【摘要】 壳聚糖仅溶解于较低pH的有机酸溶液或不可食用成分的溶液中,以碳酸氢铵调节壳聚糖溶液pH,制备可食用的高pH壳聚糖膜,在此基础上以壳聚糖、白藜芦醇、环状糊精、乳清蛋白等为原料,制备以环状糊精-白藜芦醇包合物为内容物的壳聚糖复合膜,研究白藜芦醇在不同pH复合膜中的释放率。通过单因素试验,确定壳聚糖复合膜中0.5 mol/L碳酸氢铵的最适添加量为5m L/100 mL,1%乳清蛋白的最佳添加量为7 mL/100 mL以及复合膜成膜后于pH6的条件下浸泡白藜芦醇的释放效果最佳。缓释效果通过扫描电镜分析(SEM)、傅里叶红外光谱分析、X-射线衍射、TG/DTA进行验证。更多还原

【Abstract】 Chitosan is only dissolved in a lower pH organic acid solution or an inedible component solution. The ammonium chitosan solution was used to adjust the pH of the chitosan solution to prepare an edible high pH chitosan film. Chitosan, resveratrol, cyclodextrin, whey protein, etc. were used as raw materials to prepare a chitosan composite film containing cyclodextrin-resveratrol inclusion complex as content, and study resveratrol in different release rate in a pH composite membrane. Through the single factor experiment, the optimum addition amount of 0.5 mol/L ammonium bicarbonate in the chitosan composite membrane was 5 mL/100 mL, the optimal addition amount of 1% whey protein was 7 mL/100 mL, and the composite membrane was formed. The effect of soaking resveratrol at pH 6 was the best.The sustained release effect was verified by scanning electron microscopy(SEM), Fourier transform infrared spectroscopy, X-ray diffraction, and TG/DTA.更多还原