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Analysis of trypsin inhibitors
and lectins in white kidney beans (Phaseolus vulgaris, var. Processor) in a
combined method.
J Assoc Off Anal Chem 1991 Nov-Dec;74(6):940-3
Roozen JP, de Groot J.
Agricultural University, Department of Food Science, Wageningen, The
Netherlands.
Buffered saline extraction, affinity chromatography, and Folin-BSA protein assay
were used consecutively to provide a combined method for analysis of trypsin
inhibitors and lectins in white kidney beans (Phaseolus vulgaris, var.
Processor). The method was tested by following the decrease of both
antinutritional factors by germination of the beans for 7 days at 20 degrees C.
Repeatability coefficients of variation were 2-7.4% for the trypsin inhibitors
and 2.2-10% for the lectins. After 7 days of germination, trypsin inhibitors and
lectins were reduced by 72 and 92%, respectively.
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