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Title: Modification of tapioca starch by non-chemical route using jet atmospheric argon plasma
Authors: Rungtiwa Wongsagonsup
Panakamol Deeyai
Weerawut Chaiwat
Sawanee Horrungsiwat
Kesini Leejariensuk
Manop Suphantharika
Asira Fuongfuchat
Somsak Dangtip
Mahidol University
Thailand National Science and Technology Development Agency
South Carolina Commission on Higher Education
Keywords: Chemistry;Materials Science
Issue Date: 15-Feb-2014
Citation: Carbohydrate Polymers. Vol.102, No.1 (2014), 790-798
Abstract: Non-chemical modification of tapioca starch was investigated using jet atmospheric argon plasma treatment. Two forms of starch slurry, i.e. granular starch (G) and cooked starch (C), were jet-treated by argon plasma generated by supplying input power of 50 W (denoted as G50 and C50 samples) and 100 W (denoted as G100 and C100 samples) for 5 min. Physical, rheological, and structural characteristics of the modified starch were investigated. The G50 and C100 samples had lower paste clarity but higher thermal stability and performed stronger gels (G50 only) compared to their control counterparts. On the other hand, the analyzed properties of the G100 and C50 samples showed the opposite trend. FTIR and 1H NMR results revealed that the relative areas of COC and OH peaks were changed after the treatment. Cross-linking reaction seemed to predominantly take place for the G50 and C100 samples, whereas depolymerization predominated for the G100 and C50 samples. © 2013 Elsevier Ltd.
ISSN: 01448617
Appears in Collections:Scopus 2011-2015

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