一种益生菌来源的功能性低聚糖及其应用

By isolating and identifying Lactobacillus plantarum MA2 oligosaccharides, a composite hydrogel was prepared and Aβ40 aggregation was inhibited. This solved the gap in the application of functional sugars from lactic acid bacteria in hydrogels and the problem of Aβ protein aggregation, thus achieving effective prevention and treatment of diseases such as Alzheimer's disease.

CN117946288BActive Publication Date: 2026-07-17TIANJIN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN UNIV OF SCI & TECH
Filing Date
2023-12-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, functional sugars derived from lactic acid bacteria have not been used to prepare composite hydrogels, and the effect of probiotics on amyloid protein aggregation has not been reported. There is a lack of effective methods to inhibit and deaggregate Aβ protein aggregation, which affects the treatment and prevention of neurodegenerative diseases such as AD.

Method used

Oligosaccharides from Lactobacillus plantarum MA2 were isolated and identified for use in the preparation of composite hydrogels. They also acted as inhibitors and depolymerizing agents to inhibit Aβ40 aggregation and depolymerize already aggregated Aβ40 fibers. Simultaneously, they were compounded with gelling agents to form binary composite hydrogels, thereby enhancing gelling properties.

Benefits of technology

Lactobacillus plantarum MA2 oligosaccharides have high safety, can effectively inhibit and depolymerize Aβ40 aggregation, reduce cytotoxicity, and improve the hydrophilicity and biodegradability of composite hydrogels. They are suitable for the development of drugs, health products and functional foods, and provide a means of prevention and treatment for neurodegenerative diseases.

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Abstract

本发明属于食品技术、医药或保健品领域,尤其是涉及一种新型益生菌来源的功能性低聚糖及其应用。所述低聚糖为分离提取自植物乳杆菌MA2的胞外多糖,分子量为2232.9Da,包含甘露糖、半乳糖和葡萄糖,摩尔比为1.0:1.6:1.9。所述低聚糖能够抑制Aβ40聚集,降低其细胞毒性,且能解聚已形成的Aβ40纤维,可用于制备预防和治疗以淀粉样蛋白聚集及其构象异常为特征的疾病的新药、保健品或功能性食品。同时,所述低聚糖还可与其他凝胶剂复配制备二元水凝胶,增强其成胶性能,降低其刚性和失水性,提高其亲水性和生物降解性,为制备胶体类复合材料、功能性食品提供支撑。
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