食品科学

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聚唾液酸和唾液酸寡糖的生物合成及其 在营养食品中的应用前景

郑志永1,2,詹晓北1,2,*,朱德强1,朱 莉2,吴剑荣1,2   

  1. 1.江南大学生物工程学院,糖化学与生物技术教育部重点实验室,江苏 无锡 214122;
    2.江苏瑞光生物科技有限公司,江苏 无锡 214125
  • 出版日期:2013-08-15 发布日期:2013-09-03
  • 通讯作者: 詹晓北
  • 基金资助:

    国家“863”计划项目(2012AA021505;2012AA021201); “十二五”国家科技支撑计划项目(2011BAD23B04);
    国家自然科学基金项目(31171640;31271888)

Biosynthesis of Polysialic Acid and Sialyl-oligosaccharides and Their Potential Applications in Nutraceuticals

ZHENG Zhi-yong1,2,ZHAN Xiao-bei1,2,*,ZHU De-qiang1,ZHU Li2,WU Jiang-rong1,2   

  1. 1. Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology,
    Jiangnan University, Wuxi 214122, China;2. Jiangsu Rayguang Biotech Co. Ltd., Wuxi 214125, China
  • Online:2013-08-15 Published:2013-09-03
  • Contact: ZHAN Xiao-bei

摘要:

聚唾液酸是唾液酸单体以α-2,8和(或)α-2,9糖苷键连接而成的同聚物,是神经细胞中神经黏附分子的重要组成部分,具备良好的生物相容性、非免疫原性和可降解性,在医药和食品领域有重要的应用前景。唾液酸寡糖存在于人脑细胞表面的神经节苷脂和糖蛋白分子上,与增强人体免疫力和记忆力有关。唾液酸寡糖在人乳中大量存在,在孕妇和婴幼儿营养食品中有潜在应用价值。本文综述聚唾液酸的微生物合成途径和生产工艺,唾液酸寡糖的合成方法,及它们在食品和健康领域中的潜在应用。

关键词: 聚唾液酸, 唾液酸, 唾液酸寡糖, 食品, 应用, 健康

Abstract:

Polysialic acid (PSA) is a linear homopolymer of α-2,8-linked (or α-2,9-linked) sialic acid residues that
covalently modify N-linked glycans on neural cell adhesion molecules. PSA has fine biocompatibility, non-immunogenicity
and biodegradable properties, and contributes to potential applications in the pharmaceutical and food industry. Sialyloligosaccharides
exist in brain ganglioside on the surface of neurons and glycoprotein molecules and have been proved
to be related to the improvement of human immunity and memory formation. Human milk contains abundant sialyloligosaccharides,
which have potential applications for the formulation of artificial milk for pregnant women and newborn
infants. In this review, we describe the current state of knowledge of polysialic acid biosynthetic pathway and its production
conditions. Sialyl-oligosaccharides biosynthesis and their potential applications in food and health fields are also discussed.

Key words: polysialic acid, sialic acid, sialyl-oligosaccharides, food, applications, human health

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