| 粗蛋白质测定仪测奶制品蛋白质比较分析 |
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| 引用本文： | 陈红云,季守莲,宋正蕊. 粗蛋白质测定仪测奶制品蛋白质比较分析[J]. 福建农林大学学报(哲学社会科学版), 2011, 0(5): 33-35 |
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| 作者姓名： | 陈红云 季守莲 宋正蕊 |
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| 作者单位： | 大理学院公共卫生学院; |
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| 摘 要： | 目的:预期掌握目前部分大理产奶制品中蛋白质含量以及非蛋白质氮的含量情况,并与外包装指示含量进行比较与奶制品是否一致。方法:粗蛋白测定法,根据微量凯氏定氮法的原理,测定奶制品中总凝固沉淀物重量,及奶制品中非沉淀物经三氯乙酸处理后取沉淀再采用沉淀重量法测定蛋白质含量并与国家规定标准(简称"国标")进行比较。结果:将调味牛奶、酸牛奶、纯牛奶、奶粉中总含氮物质与真蛋白质的含量进行比较,差异没有统计学意义,蛋白质含量与外包装上标注的蛋白质含量接近一致,蛋白质含量均达到国标以上。结论:目前部分大理产调味牛奶、酸牛奶、纯牛奶、奶粉中不含有非食用氮物质,蛋白质含量与外包装上标注的蛋白质含量接近一致,所测量的部分大理产奶制品的蛋白质含量符合国家奶制品蛋白质含量标准。
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| 关 键 词： | 奶制品 蛋白质 含量 测定 分析 |
Determination of protein content in analysis Part of products the Dali milk |
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| Hong-yun CHEN,Shou-lian Ji,Zheng-rui SONG. Determination of protein content in analysis Part of products the Dali milk[J]. Journal of Fujian Agriculture and Forestry University, 2011, 0(5): 33-35 |
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| Authors: | Hong-yun CHEN Shou-lian Ji Zheng-rui SONG |
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| Affiliation: | Hong-yun CHEN,Shou-lian Ji,Zheng-rui SONG(School of public health of Dali University,Dali 671000) |
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| Abstract: | Objective:Master and non protein nitrogen content the expected part of Dali milk protein content of products,and packaging instructions compare the content of dairy products and consistency.Methods:According to the micro Kjeldahl determination principle,crude protein determination method,in dairy products and total coagulation precipitate weight,and milk products of sediment by trichloroacetic acid treatment and precipitation with precipitat-ed gravimetric method for the determination of protein content and... |
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| Keywords: | dairy products protein Determination of content analysis |
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