ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Freeze-etching was used to study the ultrastructure of waxy maize starch and acid-treated (0.5M HCl, 25°C, 24 hr) waxy maize starch. The outer surfaces of the untreated granules were smooth with a faint fibrillar pattern. Granule cross-fractures had a fine particulate appearance with some radially-oriented ridges. Internal cracks were evident. Starch granules soaked in acid developed surface pits. Areas of hydrolysis had a distinctive structure and occurred in restricted zones. The shape of the acid-treated starch granules remained unchanged. However, inner regions showed extensive ultrastructural changes and water infiltration. Freeze-etching revealed bands of alternating high and low water content which formed lamellae in a few granules.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1978.tb02403.x
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