Wide pH, Adaptable High Internal Phase Pickering Emulsion Stabilized by a Crude Polysaccharide from Thesium chinense Turcz.

IF 4.2 2区化学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Molecules Pub Date : 2024-09-11 DOI:10.3390/molecules29184312

Borong Ling, Lijun Shao, Huicong Jiang, Shufang Wu

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Abstract

The ultrasound-assisted extraction conditions of Thesium chinense Turcz. crude polysaccharide (TTP) were optimized, and a TTP sample with a yield of 11.9% was obtained. TTP demonstrated the ability to stabilize high-internal-phase oil-in-water emulsions with an oil phase volume reaching up to 80%. Additionally, the emulsions stabilized by TTP were examined across different pH levels, ionic strengths, and temperatures. The results indicated that the emulsions stabilized by TTP exhibited stability over a wide pH range of 1–11. The emulsion remained stable under ionic strengths of 0–500 mM and temperatures of 4–55 °C. The microstructure of the emulsions was observed using confocal laser scanning microscopy, and the stabilization mechanism of the emulsion was hypothesized. Soluble polysaccharides formed a network structure in the continuous phase, and the insoluble polysaccharides dispersed in the continuous phase, acting as a bridge structure, which worked together to prevent oil droplet aggregation. This research was significant for developing a new food-grade emulsifier with a wide pH range of applicability.

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用麝香草粗多糖稳定的宽 pH 值、适应性强的高内相皮克林乳液

优化了千层塔粗多糖（TTP）的超声辅助萃取条件，获得了收率为11.9%的TTP样品。TTP 能够稳定油相体积高达 80% 的高内相水包油乳液。此外，还在不同的 pH 值、离子强度和温度下对 TTP 稳定的乳液进行了检测。结果表明，经 TTP 稳定的乳液在 1-11 宽 pH 值范围内均表现出稳定性。在离子强度为 0-500 mM 和温度为 4-55 °C 时，乳液仍保持稳定。使用激光共聚焦扫描显微镜观察了乳液的微观结构，并假设了乳液的稳定机制。可溶性多糖在连续相中形成网络结构，而不溶性多糖分散在连续相中，起到桥梁结构的作用，共同防止油滴聚集。这项研究对于开发一种适用pH值范围广的新型食品级乳化剂具有重要意义。

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来源期刊

Molecules 化学-有机化学

CiteScore

7.40

自引率

8.70%

发文量

7524

审稿时长

1.4 months

期刊介绍： Molecules (ISSN 1420-3049, CODEN: MOLEFW) is an open access journal of synthetic organic chemistry and natural product chemistry. All articles are peer-reviewed and published continously upon acceptance. Molecules is published by MDPI, Basel, Switzerland. Our aim is to encourage chemists to publish as much as possible their experimental detail, particularly synthetic procedures and characterization information. There is no restriction on the length of the experimental section. In addition, availability of compound samples is published and considered as important information. Authors are encouraged to register or deposit their chemical samples through the non-profit international organization Molecular Diversity Preservation International (MDPI). Molecules has been launched in 1996 to preserve and exploit molecular diversity of both, chemical information and chemical substances.