天然产物研究与开发 ›› 2019, Vol. 31 ›› Issue (1): 116-121.doi: 10.16333/j.1001-6880.2019.1.018

• 开发研究 • 上一篇    下一篇

海藻多糖的单糖组成对体外抗氧化活性的影响

冯书珍,卢宇凤,刘南英,徐畅,谢广燕,冯学珍*   

  1. 广西科技大学,柳州 545006
  • 出版日期:2019-01-28 发布日期:2019-01-28
  • 基金资助:

    广西高校中青年教师基础能力提升项目(2017KY036 3);国家级大学生创新创业训练计划(201710594051);自然科学培育项目(0318101307)

Effect of monosaccharide composition on antioxidant activity of algal polysaccharides

FENG Shu-zhen,LU Yu-feng,LIU Nan-ying,XU Chang,XIE Guang-yan,FENG Xue-zhen*   

  1. Guangxi University of Science and Technology, Liuzhou 545006, China
  • Online:2019-01-28 Published:2019-01-28

摘要: 比较广西北部湾石莼(Ulva lactuca L.)、海带(Laminaria japonica)、裙带菜(Undaria pinnatifida Suringar)、紫菜(Porphyra)的单糖组成及抗氧化活性的差异,揭示多糖结构与其体外抗氧化活性的关系。利用PMP柱前衍生化HPLC分析海藻多糖的单糖组成,采用羟自由基清除试验、超氧阴离子自由基清除试验及DPPH自由基清除试验指征其体外抗氧化活性,结果表明,4种海藻多糖的单糖组成在主成分空间分布离散,石莼及紫菜主要由葡萄糖组成,海带主要由甘露糖组成,裙带菜则主要由半乳糖组成;其体外抗氧化活性存在显著差异,裙带菜多糖对DPPH 的清除能力(半抑制浓度IC50值为0.56±0.02 mg/mL)显著高于其他3种海藻多糖;石莼、裙带菜与海带对羟自由基均有较强的清除活性,而紫菜多糖对羟自由基的清除能力较差(IC50值为26.59±0.98 mg/mL);石莼与裙带菜对超氧阴离子的清除活性较强,显著高于海带与紫菜,其中石莼显著高于裙带菜,IC50值分别为1.61±0.17、2.73±0.06 mg/mL。相关性分析及冗余分析结果表明,对抗氧化活性影响较为显著的因子为葡萄糖(Glc)、核糖(Rib)、木糖(Xyl)(P<0.01)。

关键词: 海藻, 多糖提取, 单糖组成, 抗氧化性

Abstract: To discuss the difference in monosaccharide composition and antioxidant activity among different algal polysaccharides,we analyzed the Ulva lactuca L.,Laminaria japonica,Undaria pinnatifida Suringar and Porphyra of Beibu Gulf in Guangxi.The monosaccharide compositions were analyzed by HPLC applied to PMP precolumn derivation.The antioxidant activity of polysaccharides was indicated by the scavenging DPPH,hydroxyl (·OH-),and superoxide anions (O2) activity from algae polysaccharide.Results indicated that four algal polysaccharides were significantly different in monosaccharide composition by PCA analysis.Ulva lactuca L. and Porphyra were mainly composed by Glucosec,Laminaria japonica and Undaria pinnatifida Suringar was composed by Mannoseand Galactose,respectively.The scavenging capacity of DPPH of Undaria pinnatifida Suringar (the hemi-inhibitory concentration IC50 was 0.56±0.02 mg/mL) was significantly higher than that of Ulva lactuca L.,Laminaria japonica and Porphyra.The scavenging ability for (·OH-) of Porphyra polysaccharide (IC50 was 26.59±0.98 mg/mL) was significantly lower than that of Ulva lactuca L.,Laminaria japonica,Undaria pinnatifida and Suringar.According to the scavenging superoxide anions (O2)  activity,Ulva lactuca L. was significantly higher than Undaria pinnatifida Suringar,and the value of IC50 of Ulva lactuca L. and Undaria pinnatifida Suringar were 1.61±0.17 mg/mL and 2.73±0.06 mg/mL,respectively.Besides,Pearson correlation analysis and redundancy analysis both showed that glucose (Glc),ribose (Rib),xylose (Xyl) significantly influenced the antioxidant activity of algae polysaccharide (P<0.01).

Key words: algae, polysaccharide extraction, monosaccharide composition, antioxidant activity

中图分类号: 

Q946