Structural studies of resistant starch derived from processed(autoclaved) rice

Silanere, L. Mangala and Tharanathan, R. N. (1999) Structural studies of resistant starch derived from processed(autoclaved) rice. European Food Research and Technology, 209. pp. 38-42.

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Abstract

<p align="justify">Resistant starch (RS), isolated by hydrolysis with Termamyl, protease and amyloglucosidase, of fivecycle autoclaved rice was purified by size exclusion chromatography. Structural characterization by b-amylolysis, 13C NMR and methylation followed by GC-MS analysis revealed RS to be a linear (1]4)- a-D-glucan,originating probably from amylose. Its molecular weight was low, 1.20!106 Da, and amounted to 7400 D-glucose residues. X-ray diffraction measurements showed RS to have both B-type and V-type diffraction patterns. Differential scanning calorimetry data revealed the thermal stability characteristics of RS. The undigested material (equivalent to RS) recovered from the ileum of rat intestine exhibited an almost comparable GPC profile, molecular weight and lmax characteristics with those of in vitro isolated RS.</p>

Item Type:	Article
Uncontrolled Keywords:	Rice Resistant starch Digestibility Structural studies
Subjects:	600 Technology > 08 Food technology > 25 Sugar/Starch/Confectionery 600 Technology > 08 Food technology > 21 Cereals > 01 Rice 600 Technology > 08 Food technology > 18 Processed foods
Divisions:	Dept. of Biochemistry
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	19 Sep 2005
Last Modified:	28 Dec 2011 09:25
URI:	http://ir.cftri.res.in/id/eprint/183

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