摘要
脱脂奶粉与浓硫酸、硫酸铜、硫酸钾一同加热硝化,反应生成(NH4)2SO4,其在碱性条件下蒸馏,释放出NH3,用硼酸吸收后,再以盐酸标准溶液滴定,计算出蛋白质量。
Defatted milk powder was heated and nitrified together with thick sulfuric acid, copper sulfate and potassium sulfate to give （NH4）2SO4, which was distilled under the alkaline condition to release HN3, which was in turn absorbed with boric acid and then titrated with hydrochloric acid standard solution to give the contents of proteins through calculation.
出处
《饮料工业》
2006年第2期42-43,共2页
Beverage Industry
关键词
凯氏定氮法
蛋白质
消化
蒸馏
Micro-Kjeldahl
protein
digestion
distillation
