High-embedding enterobacterium composite microcapsule and preparation process thereof

By using a modified sodium alginate and chitosan composite microcapsule preparation process, the problems of low probiotic survival rate and uncontrollable release were solved, achieving high encapsulation rate and intestinal targeted protection, thus improving the clinical efficacy of probiotic preparations.

CN122398757APending Publication Date: 2026-07-17NANJING HEALSOUL LIFE SCI & TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING HEALSOUL LIFE SCI & TECH CO LTD
Filing Date
2026-05-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing microcapsule preparation technologies suffer from problems such as low probiotic survival rate, poor acid resistance, and uncontrollable release, making it difficult to achieve high encapsulation rates and targeted intestinal protection.

Method used

A composite microcapsule preparation process using modified sodium alginate and chitosan was adopted. Through oxidation reaction and amidation grafting modification, combined with endogenous gel and polyelectrolyte composite membrane, a dense core-shell structure was formed. The high encapsulation of bacteria and intestinal-targeted release were achieved by utilizing electrostatic composite membrane and nano-montmorillonite physical barrier.

Benefits of technology

It significantly improves the encapsulation rate and survival rate of probiotics, enhances the acid resistance and intestinal targeting of the composite microcapsules, and ensures stability in gastric juice and precise release in the intestine.

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Abstract

本发明涉及复合微胶囊技术领域,具体为一种高包埋肠菌复合微胶囊及其制备工艺,包括以下具体步骤:步骤1肠菌在培养基中活化、离心、洗涤并重悬,制得菌悬液;步骤2在去离子水中依次加入改性海藻酸钠、羧甲基纤维素钠、果胶、碳酸钙、聚乙二醇和菌悬液,混合制成水相;将吐温80与食用花生油混合制成油相;步骤3在搅拌下将水相滴入油相形成乳液,加入含冰醋酸的食用油搅拌,再以氯化钙溶液固化,静置后无菌生理盐水洗涤,得到微胶囊;步骤4将改性壳聚糖、纳米蒙脱土溶于醋酸钠‑乙酸缓冲液并调节pH,得到混合溶液;将微胶囊加入混合溶液中搅拌、静置,无菌生理盐水冲洗,得到高包埋肠菌复合微胶囊。
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