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Rapid deter mination of protein in soybean meals
Author(s) -
Deacon Benjamin D.
Publication year - 1972
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02609382
Subject(s) - biuret test , kjeldahl method , sodium hydroxide , isopropyl alcohol , soybean meal , chemistry , absorbance , potassium hydroxide , food science , chromatography , formaldehyde , biochemistry , organic chemistry , urea , nitrogen , raw material
Protein content of soybean meal is determined by a modified biuret method. Samples are stirred with 0.5N sodium hydroxide containing normal or isopropyl alcohol and copper hydroxide at 70 C. Protein is determined from the absorbance of the filtered solution at 550 nm. Satisfactory correlation with the standard Kjeldahl method was obtained.