热溶胶结合高温干燥降低琼脂溶胶温度的研究  

Study on Reducing Agar Sol Temperature by Hot Sol Combined with High Temperature Drying

作　　者：谢杉玉 梁懿 邬应龙[2] 林景新 余勇[4] 杨钊辉 倪辉 XIE Shanyu;LIANG Yi;WU Yinglong;LIN Jingxin;YU Yong;YANG Zhaohui;NI Hui(College of Food and Bioengineering,Jimei University,Xiamen 361021,China;College of Food,Sichuan Agricultural University,Ya’an 625014,China;Fujian Provincial Weikang Food Science and Technology Limited Company,Xiamen 361021,China;School of Economics and Finance,Xi’an Jiaotong University,Xi’an 710061,China;Fujian Provincial Key Laboratory of Food Microbiology and Engineering,Xiamen 361021,China;Research Center of Food Biotechnology of Xiamen City,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]四川农业大学食品学院,四川雅安625014 [3]厦门唯康食品科技有限公司,福建厦门361021 [4]西安交通大学经济与金融学院,陕西西安710061 [5]福建省食品微生物与酶工程重点实验室,福建厦门361021 [6]厦门市食品生物工程技术研究中心,福建厦门361021

出　　处：《食品科技》2021年第1期245-250,共6页Food Science and Technology

基　　金：福建省海洋经济发展补助资金项目(FJHJF-L-2020-1);厦门市海洋发展局项目(17CZP006HJ02)。

摘　　要：琼脂在食品工业中具有重要的应用价值,将琼脂溶化温度降低至90 ℃以下有利于琼脂在乳制品中的应用。文章探究了加热溶胶后高温干燥对琼脂性质的影响,并探索琼脂与常用水溶性胶体复配后经加热溶胶、高温干燥制备低温溶解琼脂复配胶体的技术。研究发现琼脂在热处理时间1.5 h、热处理温度120 ℃条件下进行热处理并经高温烘干后其溶化温度最低。琼脂与卡拉胶、海藻酸钠、魔芋胶复配后经加热溶胶、高温干燥后最低溶化温度分别可达83.3、76.7、80.1 ℃。随着其他胶体量的增加,复配胶体的其他理化性质呈现差异性变化。试验结果说明琼脂与其他胶体复配后通过加热溶胶及高温干燥处理,可以制备得到溶化温度低于90 ℃的琼脂复配胶体,为琼脂在乳制品中的应用提供了技术参考。Agar has important application value in food industry.It is beneficial to the application of agar in dairy products by reducing the dissolution temperature of agar to below 90 ℃.The effect of high temperature drying on the properties of agar was studied,and the technology of preparing low temperature dissolving agar composite colloid by hot sol high temperature drying method was explored.It was found that the melting temperature of agar was the lowest after heat treatment at 1.5 h,120 ℃ and high temperature drying.After heating sol and high temperature drying the lowest melting temperature of agar and carrageenan,sodium alginate,konjac gum complex can reach 83.3 ℃,76.7 ℃ and 80.1 ℃,respectively.With the increase of the content of other colloids,the other physical and chemical properties of the composite colloid also changed in varying degrees.The results showed that agar composite colloid with solution temperature lower than 90 ℃ could be prepared by sol heating and high temperature drying,which provided technical reference for the application of agar in dairy products.

关 键 词：琼脂 热处理 高温干燥 复配 

分 类 号：TS201.7[轻工技术与工程—食品科学]