【摘要】 研究了交联聚乙烯吡咯烷酮(PVPP)吸附库拉索芦荟凝胶液中多酚的条件和效果。研究表明:PVPP可吸附芦荟凝胶液中的多酚,进而延缓沉淀或浑浊的发生,提高芦荟凝胶的稳定性和贮存期。分析吸附机理后认为,PVPP上的活性吸附中心与多酚形成氢键吸附。在单因素试验的基础上,通过正交试验得到PVPP吸附芦荟凝胶液中多酚的优化工艺条件,即:PVPP用量1.5g/L,反应温度45℃,反应时间10min。更多还原

【Abstract】 The adsorption conditions and effects on poly-phenol in Aloe vera gel with cross linked polyvinyl pyrrolidone(PVPP)was studied In this paper. It was proved that the poly-phenol could be adsorbed by PVPP to improve the stability of Aloe Vera gel and extend the storage period. The adsorption mechanism was carried out by hydrogen bond adsorption of cross linked PVP to poly-phenol. On the base of single-factor test,through orthogonal test the optimum conditions of poly-phenol adsorbed by PVPP in aloe gel was as follows:PVPP use level 1.5 g/L,temperature 45 ℃,and time 10 min.更多还原