Abstract:

Nostoc polysaccharides are the main supporting matrix of the edible Nostoc colonies and key bioactive components. They have a number of bioactivities, such as immunomodulation, anticancer and antiviral activities, and play important roles in protecting Nostoc cells from physical and biological stresses. This paper reviewed the progress of isolation, structure and bioactivity of Nostoc polysaccharides, and prospected their potential applications in food, pharmaceutical and cosmetic industries.

Key words: Nostoc polysaccharides, structure, bioactivity, application

摘要：

念珠藻多糖是念珠藻群体的主要支撑物质，也是念珠藻的主要生物活性成分之一。念珠藻多糖在增强机体免疫、抗肿瘤、抗病毒等方面有显著活性，同时念珠藻胞外多糖对念珠藻本身在抗逆境等方面具有良好的保护作用。综述了念珠藻多糖的提取分离、结构与生物活性三方面对念珠藻多糖的研究进展，并在此基础上展望了对念珠藻多糖在医药保健、日用化工和环境保护等领域的开发潜力和应用前景。

关键词: 念珠藻多糖;结构;生物活性;应用