Synthesis and paste properties of octenyl succinic anhydride modified early Indica rice starch.
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 degrees 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.
Song
Xiao-yan
XY
Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310029, China. xysong@zju.edu.cn
Chen
Qi-he
QH
Ruan
Hui
H
He
Guo-qing
GQ
Xu
Qiong
Q
D001671:Biochemistry / Q000379:methods; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D005615:Freezing; D006863:Hydrogen-Ion Concentration; D008027:Light; D015233:Models, Statistical; D012275:Oryza / Q000378:metabolism*; D013213:Starch / Q000737:chemistry*; D013387:Succinic Anhydrides / Q000032:analysis / Q000737:chemistry*; D013696:Temperature
D013387:Succinic Anhydrides; C031801:succinic anhydride; D013213:Starch