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Stability characteristics of O/W emulsions prepared using purified glycyrrhizin or a non-purified glycyrrhizin-rich extract from liquorice root (Glycyrrhiza glabra)
Colloids and Surfaces A: Physicochemical and Engineering Aspects ( IF 4.9 ) Pub Date : 2021-04-01 , DOI: 10.1016/j.colsurfa.2020.126006
Noamane Taarji , Meryem Bouhoute , Hakiki Melanie , Abdellatif Hafidi , Isao Kobayashi , Marcos Neves , Kenichi Tominaga , Hiroko Isoda , Mitsutoshi Nakajima

Abstract This study evaluated the stability characteristics of oil-in-water emulsions prepared using purified glycyrrhizin (PG) or a non-purified glycyrrhizin-rich extract from liquorice root (LRE) at equivalent glycyrrhizin concentrations (0.01−0.1%, w/w). PG-stabilized emulsions were sensitive to acidic pH ( 60 °C). These results indicate that the interfacial composition of the two studied systems was different although having similar glycyrrhizin concentration. PG-stabilized droplets consist of glycyrrhizin interfacial layers that are negatively charged and depend exclusively on electrostatic repulsion. LRE-stabilized droplets consist of complex interfacial layers due to the adsorption of various surface-active components, including glycyrrhizin and proteins.

中文翻译:

使用纯化的甘草甜素或来自甘草根 (Glycyrrhiza glabra) 的非纯化富含甘草甜素的提取物制备的 O/W 乳剂的稳定性特征

摘要 本研究评估了使用纯化的甘草酸 (PG) 或来自甘草根 (LRE) 的非纯化富含甘草酸的提取物制备的水包油乳剂的稳定性特征,甘草酸浓度相等 (0.01-0.1%, w/w) . PG 稳定的乳液对酸性 pH 值(60°C)敏感。这些结果表明,尽管具有相似的甘草甜素浓度,但两个研究系统的界面组成不同。PG 稳定的液滴由甘草甜素界面层组成,这些界面层带负电荷并且完全依赖于静电排斥。由于各种表面活性成分(包括甘草甜素和蛋白质)的吸附,LRE 稳定的液滴由复杂的界面层组成。
更新日期:2021-04-01
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