摘要
目的琼二糖多聚体具有多种生物活性 ,建立不同水解模式下的琼二糖聚合体的定量分析方法具有重要意义。方法将降解产物用Sephadex柱纯化得到聚合度为 2～ 10的琼寡糖 ,对每一种寡糖进行α 萘胺衍生化后采用高效液相色谱分析 ,并利用此方法对 4种水解模式 (盐酸、柠檬酸、固态酸及羟基自由基降解 )的产物进行分析。结果各种聚合度的寡糖衍生物在HPLC上得到了很好的分离 ,最低检测限达到 0 .1～ 2 μg·mL 1。应用固态酸降解琼胶 ,其产物中的寡糖含量可达 33.2 % ,其中琼二糖含量高达 5 7.8% ;盐酸降解产物较为分散 ,包含 2～ 10糖 ;柠檬酸降解产率过低 ;羟基自由基降解产物过杂。结论建立的琼胶寡糖定量方法可有效地应用于寡糖制备分析中。
Objective Since the discovery of multiple bioactivities of agarobiose oligomers, the establishment of quantitative analysis of agarobiose oligomers obtained under different hydrolysis modes would be of much importance. Methods Agarobiose oligomers ranged from biose, tetraose, hexaose, octaose, to decaose were isolated and purified by gel chromatography on Sephadex column. The agarobiose oligomers were separated in RP-HPLC after introducing α-naphthylamine into compounds. Results Each oligomer could be quantified with good linearity and the lowest detection limit reached 0.1～2 μg·mL -1. The chromatograms profiles under different hydrolysis modes(HCl, citric acid, solid acid, and hydroxyl radical degradation)showed that the content of agarobiose could reach more than 57.8 % using solid acid hydrolysis with best yield of 33.2 % . While HCl could degrade agar into a series of agaro-oligosaccharides from biose to decaose. The yield of oligosaccharides was low if hydrated by citric acid. The method of Fenton degradation could increase the speed of hydrolysis, but the products were more complex. Conclusion The method established here could be useful for analysis of hydrolysates of oligomers under different hydrolysis modes.
出处
《中国海洋药物》
CAS
CSCD
2004年第5期30-34,共5页
Chinese Journal of Marine Drugs
基金
国家 8 6 3计划 (2 0 0 3AA2Z35 11)
浙江省科技计划项目 (2 0 0 3C2 30 30 )联合资助课题
