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Variation in in vitro digestibility of barley protein
Author(s) -
Büchmann Nils B.
Publication year - 1979
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740300607
Subject(s) - hordein , pepsin , protein digestibility , chemistry , in vitro , food science , lysine , zoology , hordeum vulgare , agronomy , biochemistry , poaceae , biology , enzyme , amino acid
In vitro digestibility of protein was measured with pepsin/pancreatin in 321 spring barley lines grown in the field. The variation in digestibility was far less than the variation in the protein content. A small environmental influence on the digestibility was found. Two entries had slightly impaired digestibilities; these findings were partially verified in a repeated field trial, but were not confirmed in vivo. In vitro digestibilities of barleys grown in pots at various N‐levels were positively correlated with protein or hordein content. In vitro digestibility was negatively correlated with the fibre content in decortification fractions of Bomi and the high‐lysine mutant Risø 1508. The digestibility was positively correlated with the hordein concentration for the Bomi fractions, but not for the 1508 fractions.