Potato tubers exhibit both homolytic and heterolytic hydroperoxide fatty acid-cleaving activities

Citation
Ml. Fauconnier et al., Potato tubers exhibit both homolytic and heterolytic hydroperoxide fatty acid-cleaving activities, BIOCH SOC T, 28, 2000, pp. 853-855
Citations number
11
Categorie Soggetti
Biochemistry & Biophysics
Journal title
BIOCHEMICAL SOCIETY TRANSACTIONS
ISSN journal
03005127 → ACNP
Volume
28
Year of publication
2000
Part
6
Pages
853 - 855
Database
ISI
SICI code
0300-5127(200012)28:<853:PTEBHA>2.0.ZU;2-L
Abstract
The action of a crude potato-tuber extract on 9-and 13-hydroperoxides of li noleic and linolenic acids was investigated. HPLC analysis revealed that 50 % of the 9-hydroperoxide isomers and almost all the 13-hydroperoxide isomer s were rapidly enzymically metabolized. No degradation of fatty acid hydrop eroxides was observed with a thermally denatured enzymic extract. GC-MS ide ntification of the volatiles formed by the reaction revealed that no volati les were detected from the 9-hydroperoxide isomers, whereas 13-hydroperoxid e of linolenic acid was cleaved into (Z)-3-hexenal, pentenols or dimers of pentene.