一种柠檬酸交联蛋白质-多糖复合凝聚纳米胶囊的制备方法

Nanocapsules were prepared by citric acid cross-linking of protein-polysaccharide composite coagulation, which solved the stability and biocompatibility problems of existing nanocapsules and achieved nanocapsules with high encapsulation efficiency and good sustained-release performance, thus broadening their application in food and drug delivery.

CN116983918BActive Publication Date: 2026-07-17JIANGNAN UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGNAN UNIV
Filing Date
2023-06-05
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing methods for preparing nanocapsules suffer from poor stability and biocompatibility issues, and the formation conditions are strict, making it difficult to efficiently prepare nanocapsules with good biocompatibility.

Method used

Citric acid was used as a natural cross-linking agent to prepare protein-polysaccharide complex aggregates through a composite coagulation method, forming citric acid-crosslinked protein-polysaccharide complex nanocapsules. The nanocapsules were formed by utilizing the electrostatic interaction between proteins and polysaccharides.

Benefits of technology

The prepared nanocapsules have a particle size of approximately 150-200 nm, an encapsulation efficiency of up to 69%, good heat resistance, slow-release core material, good biocompatibility, and are easy to operate, making them widely applicable in the fields of food and drug delivery.

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Abstract

本发明公开了一种柠檬酸交联蛋白质‑多糖复合凝聚纳米胶囊的制备方法,属于微胶囊包埋技术领域。本发明首先将芯材和一种蛋白质溶液混合,乳化后制得O / W型乳状液,再加入多糖溶液,通过调节pH,蛋白质和多糖在静电相互作用下发生复合凝聚反应。在体系中加入柠檬酸,其与蛋白质通过氢键作用发生交联反应,从而制得纳米胶囊分散液,该分散液冷冻干燥后得到纳米胶囊粉末。本发明制备过程温和安全、高效简单,生物相容性好,适用于大规模生产。
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