POSITIONAL SPECIFICITY OF KETODIENES FROM LINOLEIC-ACID AEROBICALLY FORMED BY LIPOXYGENASE ISOZYMES FROM KIDNEY BEAN AND PEA

被引:34
作者
SANZ, LC [1 ]
PEREZ, AG [1 ]
RIOS, JJ [1 ]
OLIAS, JM [1 ]
机构
[1] CSIC,INST GRASA & DERIVADOS,UEI FISIOL & TECNOL POSTRECOLECC,AVE PADRE GARCIA TEJERO 4,E-41012 SEVILLE,SPAIN
关键词
D O I
10.1021/jf00029a002
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
Two lipoxygenase isozymes (LOX-1 and LOX-2) from kidney bean and pea flours were purified by a combination of ammonium sulfate fractionation, gel filtration, and ion-exchange chromatography. Besides the production of hydroperoxides, LOX-1 catalyzed the aerobic formation of ketodienes. The positional and geometrical isomers were separated and quantified by HPLC. LOX-1 yielded approximately equal proportions of 9- and 13-hydroperoxides and the 9- and 13-ketodienes; LOX-2 formed mainly the 13-hydroperoxide isomer.
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页码:696 / 699
页数:4
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