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Livia Alm 《Journal of the science of food and agriculture》1981,32(12):1247-1253
The nutritional quality of non-fermented and fermented milk products was evaluated using a rat bioassay in two feeding experiments, with casein as the control. Small changes in the biological value (BV) of proteins after fermentation were recorded except in cases of bifidus milk and yoghurt where an increase and a decrease, respectively, in BV were observed. The weight increases in the yoghurt and the bifidus groups were lower than in the other groups. It is concluded that fermentation alters the BV of milk proteins very slightly. Hence, fermented milk products should be acceptable from a nutritional standpoint to administer to malnourished patients. 相似文献
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玉米须多糖的提取及其对无蔗糖双歧酸奶品质的影响 总被引:6,自引:0,他引:6
提出了玉米须多糖对无蔗糖双歧酸奶品质的影响。通过正交试验优化了玉米须多糖的提取工艺条件,分析并验证了玉米须多糖能改进酸奶品质。 相似文献
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本文简要介绍了双歧生长因子的种类、性质和用途,着重论述了双歧生长因子(主要是低聚糖类)对老年保健的生理作用,并提出研究开发新型高效双歧生长因子和寡糖保健食品的内容和方向。 相似文献
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目的:为深度开发米糠资源,考察纳豆芽孢杆菌发酵的米糠提取物(supernatant of Bacillus natto-fermentedrice bran,SBRB) 的整肠作用。方法:米糠提取物与双歧杆菌的体外共培养试验;灌胃SBRB,检测小鼠肠道正常菌群的生长。结果:体外试验证明纳豆菌在严格厌氧环境不能促进双歧杆菌的生长。加入SBRB 与米糠水提液(aqueous extract of rice bran,ABRB)均能显著促进双歧杆菌的生长,提高比率分别为65.2% 和17.8%;SBRB 经过胃蛋白酶和胰蛋白酶消化后,仍有51.6% 的促生率。作为外源因子的SBRB 与AERB 中含有多种促生成分。动物实验结果表明,灌胃SBRB 能够显著促进以厌氧菌为优势菌群的小鼠肠道菌群的生长,抑制好氧菌的增殖,作用效果与微生态制剂培菲康相当;纳豆菌和发酵成分均对小鼠的肠道菌群具有调节作用,两者复合能发挥更强的功能。结论:SBRB 具有调整肠道菌群的功能,适于制成合生素制剂。 相似文献