Fabrication, characterization, and emulsifying properties of hexadecyltrimethylammonium bromide (CTAB) complexed alginate microgel

肺表面活性物质 化学工程 化学 吸附 溴化物 色谱法 有机化学 生物化学 工程类
作者
Wenxin Jiang,Wei Xiang,Longquan Xu,Dan Yuan,Zhiming Gao,Bing Hu,Yanlei Li,Yuehan Wu
出处
期刊:Food Hydrocolloids [Elsevier BV]
卷期号:140: 108607-108607 被引量:10
标识
DOI:10.1016/j.foodhyd.2023.108607
摘要

In the current study, complexes (CAMs) of alginate microgels (AMs) and hexadecyltrimethylammonium bromide (CTAB) were prepared, and further used to stabilize O/W emulsions. Physical properties and emulsifying capacity of CAMs with different CTAB concentration were investigated, which indicated emulsifying capacity of AMs could be extensively improved by CTAB. Improved stability against centrifugation (3000 rpm), pH value (2.0–8.0), and NaCl concentration (0–200 mM) was also reported in CAMs stabilized emulsions. Interfacial adsorption and morphology observation suggested that the interfacial activities of CAMs were benefited from CTAB complexing, and an interfacial layer could be observed on the surface of the CAMs stabilized oil droplets. In this work, even a slight amount of surfactant (0.4 mM, or 0.01456 wt% CTAB) could make remarkable improvement on the emulsifying performance of alginate microgels. However, excessive CTAB would result in over aggregation of AMs, which was not conducive to the emulsifying performance of CAMs. This study proposed that the surfactant complexing was a feasible strategy to improve the emulsifying performance of polysaccharide microgels.
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