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

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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

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

CLC Number: