为了研究更简便地测定食品中香兰素含量的方法,采用可见分光光度法测定麦片中香兰素的含量,其吸光度与香兰素含量呈正比,建立线性方程为y=2.8939x+0.009(r=0.9990),线性范围为0.0304~0.3652g/L,检出限为2.2206×10-2g/L,加标回收率为101.8%,RSD为0.44%。该方法重现性好、可行,对麦片进行测定,结果满意。
第 1期 曹玉廷 .一种 SFEP丙烯酸酯 聚合涂膜 的稳 定性 分析 SYNTHESIS OF A NEW SoAP-FREE PoLYACRYLATE-EMULSIoN AND ANALYSIS OF THE STABILITY OF ITS CoATING FILM CAO Yu—ting (Citemistry Department of Ningbo University,Ningbo 31521 1,China) Abstract: A new soap—free polymer(acrylate/methlacrylace) emulsion is prepared in this paper.The stability of their coating film has been analysed and determined in four respects