MECHANISM OF FORMATION OF VOLATILE COMPOUNDS BY THERMAL-DEGRADATION OF CAROTENOIDS IN AQUEOUS-MEDIUM .2. LYCOPENE DEGRADATION

被引：41

作者：

KANASAWUD, P ^{[1
]}

CROUZET, JC ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2,CTR GENIE & TECHNOL ALIMENTAIRES,F-34060 MONTPELLIER,FRANCE

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 1990年 / 38卷 / 05期

关键词：

D O I：

10.1021/jf00095a018

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

During heat treatment of lycopene suspension in water, several volatile compounds are produced in an oxidative process. Beside 2-methyl-2-hepten-6-one and citral, previously characterized as a degradation products of lycopene, 5-hexen-2-one, hexane-2,5-dione, 6-methyl-3,5-heptadien-2-one, and geranyl acetate were identified and pseudoionone was tentatively identified by GC-MS. The temperature effect and the kinetic study of nonvolatile compound formation show that during the degradation process all-trans-lycopene is partially isomerized to the cis-trans isomer, which may considered an end reaction product. The same studies relative to volatiles show that the main compounds isolated, 2-methyl-2-hepten-6-one, geranial, and pseudoionone, arise from all-trans-lycopene. Subsequent degradation of this latter compound gives 6-methyl-3,5-heptadien-2-one, and geranial is isomerized to neral. © 1990, American Chemical Society. All rights reserved.

引用

页码：1238 / 1242

页数：5

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