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基烯纤维素聚合物作为有效的乳液稳定剂:分子重量和重叠度的影响

Diana Cholakova¹, Krastina Tsvetkova¹, Viara Yordanova¹

¹Department of Chemical and Pharmaceutical Engineering, Faculty of Chemistry and Pharmacy, Sofia University, 1 James Bourchier Ave., 1164 Sofia, Bulgaria.

Gels (Basel, Switzerland)

|February 25, 2025

概括

高分子量酸纤维素 (HPC) 有效地稳定了油在水中的乳液. 较低分子量HPC等级由于缺乏固态稳定性而无法形成稳定的乳液,影响食品和化品应用.

科学领域:

聚合物科学聚合物科学
合体和表面科学科学
食品科学食品科学食品科学

背景情况:

基基纤维素 (HPC) 是一种多用途的水溶性多糖,广泛应用于食品,化品和制药行业.
了解HPC特性与其在乳液中的性能之间的关系对于优化产品配方至关重要.

研究的目的:

描述六种不同分子量 (40-870 kDa) 的HPC等级的水溶液.
评估这些HPC等级在棕油 (PO) 和向日油 (SFO) 乳液中的乳化和稳定能力.
研究分子质量,度和温度对乳液性质的影响.

主要方法:

对HPC解决方案的表征,包括沉温度,界面张力 (IFT) 和质性质.
使用不同的HPC等级和度制备和分析PO和SFO乳液.
在各种条件下评估乳液稳定性,滴量大小和物理状态 (液体/凝).

主要成果:

乳液滴的大小与HPC度相关,聚合物分子质量和溶液粘度具有次要影响.
在所有HPC等级中估计有一致的表面活性分子 (1-2%) 分数.
稳定的乳液需要具有分子质量 (M) ≥400kDa的HPC聚合物,其度大约是临界重叠度 (c*) 的3.5倍.
用高分子量HPC形成的乳液具有高粘度或在PO度>40重%或25°C时凝结.
具有M < 90 kDa的HPC聚合物不能形成稳定的乳液,导致和凝聚.

结论:

用HPC稳定乳液的主要因素是表面活性分子的分数,而不是分子质量或溶液粘度.
稳定乳液的有效固体稳定需要高分子量HPC (≥400kDa) 在超临界度.
低分子量HPC (<90kDa) 不足以形成稳定的乳液,限制其在易产生和凝聚的系统中的应用.

关键词:

凝聚力凝聚力是一种凝聚力.乳液乳液是一种乳液.基烯基纤维素 (HPC) 是一种阶段过渡阶段过渡类风病学类风病学类风病学温度稳定的温度稳定性三甘油油是三甘油的油.

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