellow corn flour with sweet lupine powder caused gradually increase in both of biscuits moisture, ash, protein, lipids, crude fibers and minerals levels as the level of replacement increased. Meanwhile, total carbohydrates content was gradually decreased as the level of replacement increased. Gradual increase in both of biscuits weight and spread ratio and gradual decrease in biscuits specific volume were observed by raising the proportion of replacement with sweet lupine and sweet potato powders in compare to control sample. Sensory results showed the levels of substitution with 20% sweet lupine and 10% sweet potato powders were the most preferable. Due to the lack of gluten, these studied biscuits can be suitable for celiac disease patients.
用黄色玉米粉制备无麸质玉米饼干,并用不同含量(10%、20% 和 30%)的甜羽扇豆粉和甘薯粉部分替代。对制备的无麸质饼干的近似成分、矿物质含量、物理和感官属性进行了评估。所得数据表明,随着甜羽扇豆粉和红薯粉替代比例的增加,黄玉米粉的吸水性和面团稳定性逐渐提高。相反,面团的弱化程度随着替代比例的增加而逐渐降低。此外,甘薯粉和黄玉米粉的混合物具有最显著的回落值。相反,甜羽扇豆粉的回弹值较低。用甜羽扇豆粉替代黄玉米粉会使饼干的水分、灰分、蛋白质、脂类、粗纤维和矿物质含量随着替代水平的增加而逐渐增加。同时,总碳水化合物含量随着替代量的增加而逐渐降低。与对照样品相比,提高甜羽扇豆粉和红薯粉的替代比例后,饼干的重量和铺展率均逐渐增加,饼干的容积逐渐减少。感官结果表明,用 20% 的甜羽扇豆粉和 10% 的甘薯粉替代的饼干最受欢迎。由于不含麸质,所研究的这些饼干适合乳糜泻患者食用。
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引用次数: 0
Composite Alternative Milk II: Evaluation of Physical Properties and Microbial Count of the Composite Alternative Milk 复合替代奶 II:评估复合替代奶的物理特性和微生物数量
Pub Date : 2024-02-15 DOI: 10.21608/jfds.2024.260521.1147
Nahed Yousef, Manal H. Abd-Elkader, Eman El-Bialy
The aim of this research is to prepare acceptable casein free and lactose free high quality alternative milk which were previously studied by the same authors. Coconut milk (A), potato flour milk (B), white corn milk (E), Tiger nut milk (F), sorghum milk (G), dry bean milk (H) sesame milk (I), and cantaloupe seeds milk (J) were used to make five composite alternative milks (AFG, AHJ, ABI, JBI and FBE) as shown in part I. Composite alternative milks were evaluated by physical, microbiological and sensory during storage period. Composite alternative milks had sensory qualities that were acceptable, with good nutritional content, and high quality in flavor, color, mouth feel, taste, and texture. Approximately, during storage, all samples of composite alternative milk's sensory qualities and total bacterial count were unaffected. Acidity was increased by increasing of storage period in samples with 50% tigernut milk or 50% cantaloupe seed milk. Sedimentation stability was high in samples with 50% tigernut milk or cantaloupe seed milk. The highest viscosity at 10 rpm found in sample with 50% coconut milk, 25% potato flour milk and 25% sesame milk. Samples containing 50% coconut milk have the best color, taste, flavor, texture and mouth feel.
本研究的目的是制备可接受的不含酪蛋白和乳糖的优质替代奶,这些替代奶之前由同一作者进行过研究。椰子奶(A)、马铃薯粉奶(B)、白玉米奶(E)、虎坚果奶(F)、高粱奶(G)、干豆奶(H)、芝麻奶(I)和哈密瓜种子奶(J)被用来制作五种复合替代奶(AFG、AHJ、ABI、JBI 和 FBE),如第一部分所示。复合替代奶的感官质量可以接受,营养成分良好,风味、颜色、口感、味道和质地都很优质。大约在贮藏期间,所有复合替代奶样品的感官质量和细菌总数都没有受到影响。含 50%虎耳草乳或 50%哈密瓜种子乳的样品的酸度会随着储存时间的延长而增加。含 50% 虎耳草乳或哈密瓜种子乳的样品的沉淀稳定性较高。含 50%椰奶、25%马铃薯粉奶和 25%芝麻奶的样品在 10 转/分时的粘度最高。含 50%椰奶的样品色泽、味道、风味、质地和口感最佳。
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引用次数: 0
The Effect of Substituted Flaxseed Flour on the Rheological, Chemical and Sensorial Properties of Toast Bread 替代亚麻籽面粉对吐司面包流变学、化学和感官特性的影响
Pub Date : 2024-02-11 DOI: 10.21608/jfds.2024.261909.1148
Rahma M. El-Sayed, M. M. Rabie, R. El-gammal, Cross Mark
This paper pointed to study the impact of flaxseed flour partial replacement with wheat flour in toast bread preparation. The chemical composition, bioactive compounds and antioxidant activity (DPPH) of wheat and flaxseeds flour were evaluated. Four toast bread samples were prepared using 10, 20, 30, and 100% flaxseed flour replaced with the wheat flour and the sensory evaluation of prepared toast bread samples was studied to choose the most acceptable bread sample to customers. The chemical analysis results showed that, compared to wheat flour (72% extract), flaxseed flour had a low carbohydrate content, no gluten, in addition to its high protein and fiber content, which recorded 19.87 and 13.61%, respectively. It is known that flaxseed flour is one of the best plant sources of antioxidant chemicals. Therefore, the results recorded the highest value of total phenolic content, which amounted to 0.364 mg/g, total flavonoids 6.667 mg/g, and antioxidant activity (DPPH) 86.131% compared to wheat flour. The control toast bread sample had no significant difference with other sample contained 10% flaxseeds flour in crust color, crumb color, odor, taste and overall acceptability values. Also, the results of testing the dough's rheological characteristics showed that they were affected by the addition of flaxseed flour. Moreover, replacing 10% of wheat flour with flaxseed flour led to an increase in water absorption and dough development time, while stability and dough energy values decreased with the addition of flaxseed flour.
本文旨在研究亚麻籽粉部分替代小麦粉对吐司面包制作的影响。对小麦和亚麻籽面粉的化学成分、生物活性化合物和抗氧化活性(DPPH)进行了评估。研究人员用 10%、20%、30% 和 100% 的亚麻籽面粉替代小麦粉制备了四种吐司面包样品,并对制备的吐司面包样品进行了感官评价,以选出最能为顾客接受的面包样品。化学分析结果显示,与小麦粉(72% 的提取物)相比,亚麻籽粉的碳水化合物含量低,不含面筋,蛋白质和纤维含量高,分别为 19.87% 和 13.61%。众所周知,亚麻籽粉是抗氧化化学物质的最佳植物来源之一。因此,与小麦粉相比,亚麻籽粉的总酚类含量最高,达到 0.364 毫克/克,总黄酮类含量为 6.667 毫克/克,抗氧化活性(DPPH)为 86.131%。对照组吐司面包样品与其他含 10%亚麻籽面粉的样品在面包皮颜色、面包屑颜色、气味、口感和总体可接受性值方面没有明显差异。此外,面团流变特性的测试结果表明,亚麻籽面粉的添加也会影响面团的流变特性。此外,用亚麻籽粉替代 10%的小麦粉会增加吸水率和面团扩展时间,而稳定性和面团能量值则会随着亚麻籽粉的添加而降低。
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引用次数: 0
Using Psyllium Husk Powder as Fat Replacer and Stabilizer to Improve Low Fat Ice Cream Properties 使用车前子壳粉作为脂肪替代物和稳定剂来改善低脂冰淇淋的特性
Pub Date : 2024-01-01 DOI: 10.21608/jfds.2024.255807.1142
safaa Mokbel, K. Blassy, A. Abdeldaiem
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引用次数: 0
Effect of Adding β-cyclodextrin and Cinnamon Oil on the Quality Characteristics of Goat's Milk-Based Ice Cream 添加β-环糊精和肉桂油对山羊乳基冰淇淋质量特性的影响
Pub Date : 2023-12-13 DOI: 10.21608/jfds.2023.248633.1138
N. Alosily, M. Hassan, H. Barakat, A. Al-Hassan, Samar Aly, Cross Mark
This study aimed to create ice cream from goat's milk using β-cyclodextrin (β-CD) or cinnamon essential oil (CEO) to mask the unpleasant taste of goat milk. The ice cream was made with different amounts of β-CD (0.25%), 0.50%, and 1.00%, and cinnamon essential oil (0.02%, 0.03%, and 0.04%), along with a control sample without additives (TC). The resulting ice cream was analyzed for chemical, rheological, nutritional, and organoleptic properties. Results showed that β-CD-ice creams had an increased concentration of total solids, decreased moisture content, increased ash, crude protein, and carbohydrates. CEO-ice had higher melting resistance and lower overrun percentage. The sensory evaluation indicated that the best addition rate for beta-cyclodextrin was 1.00%, and the best addition rate for cinnamon oil was 0.02%. These additions effectively mask the fatty acids that cause the goat flavor. Ice β3 and Ice C1 received high acceptance. This approach allows for the preservation of goat milk's benefits while effectively masking its strong flavor, resulting in a distinct and enjoyable ice cream with improved sensory acceptance.
本研究旨在使用β-环糊精(β-CD)或肉桂精油(CEO)来掩盖山羊奶的难闻味道,从而用山羊奶制作冰淇淋。在制作冰淇淋时,添加了不同量的 β-CD(0.25%)、0.50% 和 1.00%,以及肉桂精油(0.02%、0.03% 和 0.04%),还有不含添加剂的对照样品(TC)。对制成的冰淇淋进行了化学、流变、营养和感官特性分析。结果表明,β-CD 冰淇淋的总固体浓度增加,水分含量降低,灰分、粗蛋白和碳水化合物含量增加。CEO 冰具有更高的耐熔性和更低的溢出率。感官评估表明,β-环糊精的最佳添加率为 1.00%,肉桂油的最佳添加率为 0.02%。这些添加物有效地掩盖了导致山羊味道的脂肪酸。Ice β3和Ice C1获得了很高的认可度。这种方法既保留了山羊奶的优点,又有效地掩盖了其浓烈的味道,从而生产出独特而美味的冰淇淋,并提高了感官接受度。
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引用次数: 0
期刊
Journal of Food and Dairy Sciences
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