Performance Evaluation of Direct Forced-Air Total Solids and Kjeldahl Total Nitrogen Methods: 1990 through 1995

Method performance study of the determination of total nitrogen in soy sauce by the Kjeldahl method.

The objective of this collaborative study was to evaluate the proposed method for determining the total nitrogen in soy sauce by the Kjeldahl method submitted to the Codex Alimentarius Commission for endorsement in accordance with the protocol for the design, conduct, and interpretation of method-performance studies. The digestive conditions of the proposed method are the addition of 10 mL of H...

A method for determining total nitrogen in Kjeldahl digestion solution using a centrifugal analyser

Evaluation of TRAP and FRAP Methods for Assessing Total Antioxidant Capacity of Rat Serum

Tayefi-Nasrabadi H1, Khodarahmi R2 1. Assistant Professor, Department of Biochemistry, Faculty of Veterinary Medicine, Tabriz University 2. Assistant Professor, Department of Biochemistry, Faculty of Medicine, Kermanshah University of Medical Sciences Abstract Background: Because of the difficulty in measuring each antioxidant component separately and the interactions among different...

A Simplified Ultra-micro Kjeldahl Method for the Estimation of Protein and Total Nitrogen in Fluid Samples. of Less Than

Determination of the total nitrogen content of hard, semihard, and processed cheese by the Kjeldahl method: collaborative study.

The objective of this collaborative study was to determine interlaboratory performance statistics for a modified and optimized version of AOAC Method 920.123 for the determination of the total nitrogen content of hard, semihard, and processed cheese by Kjeldahl analysis. Details included addressing the issues of material homogeneity, test portion size (1 g), quantitative transfer (weighing on t...