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Breakdown of crystal structure in potato starch during gelatinization

✍ Scribed by Paul J. Jenkins; Athene M. Donald

Book ID
101256581
Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
195 KB
Volume
66
Category
Article
ISSN
0021-8995

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✦ Synopsis

Using a synchrotron source, in situ small-and wide-angle X-ray studies of the gelatinization of 40% potato starch slurries were carried out. By determining how the crystallinity index changes with temperature, it is possible to follow the destruction of the crystals. Fitting the (100) peak of the starch structure has shown that the crystals change only slightly in dimension over the temperature range studied. The large-scale swelling which occurs during gelatinization is associated with amorphous regions of the starch granule structure.

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