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The Conformation of Amylose in Dilute Solution
Author(s) -
Banks W.,
Greenwood C. T.
Publication year - 1971
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.19710230903
Subject(s) - aqueous solution , amylose , random coil , helix (gastropod) , interpretation (philosophy) , electromagnetic coil , chemistry , character (mathematics) , chemical physics , molecule , salt (chemistry) , crystallography , thermodynamics , salt solution , organic chemistry , physics , mathematics , circular dichroism , computer science , geometry , quantum mechanics , starch , snail , programming language , ecology , biology
The hydrodynamic behaviour of amylose in dilute solution has been examined in detail. Evidence for, and against, the existence in aqueous solution of a conformation which is predominantly helical in character is critically discussed. Proper interpretation of the solution behaviour of amylose shows that the molecule is a statistical, or random, coil having no helical content in neutral, aqueous solution. In such solutions, the presence of complexing agents causes a coil‐to‐helical in character is critically discussed. Proper interpretation of the solution behaviour of in the presence of salt represents a change from random coil to helix, and not as hitherto suggested, a helix‐to‐coil transition.