Journal
FOOD CHEMISTRY
Volume 81, Issue 1, Pages 113-118Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0308-8146(02)00386-2
Keywords
resistant starch; beta-glucans; sorghum; soaking; autoclaving
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beta-Glucan and resistant starch (RS) intake are linked to various physiological benefits. This study aimed to determine sorghum beta-glucan and RS contents, and investigate the effects of processing on these. Grain sorghum was soaked at 37degreesC for varying periods, then autoclaved at either 120 or 130degreesC, and freeze-dried. Glucose, sucrose, beta-glucan and RS levels were determined. Glucose content increased minimally with soaking. Sucrose content decreased from 0.90 g/100 g to 0.77 g/100 g with soaking. Autoclaving had little effect. beta-Glucan content in unprocessed sorghum (0.12 g/100 g) increased with soaking and autoclaving at 120degreesC. RS content increased from 6.5 g/100 g in unprocessed samples to 10.4 g/100 g with soaking. Autoclaving at 120degreesC reduced RS content to a greater extent than at 130degreesC. Moisture and heat processing therefore influence RS and beta-glucan availability in sorghum. (C) 2002 Elsevier Science Ltd. All rights reserved.
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