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J Biosci Bioeng. 2002;93(1):60-3.

Debittering of enzymatic hydrolysates using an aminopeptidase from the edible basidiomycete Grifola frondosa.

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  • 1Food Research Center, Niigata Agricultural Research Institute, 2-25 Shin-ei cho, Kamo, Niigata 959-1381, Japan. nisiwaki@ari.pref.niigata.jp

Abstract

Bitter peptide solutions, prepared by the enzymatic hydrolysis of soy protein and milk casein, were treated with an aminopeptidase from the edible basidiomycete Grifola frondosa. As the incubation time elapsed, the amount of free amino acids released increased and the bitterness of the enzyme reaction mixtures decreased. However, the debittering of the milk casein hydrolysate by the aminopeptidase was less effective than that observed for the soy protein hydrolysate. Hydrophobic amino acids such as valine, leucine, phenylalanine, tyrosine, and isoleucine were preferentially released from the bitter solutions by the action of the aminopeptidase.

PMID:
16233166
[PubMed]
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