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大枣发酵醋酸饮料的研制 总被引:4,自引:0,他引:4
对大枣制汁条件进行了单因素试验,确定了制备枣汁的最佳工艺;通过正交试验得出合理的发酵工艺条件;经调配获得了营养丰富,且具预防感冒、消除疲劳、醒酒、降脂等保健功能的饮料。 相似文献
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Mycotoxins in South African traditionally brewed beers 总被引:1,自引:0,他引:1
Traditionally brewed alcoholic beverages are regularly consumed by most ethnic black South Africans. Maize and barley, both of which are used for producing locally brewed alcoholic beer, are frequently contaminated by mycotoxin-producing moulds. The study was undertaken to investigate whether these toxins are present in raw grains and the traditional beers imbibed by the local black African population. It was established that the raw ingredients (sorghum, sorghum malt grains, maize grits), commercially produced traditional beers (Utshwala and Utshwala special) and home-brewed beers (Umqombotha, Isiqatha, Imfulamfula) were contaminated by bacteria and fungi (both yeasts and moulds). The contaminating moulds were isolated and identified. The contaminated samples were analysed for aflatoxins B 1 , B 2 , G 1 and G 2 , zearalenone, citrinin, deoxynivalenol, and ochratoxin A using a multi-mycotoxin thin-layer chromatography screening method and the toxins were quantified by high-performance liquid chromatography. Grain samples were infected by Aspergillus flavus , A. alliaceus , A. clavatus , Penicillium spp., Rhizopus spp. and Mucor spp. Sorghum malt grain samples contained the toxin zearalenone. No mycotoxin-producing fungi were present in the fermented beers but two of six commercial beer samples contained aflatoxins (200 and 400 μgl -1 ) and 45% (13 of 29) of the home-brewed beers had zearalenone (range 2.6-426 μg l -1 ) and/or ochratoxin A (3-2340 μg l -1 ). 相似文献
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青稞营养型发酵饮料酒的试验与研究 总被引:1,自引:0,他引:1
利用发酵工程把青稞、枸杞和蜂蜜有效地结合起来,酿制成一种富有青稞香、蜂蜜香和枸杞果香的营养型发酵酒.成品酒中含有丰富的维生素C、氨基酸、人体易吸收的有效的微量成分,具有增强机体免疫力等保健作用. 相似文献
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由于高等教育扩招,给发酵工程专业毕业论文质量带来的影响,分析了提高发酵工程专业毕业论文质量的重要性,提出了保证发酵专业毕业论文质量的具体措施。 相似文献
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利用基因工程技术改造植物和动物可以提高食品的产量与质量,给社会带来巨大的经济效益,但其安全性问题也不容忽视。本文综述了基因工程技术在食品工业中的应用,就转基因食品的发展、安全性和发展前景作了探讨。 相似文献
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以食疗中药黄精、大宗水果甜橙为主要原料,筛选出干燥黄精块茎的最适取汁方法,采用正交试验研究了主要原辅材料不同配比对产品感观品质的影响,确定了黄精、甜橙汁、果葡糖浆和柠檬酸的最适用量,研制出营养丰富、风味独特的天然饮料。 相似文献
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基因工程技术在食品工业中的应用 总被引:3,自引:0,他引:3
0前言生物技术是个既古老又年轻的科学,它在食品工业中的应用可谓历史悠久,人类早在远古时代就利用微生物制酱、制醋、酿酒等,1857年,法国科学巴斯德发现了发酵过程是微生物作用的结果,此后相继出现了许多纯种微生物发酵工业,并形成了抗生素,氨基酸、有机酸、酶制剂、核酸及单细胞蛋白等发酵工业,人们将采用纯种微生物的发酵工艺称为现代生物技术。本世纪七十年代以来,由于DNA重组和转基因等一系列基因工程技术的建立,生物技术已成为当今发展最快、最活跃的高技术领域之一。近二十年来,基因工程技术,尤其是基因克隆和基… 相似文献