【摘要】 目的:探讨不同提取工艺硫酸软骨素体外抗氧化活性。方法:分别采用木瓜蛋白酶、NaOH-胰酶提取高/低分子量硫酸软骨素(ChS),比较DEAE-52和DEAE-SepharoseFF分离纯化多糖的效果。结果:木瓜蛋白酶、NaOH-胰酶提取率为别为(29.51±0.89)和(21.23±1.65),DEAE-SepharoseFF分离纯化效果好于DEAE-52,DEAE-52纯化两种方式提取的粗多糖得到两种组分,而DEAE-SepharoseFF分离纯化木瓜蛋白酶提取的多糖得到4种组分,NaOH-胰酶提取的多糖得到3种组分,HPGPC显示木瓜蛋白酶、NaOH-胰酶提取的硫酸软骨素相对分子量分别为43569Da,25773Da,前者糖链分子量完整,其DPPH.、.OH和O2-.清除活性优于后者。结论:硫酸软骨素抗氧化活性可能与提取方式、分子量,分子构成及构型等相关。更多还原

【Abstract】 AIM: To explore in vitro antioxidan activity of ChS extracted by two enzyme hydrolyses. METHODS: Papain,sodium hydroxide-trypsin were used to extract chondroint sulfate, respectively,DEAE-52 and DEAE-Sepharose FF ion exchange column chromatography were used to isolate and purify crude polysaccharide.RESULTS: The results showed that extraction rate of papain,sodium hydroxide-trypsin for chS was （39.51± 0.89 ）%,and （21.23±1.65）%,respectively.DEAE-Sepharose FF was better than DEAE-52 for the isolation and purification of crude polysaccharide,two components were separated and purified from crude polysaccharide extracted by two extraction methods.Four components were separated and purified from crude polysaccharide extracted by papain on the DEAE-Sepharose FF.Three components were obtained by sodium hydroxide-trypsin.Molecular weight of ChS extracted by papain,sodium hydroxide-trypsin was 43569 Da,25773 Da,respectively.The DPPH·, ·OHand O^-₂· scavenging activity of the former was better than those of the latter. CONCLUSION: The study shows that the function of the ChS is probably related to extration mode,molecular weight and conformation.更多还原