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Preparation and Surface Activities of Modified Soy Protein–Dextrin Surfactants
Author(s) -
Lin LiHuei,
Lai YuChing,
Chen KengMing,
Li CaiShan
Publication year - 2016
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-015-1766-7
Subject(s) - chemistry , dextrin , surface tension , critical micelle concentration , wetting , soy protein , moiety , emulsion , chemical engineering , micelle , polymer chemistry , organic chemistry , chromatography , aqueous solution , food science , physics , quantum mechanics , starch , engineering
A series of polymeric surfactants has been prepared through the reaction of soy protein with polyethoxylated stearyl ethers of various hydrophilic chain lengths. These surfactants exhibited surface activity, evaluated using surface tension, foaming, and wetting power that was superior to that of traditional surfactants containing only one hydrophobic moiety and one hydrophilic head group. Changing the ethoxylate (EO) group length had a significant effect on the surface activity. Increasing the EO group length decreased the critical micelle concentration (CMC) and increased the surface tension at the CMC ( γ CMC ). The good surface properties of these polysaccharide/protein‐type surfactants suggest that they could be used as emulsifiers to prepare oil‐in‐water emulsions displaying good stability.