摘要
借助氢氧化钠和硫脲作用制备再生冷水可溶性淀粉(regenerated cold water soluble starch,RCSS)。当配制质量分数为10%的淀粉溶液时,加入19.2%氢氧化钠(以淀粉质量计)以及14%硫脲(以淀粉质量计),搅拌10 min,淀粉可以很好溶解于溶液中,醇直接分离制备的RCSS能达到55.6%的溶解度。通过不同分离提纯方式对RCSS溶解度的影响因素进行探究,结果表明调pH水提醇沉法制备RCSS性能最佳,可以使得RCSS的溶解度达到80.5%,灰分为0.75%。
The regenerated cold water soluble starch was prepared by sodium hydroxide and thiourea.When the solid content is 10%,5 g corn starch can be solved well by adding 0.96g sodium hydroxide and 0.7g thiourea for 10min stirring.The solubility of regenerated starch can reach 55.6%.The different separation and purification methods of regenerated starch can influence the solubility.The results showed that when pH was adjusted to neutral pH with water extraction and alcohol precipitation method,the regenerated cold water soluble starch can obtained optimal solubility for 80.5%and the ash content was 0.75%.
作者
徐文聪
杨飘
刘涵
陈慧
邵双喜
Xu Wencong;Yang Piao;Liu Han;Chen Hui;Shao Shuangxi(National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China;Fenghua Institute of Science and Technology,Ningbo University of Technology Ningbo 315000,China)
出处
《皮革科学与工程》
CAS
北大核心
2018年第5期16-19,共4页
Leather Science and Engineering
基金
2018四川大学"大学生创新创业训练计划"(2015141502078)
四川大学"跨学科专业-贯通式"人才培养专项项目(SCUKG017)
宁波工程学院奉化研究院科学基金资助(FHI-01811)
关键词
氢氧化钠
硫脲
冷水可溶性淀粉
sodium hydroxide
thiourea
cold water soluble starch
