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Citation: JING Wei, LI Junsheng, HUANG Guoxia, YAN Liujuan, LAI Chunhua. Optimized Preparation and Emulsifying Properties of Carboxymethyl Silk Fibroin[J]. Chinese Journal of Applied Chemistry, ;2013, 30(1): 73-78. doi: DOI:10.3724/SP.J.1095.2013.20042 shu

Optimized Preparation and Emulsifying Properties of Carboxymethyl Silk Fibroin

1.
a Department of Biological and Chemical Engineering, Guangxi University of Technology, Liuzhou 545006, China;
2.
b Liuzhou Supervision and Examination Station of Product Quality, Liuzhou 545006, China

Corresponding author: LI Junsheng,
Received Date: 14 February 2012
Available Online: 4 June 2012
Fund Project: 广西科技攻关项目(桂科攻11107018-1) (桂科攻11107018-1)

Soluble carboxymethyl silk fibroin was prepared from the waste silk by etherification of the water-fast silk fibroin and the monochloracetic acid in ethanol.Various factors on etherified degree of products(such as alkalized time,alkalized temperature,etherified time and etherified temperature,etc.) were discussed.The optimized etherification conditions for preparing the carboxymethyl silk fibroin are:alkalization time:90 min;etherification time:90 min;alkalization temperature:25℃,etherification temperature:70℃.The degree of etherification of the carboxymethyl silk fibroin is 0.7425.The critical micellar density of carboxymethyl silk fibroin is 1.25 g/L and the hydrophilic-lipophilic balance(HLB) value is 10.The fibroin solution is unsuitable for using as a foamer,even though it has some foaming ability,and the formed foam is stable in the mass ration range of 1.0%~1.2%.The silk fibroin solution has exhibited excellent emulsifying capacity and emulsion stability,which renders the silk fibroin can be used as good emulsifiers.
- carboxymethyl silk fibroin,
- alkalization,
- etherification,
- degree of etherification,
- emulsification,
- foaming
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