苹果渣果胶提取的优化  

Optimizing extraction of pectin from apple pomace

作　　者：李朋亮[1] 刘敦华[1] 

机构地区：[1]宁夏大学农学院,银川750021

出　　处：《食品科技》2013年第12期242-245,共4页Food Science and Technology

摘　　要：采用酸提盐析的方法对苹果渣果胶的提取工艺进行了研究。利用正交试验得出了提取苹果渣果胶的最佳工艺条件:温度85℃、pH1.5、提取时间2.0 h、料液比为1:14(v/v)。研究了饱和Al2(SO4)3溶液的加入量对果胶提取率的影响,即加入量为果胶液的3%(v/v)时,可基本使果胶完全析出,其提取率可达到17%。对脱盐液用量进行了研究,当1 g湿果胶加1.5 mL脱盐液时,便可完全脱盐。A rapid curing resin system made from diglycidyl ether of bisphenol A （DGEBA） epoxy, modified imidazole （MIM） and modified aliphatic amine （MAA） was developed. The curing behavior and rheological characteristic of the resin were evaluated by DSC and rheological analysis respectively. The optimum ratio of the blending of curing agents was selected. The carbon fiber/epoxy resin composite laminates using this resin system were manufactured through vacuum assisted resin injection molding （VARIM） under short-term curing schedule. The processing quality and mechanical properties of the laminates were studied and compared with the properties of the laminates under traditional curing schedule. The results show that the curing time of the resin system is 5 min with 95% curing degree, and the cure time of the laminates using the studied resin can be controlled within 13 min under 120 ℃ with more than 95% curing degree and few defects. Compared with the laminates cured in traditional curing schedule （curing time more than 2 h）, the laminates manufactured under short-term curing schedule exhibits slight decreases in the flexural property and thermal stability.

关 键 词：苹果渣 果胶 盐析法 提取 

分 类 号：TS255-36[轻工技术与工程—农产品加工及贮藏工程]