Attachment of N-acetyl-L-methionine into whole soybeans and the nutritional consequences for the rat
1985
A:PS
Details
Title
Attachment of N-acetyl-L-methionine into whole soybeans and the nutritional consequences for the rat
Publication Date
1985
Call Number
A:PS
Summary
The reactive N-hydroxysuccinimide ester of N-acetyl-L-methionine was used to attach N-acetyl-L-methionine (NAM) into whole soybeans. The modified soybeans contained 70% more methionine than the original soybeans. The added methionine was presumably present in the modified soybeans as NAM covalently attached to protein amino groups or other nucleophilic groups or tightly adsorbed by some noncovalent linkage since it was not removed by exhaustive dialysis. Rat feeding experiments using 10% protein diets demonstrated that NAM in the modified soybeans was biologically available, although to a lesser extent than free DL-methionine added to unmodified soybeans. The unadjusted protein efficiency ratio (PER) value of modified soybeans was 1.75+-0.10 compared to 1.19+-0.08 of control soybeans. When control soybeans were supplemented with free DL-methionine to equal the level of total methionine of modified soybeans, the PER value was increased to 2.29+-0.05. [AS/SS]
Journal Citation
v.33(1):39-44, JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Contact Information
harvest@worldveg.org
Record Appears in
Research > Published Articles