Scholarlink

<p>Wall materials are crucial for microcapsule preparation, determining largely microencapsulation properties. Therefore, the interaction among wall materials properties, emulsion stability, and the as-prepared microcapsules properties should be investigated to improve the quality characteristics of microcapsules. In this study, we meticulously investigated the wettability of chitosan–octenyl succinic anhydride (OSA) starch complexes (Chi–OSA), the stability of <i>Nannochloropsis</i> oil (NO) Pickering emulsions stabilised by Chi–OSA, the properties of the NO microcapsules, and the correlation between these factors. Using the Pickering emulsion template, we successfully prepared NO microcapsules after being optimised through response surface methodology. Under optimised conditions (chitosan/OSA-starch mass ratio = 0.8, pH 5.4, 10% oil content), the NO microcapsules achieved a maximum encapsulation efficiency (EE) of 97.66%, with sizes ranging from 0.5 to 2.0&#xa0;μm. Furthermore, the correlation between the EE of NO microcapsules and the contact angle of Chi–OSA was linear under different pH values (R<sup>2</sup> = 0.98) while exponential under different chitosan/OSA-starch mass ratios (R<sup>2</sup> = 0.99). In addition, the as-prepared NO microcapsules showed excellent solubility, storage stability, and antioxidant activity. This study provides theoretical guidance for rational wall material selection and high-quality microcapsule preparation.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Fabrication of Nannochloropsis Oil Microcapsule Through Pickering Emulsion Templates: Effect on Wettability of Wall Material

  • 期刊论文

  • 发表日期：

    2026年1月16日

查看全文
  • Yu-Bin Su,
  • Senlin Feng,
  • Kaijiao Huang,
  • Jiawei Zhang,
  • Nengzhong Xie

摘要

Wall materials are crucial for microcapsule preparation, determining largely microencapsulation properties. Therefore, the interaction among wall materials properties, emulsion stability, and the as-prepared microcapsules properties should be investigated to improve the quality characteristics of microcapsules. In this study, we meticulously investigated the wettability of chitosan–octenyl succinic anhydride (OSA) starch complexes (Chi–OSA), the stability of Nannochloropsis oil (NO) Pickering emulsions stabilised by Chi–OSA, the properties of the NO microcapsules, and the correlation between these factors. Using the Pickering emulsion template, we successfully prepared NO microcapsules after being optimised through response surface methodology. Under optimised conditions (chitosan/OSA-starch mass ratio = 0.8, pH 5.4, 10% oil content), the NO microcapsules achieved a maximum encapsulation efficiency (EE) of 97.66%, with sizes ranging from 0.5 to 2.0 μm. Furthermore, the correlation between the EE of NO microcapsules and the contact angle of Chi–OSA was linear under different pH values (R2 = 0.98) while exponential under different chitosan/OSA-starch mass ratios (R2 = 0.99). In addition, the as-prepared NO microcapsules showed excellent solubility, storage stability, and antioxidant activity. This study provides theoretical guidance for rational wall material selection and high-quality microcapsule preparation.

Graphical Abstract