蚕沙分步制取果胶和叶绿素锌钠盐  

Preparation of pectin and sodium zinc chlorophyllin from silkworm faeces

作　　者：刘桃李[1] 凌敏[1] 梁小双 

机构地区：[1]广西大学化学化工学院,南宁530004

出　　处：《食品科技》2013年第11期255-258,共4页Food Science and Technology

基　　金：广西大学横向课题项目

摘　　要：以蚕沙为原料,分步制取果胶和叶绿素锌钠盐,改变了二者的传统生产工艺。结果表明:制取果胶最佳提取工艺条件为稀硫酸浓度0.5%、温度70℃、料液比1:25、提取时间1 h;选用S-8大孔吸附树脂脱色效果较好,质量符合GBn 246—1985要求;废渣经醇提、酸化、锌代、皂化、成盐制得的叶绿素锌钠盐在411、644 nm处有2个吸收峰,产品需要避光保存,能用于高温处理的食品中,接近中性或者弱碱性环境中较稳定。A research of preparation pectin and sodium zinc chlorophyllin from silkworm faeces, which improved the traditional process of preparing pectin and sodium zinc chlorophyllin. The results indicate： while H2SO4 concentration is 0.5%, reaction temperature is 70 %, 125 solid-liquid ratio, reaction time 1 h, using macroreticular resin of S-8 to decolorize, the quality of pectin meets the requirements of GBn 246-- 1985. And sodium zinc chlorophyllin was prepared through the processes of extraction, acidification, zincing, saponification and basification. The results showed that there were two characteristic absorptionpeaks at 411, 644 nm in sodium zinc chlorophyllin solution and it had stable character on dark place, neutral or weakly basic environment and can be used in high temperature processing of food.

关 键 词：蚕沙 果胶 叶绿素锌钠盐 稳定性 

分 类 号：TS202.3[轻工技术与工程—食品科学]