原料乳蛋白质含量及酸度多功能快速检验试剂盒的研制

摘要

将原料乳蛋白质含量测定技术和酸度测定技术试剂盒化。采用甲醛滴定法测定原料乳蛋白质含量、酸碱滴定法测定原料乳酸度，确定试剂盒的组分，并对试剂盒的符合率、重复性、稳定性等进行研究。该试剂盒由4种试剂组成，与凯氏定氮法和酸碱滴定法的符合率为100%，重复性良好，密封干燥处保存540d各项性能仍然很好。该试剂盒既可同时检测各种原料乳蛋白质含量和酸度，也可检测各种消毒乳和酸牛乳的蛋白质含量。%In this study, an integrative array kit for rapid simultaneous determination of protein content and acidity in raw milk was developed based on formaldehyde titration and acid-base titration. The kit was composed of 4 regents. The results obtained with it, highly stable, were completely consistent with those obtained by the Kjeldahl method and acid-base titration. After 540 d of sealed dry storage, its performance remained good. This kit may be also available for the determination of protein content in sterilized milk and yogurt.