Synthesis and paste properties of octenyl succinic anhydride modified early Indica rice starch
نویسندگان
چکیده
Octenyl succinic anhydride (OSA) modified early Indica rice starch was prepared in aqueous slurry systems using response surface methodology. The paste properties of the OSA starch were also investigated. Results indicated that the suitable parameters for the preparation of OSA starch from early Indica rice starch were as follows: reaction period 4 h, reaction temperature 33.4 °C, pH of reaction system 8.4, concentration of starch slurry 36.8% (in proportion to water, w/w), amount of OSA 3% (in proportion to starch, w/w). The degree of substitution was 0.0188 and the reaction efficiency was 81.0%. The results of paste properties showed that with increased OSA modification, the starch derivatives had higher paste clarity, decreased retrogradation and better freeze-thaw stability.
منابع مشابه
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1 Plant Polymer and 2 Biomaterials Processing Research Units, National Center for Agricultural Utilization Research, Agricultural Research Service, U.S. Department of Agriculture, 1815 N. University St., Peoria, IL 61604. 3 Department of Chemistry, University of Massachusetts Lowell, One University Avenue, Lowell, MA 01854; current address:Department of Chemistry, Rutgers University, 610 Taylor...
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