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High‐Pressure Gelatinization of Barley Starch at Low Moisture Levels and Elevated Temperature
Author(s) -
Vainionpää Jukka,
Forssell Pirkko,
Virtanen Teija
Publication year - 1993
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.19930450106
Subject(s) - starch gelatinization , starch , moisture , differential scanning calorimetry , materials science , water content , enthalpy , composite material , food science , mineralogy , chemistry , thermodynamics , geology , geotechnical engineering , physics
High‐pressure gelatinization of barley starch at low water contents and at elevated temperature was performed in a differential scanning calorimeter equipped with a pressure chamber. Microscopic examination of the samples showed complete loss of birefringence and rupture of granular structure in most samples. The results indicated that enthalpy levels much higher than those in high‐moisture gelatinization are needed to attain proper gelatinization and plastification of starch at low water contents.