食品科学 ›› 2009, Vol. 30 ›› Issue (17 ): 141-144.doi: 10.7506/spkx1002-6630-200917033

• 基础研究 • 上一篇    下一篇

大粒车前子多糖及其铈配合物对磷酯键的水解作用

曾雯瑜,王远兴* ,刘志杏,朱影恬,殷军艺   

  1. 南昌大学食品科学与技术国家重点实验室,江西 南昌 330047
  • 收稿日期:2009-06-21 出版日期:2009-09-01 发布日期:2014-04-14
  • 通讯作者: 王远兴 E-mail:yuanxingwang@ncu.edu.cn

Hydrolysis of Phosphoester Bond by Plantago asiatica L. Crude Polysaccharide and Its Cerium Complex

ZENG Wen-yu,WANG Yuan-xing*,LIU Zhi-xing,ZHU Ying-tian,YIN Jun-yi   

  1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
  • Received:2009-06-21 Online:2009-09-01 Published:2014-04-14
  • Contact: WANG Yuan-xing E-mail:yuanxingwang@ncu.edu.cn

摘要:

以大粒车前子多糖(PLCP)为配体与四价铈(Ce4+)结合,形成水溶性的大粒车前子多糖铈配合物(Ce-PLCP),并就该配合物及其配体对磷酯键的水解作用进行比较研究。结果表明:Ce-PLCP 对对硝基苯磷酸二钠的表观水解速率常数达1.03 × 10-2 min-1,而PLCP 的表观水解速率常数仅为4.27 × 10-4 min-1;Ce-PLCP 对某些有机磷农药也有较好的水解效果,在48h 内对乐果、氧化乐果、毒死蜱及敌敌畏的水解率分别为74.97%、69.57%、46.11% 及44.17%,而PLCP 对有机磷农药的水解效果都不及Ce-PLCP。

关键词: 大粒车前子多糖, 稀土元素, 磷酯键, 水解, 有机磷农药

Abstract:

The Ce-PLCP complex of Plantago asiatica L. crude polysaccharide (PLCP) and cerium was prepared and characterized by means of UV-vis and fluorescence spectroscopy. The hydrolysis of phosphoester bond by PLCP and the Ce-PLCP complex was compared. The apparent rate constants of phosphoester bond hydrolysis were calculated to be 1.03 × 10-2 and 4.27 × 10-4 min-1, respectively. The complex could degrade four kinds of organophosphorus pesticides such as dimethoate, folimat, chloryrifos, and dichlorvos to different degrees and their degradation percentages were 74.97%, 69.57%, 46.11%, and 44.17%, respectively, while PLCP had lower degradation efficiency.

Key words: Plantago asiatica L. crude polysaccharide, rare earth elements, phosphoester bond, hydrolysis, organophosphorus pesticides

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