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Variation in the Composition and Physical Properties of Barley Starches
Author(s) -
Morrison W. R.,
Scott D. C.,
Karkalas J.
Publication year - 1986
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19860381104
Subject(s) - amylose , starch , swelling , edaphic , food science , chemistry , amylase , agronomy , biochemistry , biology , materials science , enzyme , ecology , composite material , soil water
Amylose and lysophospholipid contents, swelling factor, and dimensions of large A‐type and small B‐type granules were measured in 21 waxy, normal and high‐amylose starches. Amylose and lipid contents were highly correlated, and both were inversely related to swelling factor. Susceptibility of the starch granules to amyloglucosidase was a function of specific surface area, and was not affected by amylose or lipid content. Environmental (climatic and edaphic) effects seen in 16 samples of Triumph barley starch were generally small (coeff. variation < 10%) and not related to weather statistics, except for lysophospholipid content which was positively correlated with accumulated temperature and solar radiation during the grain‐filling period and inversely related to swelling factor.