PubAg

Main content area

You searched for: Subject culture media Remove constraint Subject: culture media Subject infrared spectroscopy Remove constraint Subject: infrared spectroscopy Subject biosurfactants Remove constraint Subject: biosurfactants
Start Over

Search

3  Search Results

1 - 3 of 3
Number of results to display per page

Search Results

1. Isolation of thermotolerant, halotolerant, facultative biosurfactant-producing bacteria

Author:
Ghojavand, H.; Vahabzadeh, F.; Mehranian, M.; Radmehr, M.; Shahraki, Kh. A.; Zolfagharian, F.; Emadi, M. A.; Roayaei, E.
Source:
Applied microbiology and biotechnology 2008 v.80 no.6 pp. 1073-1085
ISSN:
0175-7598
Subject:
Bacillus subtilis; DNA; bacteria; biosurfactants; culture media; genes; heat tolerance; industry; infrared spectroscopy; nuclear magnetic resonance spectroscopy; oil fields; oils; petroleum; salinity; salt tolerance; sodium chloride; surface tension; temperature; thin layer chromatography
Abstract:
... Several facultative bacterial strains tolerant to high temperature and salinity were isolated from the oil reservoir brines of an Iranian oil field (Masjed-I Soleyman). Some of these isolates were able to grow up to 60°C and at high concentration of NaCl (15% w/v). One of the isolates grew at 40°C, while it was able to grow at 15% w/v NaCl. Tolerances to NaCl levels decreased as the growth tempera ...
DOI:
10.1007/s00253-008-1570-7
PubMed:
18682926

2. Single step concomitant concentration, purification and characterization of two families of lipopeptides of marine origin

Author:
Sivapathasekaran, C.; Mukherjee, Soumen; Sen, Ramkrishna; Bhattacharya, Biyash; Samanta, Ramapati
Source:
Bioprocess and biosystems engineering 2011 v.34 no.3 pp. 339-346
ISSN:
1615-7591
Subject:
bacteria; biosurfactants; culture media; desorption; infrared spectroscopy; ionization; lipopeptides; micelles; spectral analysis; ultrafiltration
Abstract:
... The extracellular biosurfactant product secreted by a marine bacterium was concentrated and purified directly from the fermentation broth in a single step by ultrafiltration (UF) employing YM 30 kDa (UF-I) and Omega 10 kDa (UF-II) polyethersulfone membranes. The optimum operating pressure required for both membranes, UF-I and UF-II, were found to be 30 and 35 psi, respectively. The biosurfactant f ...
DOI:
10.1007/s00449-010-0476-9

3. Characterization of a lipopeptide biosurfactant produced by a crude-oil-emulsifying Bacillus sp. I-15

Author:
Ismail, Wael; Al-Rowaihi, Israa S.; Al-Humam, Abdulmohsen A.; Hamza, Riyad Y.; El Nayal, Ashraf M.; Bououdina, Mohamed
Source:
International Biodeterioration & Biodegradation 2013 v.84 pp. 168-178
ISSN:
0964-8305
Subject:
Bacillus (bacteria); RNA; bacteria; biosurfactants; carbon; clones; culture media; emulsifiers; glucose; infrared spectroscopy; lipopeptides; operon; petroleum; ribosomal DNA; surface tension; thin layer chromatography
Abstract:
... Petroleum-polluted environmental samples were collected to isolate and characterize biosurfactant-producing bacteria. Culturing of the collected samples in LB-broth and enrichments in chemically defined medium (CDM) with various carbon sources yielded 51 strains, some of which produced biosurfactants/bioemulsifiers when challenged with crude oil as a sole carbon source. The I-15 isolate, a Gram-po ...
DOI:
10.1016/j.ibiod.2012.04.017