Abstract:Studies evaluating the protein nutritive value of beans labelled with 15 N, using nitrogen balance and the quantitation of faecal and urinary endogenous nitrogen, determined by isotopic dilution, have been extensively used. The objective of this research was to verify if the isotopic labelling of raw, freeze dried beans (Phaseolus vulgaris L., cultivar Piratã 1) with 1.394 atoms% 15 N, resulted in the same abundance of the whole flour and of the protein fractions extracted from the beans with 0.5 mol L -1 NaCl… Show more
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