Physicochemical, in vitro digestibility and functional properties of carboxymethyl rice starch cross-linked with epichlorohydrin

Cross-linked carboxymethyl rice starches (CL-CMRSs) were prepared from reactions between native rice starch and varied concentrations (0.1-15% w/w, M-0.1 to M-15) of epichlorohydrin (ECH) in a simultaneous carboxymethylation- crosslinking reaction setup using methanol as the solvent. The degree of c...

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Main Authors: Kittipongpatana O.S., Kittipongpatana N.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-84878408559&partnerID=40&md5=7bca20230b61c31300e6dafed65b44f3
http://cmuir.cmu.ac.th/handle/6653943832/4695
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-46952014-08-30T02:42:45Z Physicochemical, in vitro digestibility and functional properties of carboxymethyl rice starch cross-linked with epichlorohydrin Kittipongpatana O.S. Kittipongpatana N. Cross-linked carboxymethyl rice starches (CL-CMRSs) were prepared from reactions between native rice starch and varied concentrations (0.1-15% w/w, M-0.1 to M-15) of epichlorohydrin (ECH) in a simultaneous carboxymethylation- crosslinking reaction setup using methanol as the solvent. The degree of carboxymethyl substitution was between 0.24 and 0.28, while apparent amylose contents were lowered due to modification. SEM images showed minor change on the granule surface, while XRD profiles indicated slight loss of crystallinity. DSC thermograms revealed no transition peak in all treated samples. The water uptake (WU), swelling volume (SV) and free swelling capacity (FSC) of CL-CMRSs increased significantly as a result of the modification, while swelling of CMRSs cross-linked with 2% (M-2) and 3% (M-3) ECH yielded FSC values and WU values that were much greater than those of native starches and were comparable to that of Explotab®. All modified starch samples showed increased amount of rapidly digestible starch (RDS), while cross-linking with 5-7.5% ECH raised the resistant starch (RS) content, compared to native starch. M-2 also showed promising results in tablet disintegration test. ECH-CL-CMRSs could potentially be used as an excipient in pharmaceutical and food/food supplement products. © 2013 Elsevier Ltd. 2014-08-30T02:42:45Z 2014-08-30T02:42:45Z 2013 Article 03088146 10.1016/j.foodchem.2013.04.030 23790936 FOCHD http://www.scopus.com/inward/record.url?eid=2-s2.0-84878408559&partnerID=40&md5=7bca20230b61c31300e6dafed65b44f3 http://cmuir.cmu.ac.th/handle/6653943832/4695 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description Cross-linked carboxymethyl rice starches (CL-CMRSs) were prepared from reactions between native rice starch and varied concentrations (0.1-15% w/w, M-0.1 to M-15) of epichlorohydrin (ECH) in a simultaneous carboxymethylation- crosslinking reaction setup using methanol as the solvent. The degree of carboxymethyl substitution was between 0.24 and 0.28, while apparent amylose contents were lowered due to modification. SEM images showed minor change on the granule surface, while XRD profiles indicated slight loss of crystallinity. DSC thermograms revealed no transition peak in all treated samples. The water uptake (WU), swelling volume (SV) and free swelling capacity (FSC) of CL-CMRSs increased significantly as a result of the modification, while swelling of CMRSs cross-linked with 2% (M-2) and 3% (M-3) ECH yielded FSC values and WU values that were much greater than those of native starches and were comparable to that of Explotab®. All modified starch samples showed increased amount of rapidly digestible starch (RDS), while cross-linking with 5-7.5% ECH raised the resistant starch (RS) content, compared to native starch. M-2 also showed promising results in tablet disintegration test. ECH-CL-CMRSs could potentially be used as an excipient in pharmaceutical and food/food supplement products. © 2013 Elsevier Ltd.
format Article
author Kittipongpatana O.S.
Kittipongpatana N.
spellingShingle Kittipongpatana O.S.
Kittipongpatana N.
Physicochemical, in vitro digestibility and functional properties of carboxymethyl rice starch cross-linked with epichlorohydrin
author_facet Kittipongpatana O.S.
Kittipongpatana N.
author_sort Kittipongpatana O.S.
title Physicochemical, in vitro digestibility and functional properties of carboxymethyl rice starch cross-linked with epichlorohydrin
title_short Physicochemical, in vitro digestibility and functional properties of carboxymethyl rice starch cross-linked with epichlorohydrin
title_full Physicochemical, in vitro digestibility and functional properties of carboxymethyl rice starch cross-linked with epichlorohydrin
title_fullStr Physicochemical, in vitro digestibility and functional properties of carboxymethyl rice starch cross-linked with epichlorohydrin
title_full_unstemmed Physicochemical, in vitro digestibility and functional properties of carboxymethyl rice starch cross-linked with epichlorohydrin
title_sort physicochemical, in vitro digestibility and functional properties of carboxymethyl rice starch cross-linked with epichlorohydrin
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-84878408559&partnerID=40&md5=7bca20230b61c31300e6dafed65b44f3
http://cmuir.cmu.ac.th/handle/6653943832/4695
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