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X‐ray diffraction of oriented amylose fibers. III. The structure of amylose– n ‐butanol complexes
Author(s) -
Hinkle M. E.,
Zobel H. F.
Publication year - 1968
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.1968.360060807
Subject(s) - amylose , chemistry , anhydrous , butanol , crystallography , methanol , hydrate , diffraction , ethanol , polymer chemistry , chemical engineering , organic chemistry , starch , physics , optics , engineering
Complexes of amylose with n ‐butanol were prepared both as crystalline precipitates and as oriented fibers. These complexes were subjected to x‐ray analysis, their unit cells were calculated, and the space group of P 2 1 2 1 2 1 was confirmed. n ‐Butanol complexes exist in both hydrated and anhydrous forms. There is no evidence for methanol, ethanol, or n ‐propanol structures similar to those shown by the n ‐butanol complex. The Complexes are unstable in the open air and revert to V‐amylose hydrate on standing.