Record Details

Production of an antioxidant naphthoquinone pigment by Comamonas testosteroni during growth on naphthalene

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Production of an antioxidant naphthoquinone pigment by Comamonas testosteroni during growth on naphthalene
 
Creator Patel, K C
Patel, M A
Chauhan, Kishor
Anto, Hema
Trivedi, Ujjval
 
Subject Antioxidant
FRAP assay
Naphthalene
Naphthoquinone
Red pigment
 
Description 605-610
A cell bound red pigment was synthesized by an indigenous petroleum contaminated soil isolate, Comamonas testosteroni,
during growth on naphthalene as a sole source of carbon and energy. Ferric ion supplementation in the medium inhibited the
pigment production. UV-visible spectrum of the pigment in ethanol showed absorption maxima at 251, 289, 318, 328, 333 and
362 nm and a broad peak at 479 nm. Ethanolic solution of pigment showed development of crystals on storage. Chemical
analysis, FTIR and NMR spectroscopy studies revealed it as a novel isoprenoid quinone, a 2-methyl naphthoquinone with
phytyl side chain. Ferric reducing/antioxidant power assay proved its in vitro antioxidant activity. Both pigment and ferric ions
are proposed to have protective role against superoxide radical generated through intense activity of flavin containing naphthalene
dioxygenase during naphthalene metabolism.
 
Date 2008-05-13T11:01:45Z
2008-05-13T11:01:45Z
2007-08
 
Type Article
 
Identifier 0022-4456
http://hdl.handle.net/123456789/1289
 
Language en_US
 
Publisher CSIR
 
Source JSIR Vol.66(8) [August 2007]