The methodological study of biuret protein assay;

The pI of the protein is determined by biuret method.

The protein content of 10 rice samples were determined by Kjeldahl determination method and biuret reaction analytical method separately.

The synthetic method of diacylurea was investigated .

Comparative molecular field analysis (CoMFA) and comparative molecular similarity index analysis (CoMSIA) were applied to the study of the three-dimensional quantitative structure-activity rela-tionship (3D-QSAR) on 27 novel diacylurea derivatives containing a furan moiety.

Results Total protein concentration decreased with fluid biuret method when high concentration bilirubin in serum, results were significant.

In this experiment, the content of protein was assayed by biuret method and Kjeldahl determination.

Objective For conquering the interference of lipid turbidity,jaundice and hemolysis,changed simple reagent of biuret to double reagent (the method).

The concentrations of protein of milk, yogurt, and soybean milk are determined by the methods of Kjeldahl, UV spectrophotometry, Biuret reaction and Coomassie brilliant blue, and the various methods are compared and summarized from the results in this paper.

With the hydrolytic agent of citric acid,the effect of different hydrolyzed time,temperature and pH on the gelatin hydrolyzing degree and GMS was studied by the method of biuret.