硼氢化钠辅助增白琼脂工艺研究  

Agar Whiting Assisted by Sodium Borohydride

作　　者：林坤城 赫慧敏 杨秋明 肖琼 翁惠芬 肖安风 LI N Kun-cheng;HE Hui-min;YANG Qiu-ming;XIAO Qiong;WENG Hui-fen;XIAO An-feng(College of Food and Biological Engineering,Jimei University,Xiamen 361021,China;Fujian Ivqi Green Food Colloid Co.,Ltd.,Zhangzhou 363100,China;Algal Polysaccharide Enterprise Engineering Technology Research Center in Fujian Province,Xiamen 361021,China;Engineering Technology Research Center of Marine Functional Food in Fujian Province,Xiamen 361021,China)

机构地区：[1]集美大学食品与生物工程学院,福建厦门361021 [2]福建省绿麒食品胶体有限公司,福建漳州363100 [3]福建省海藻多糖企业工程技术研究中心,福建厦门361021 [4]福建省海洋功能食品工程技术研究中心,福建厦门361021

出　　处：《内蒙古民族大学学报（自然科学版）》2018年第5期376-382,共7页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：厦门市科技计划项目(3502Z20183030);福建省高校产学合作项目(2016N5008);福建省科技重大专项/专题(2015NZ0001-1)

摘　　要：琼脂是从红藻中提取得到的一种多糖分子,在食品、生物、医疗等方面应用较广.本文在碱法工艺提取江蓠琼脂的基础上,对琼脂增白工艺进行研究,以琼脂白度为考察指标,通过单因素试验确定了最佳提取条件:乙醇处理最佳条件为乙醇添加量20%,处理温度80℃,处理时间5 h,在此条件下,白度可达到41.83%;硼氢化钠处理最佳条件为硼氢化钠添加量0.8%,处理温度85℃,处理时间5 h,在此条件下,白度可达到44.67%.同时,对各工艺琼脂的部分理化指标,如白度、凝胶强度、粘度、融化温度、溶解温度、透明度、溶胀性,以及灰分、蛋白质、硫酸根、3,6-内醚半乳糖的含量进行了测定.A single factor experiment was conducted to study the whitening process of agar. The optimum extrac tion conditions were determ ment were at 20%, ethano ned using the whiteness of agar as the index. The optimum conditions of ethanol treat- for 5 h at 80℃.Under the optimum extraction conditions, the whiteness could reach 41.83%. The optimum conditions of sodium borohydride treatment were 0.8% sodium borohydrideat for 5 h at 85℃. Under the optimum extraction conditions, the whiteness could reach 44.67%. The relative whiteness, gel strength, viscosity, melting temperature, protein content, dissolution temperature, transparency, swelling property, ash content sulfate-radical and 3, 6-anhydro galactosecontent were determined.

关 键 词：琼脂 提取 增白 表征 

分 类 号：TQ281[化学工程—有机化工]