分光光度计法定量测定生乳中糊精的方法讨论OA
Discussion of Determination Method for Dextrin in Raw Milk with Spectrophotometer
生乳经过处理除去蛋白质、脂肪和可溶性糖后，用苯酚-硫酸溶液与提取出的糊精反应生成有色络合物，其颜色深浅与溶液中糊精的含量成正比，通过标准曲线可间接求出生乳中糊精含量。试验结果表明，该方法灵敏度高，精密度好，重复性试验的标准偏差为0.007，相对标准偏差为2.88%，对生乳掺假糊精的检测和监督具有指导性意义。
After removing the protein,fat,and soluble sugar in raw milk,the extracted dextrin reacted with phenol-sulfuric acid solution,and the color depth of generated complex was proportional to the concentration of dextrin in the solution,therefore the concentration of dextrin in raw milk could be calculated by the standard curve. The results showed that the developed method has high sensitivity and good precision,with the standard deviation of 0.007 and the relati…查看全部>>
徐萍;鲁莉
农业部乳品质量监督检验测试中心 哈尔滨青岛市疾病预防控制中心
生乳糊精定量测定
raw milkdextrinquantitative determination
《中国乳业》 2016 (7)
59-61,3
评论