Influence of oxygen supply on heptadecane mineralization by Pseudomonas nautica

Citation
P. Bonin et Jc. Bertrand, Influence of oxygen supply on heptadecane mineralization by Pseudomonas nautica, CHEMOSPHERE, 41(9), 2000, pp. 1321-1326
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
CHEMOSPHERE
ISSN journal
0045-6535 → ACNP
Volume
41
Issue
9
Year of publication
2000
Pages
1321 - 1326
Database
ISI
SICI code
0045-6535(200011)41:9<1321:IOOSOH>2.0.ZU;2-A
Abstract
The influence of different states of oxygen supply on heptadecane mineraliz ation has been investigated in resting cell suspensions of Pseudomonas naut ica. The rate of heptadecane biodegraded was constant for oxygen concentrat ions between 21% and 10% (v/v) (about 100% and 50% of air saturation, 230 a nd 110 mu M, respectively). A decline in biodegradation rates occurred for oxygen concentrations below 10% (about 50% of air saturation, 110 mu M) and biodegradation stopped with 0.21% oxygen (2.3 mu M). In the presence of 1% (11 mu M) of oxygen, no CO2 was produced, showing that complete mineralisa tion of heptadecane was blocked. (C) 2000 Elsevier Science Ltd. All rights reserved.