|Table of Contents|

THE BLEACHING PERFORMANCE OF THE PRODUCT OBTAINED FROM HYDROPEROXIDATION OF LINOLEIC ACID CATALYZED BY SOYBEEN-LIPOXYGENASE(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2007年02期
Page:
235-239
Research Field:
Publishing date:

Info

Title:
THE BLEACHING PERFORMANCE OF THE PRODUCT OBTAINED FROM HYDROPEROXIDATION OF LINOLEIC ACID CATALYZED BY SOYBEEN-LIPOXYGENASE
Author(s):
CAI Yan; FANG Yun; MENG Jun
School of Chemical and Material Engineering,Southern Yangtze University,Wuxi 214122
Keywords:
Soybeanlipoxygenase; Hydroperoxide; Linoleic acid; Bleach; Methylene blue
PACS:
Q814.2
DOI:
10.3969/j.issn.1000-9841.2007.02.024
Abstract:
Lipoxygenase obtained from soybeans can catalyze the oxidation of linoleic acid to linoleic acid hydroperoxide (LA-HPOD)，the latter is a new type of soybean oil-derived multifunctional surfactant having both bleaching and washing performances at lower temperature . In this paper,the thermal stability of LA-HPOD,as well as its bleaching effect on methylene blue was investigated. LA-HPOD decomposed completely at 120 oC but kept stable at 60 oC. The bleaching rate of methylene blue reached nearly 100% at 60 oC,pH11 in 0.5 h,while 40% at 30 oC in 30min. Comparing with commonly used sodium perborate and sodium percarbonate,LA-HPOD performed the best on bleaching methylene blue. The bleaching of methylene blue by LA-HPOD follows second order reaction kinetics.

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Last Update: 2014-10-21