https://www.selleckchem.com/products/gc7-sulfate.html This study investigated the particle disintegration of cooked milled rice during in vitro digestion to identify its potential for rapidly predicting glycaemic index (GI). Milled grains and flour of rice with varying GI were cooked, stirred and subjected to digestion followed by kinetics analyses. Despite variations in physicochemical parameters (typically amylose content), flours showed a single-phase-digestion rate (k, ∼0.12 min-1) which did not vary significantly between varieties. In contrast, intact grains were disintegrated into small/intermediate (d 300 μm) particles. The small/intermediate particles comprising 50-70 % starch were initially-digested (0-20 min) at a fast k-f (∼0.05-0.10 min-1), which enabled to differentiate rice digestibility; whereas the large was latter-digested (20-180 min) at a slow k-s (∼0.04 min-1). The sum-ratio of disintegrated-particle 0-300 μm (Q-300) correlated positively with clinical GI values, allowing for a digestibility prediction of intact milled rice grain.In this study, a natural polymer-based organic flocculant (sodium alginate-methacrylatoethyl trimethyl ammonium chloride, SA-PDMC) was synthesized by graft copolymerization. The optimum preparation procedures were determined by single factor experiments. The flocculation behaviors of SA-PDMC were investigated in humic acid (HA) and kaolin suspension considering the effects of flocculant doses and initial pH. The results indicated that charge neutralization and bridging action played an important role in the removals of HA and kaolin. Also, SA-PDMC performed well in a wide pH range of 5.0-10.0. Besides, SA-PDMC, as polyaluminium (PAC) aid, was investigated in the lake water treatment. The ratio of PAC and SA-PDMC was optimized through response surface methodology based on a central composite design. Results showed that SA-PDMC and PAC have a strong synergy, under optimal conditions SA-PDMC can reduce the dose of PAC by 40