2000
DOI: 10.1046/j.1365-2672.2000.01104.x
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Role of rhamnolipid biosurfactants in the uptake and mineralization of hexadecane in Pseudomonas aeruginosa

Abstract: A study was undertaken to investigate the mechanisms for biosurfactant-enhanced hexadecane uptake into Pseudomonas aeruginosa. Two strains of Ps. aeruginosa were studied, one producing rhamnolipids (PG201) and the other rhamnolipid de®cient (UO299). Rhamnolipids produced by PG201 acted to increase the solubility of nhexadecane in the culture medium (from 1Á84 to 22Á76 mg l À1 ). Rates of 14 C-n-hexadecane uptake and mineralization were higher in PG201 than in UO299. However, the degree of difference was lower … Show more

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Cited by 181 publications
(113 citation statements)
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“…Pseudomonas is the best-known bacteria capable of using hydrocarbon as an energy source and producing biosurfactants [31][32][33]. Pseudomonas aeruginosa has been widely studied and is known to produce a glycolipid type of biosurfactant [34,35].…”
Section: Discussionmentioning
confidence: 99%
“…Pseudomonas is the best-known bacteria capable of using hydrocarbon as an energy source and producing biosurfactants [31][32][33]. Pseudomonas aeruginosa has been widely studied and is known to produce a glycolipid type of biosurfactant [34,35].…”
Section: Discussionmentioning
confidence: 99%
“…O índice de emulsificação consiste em um teste utilizado para confirmar a produção do biotensoativo no meio estudado, uma vez que já é conhecido que estas biomoléculas são capazes de modificar a hidrofobicidade da superfície celular além de promover a emulsão ou solubilização de soluções de óleo que antes seriam imiscíveis além disso tais biomoléculas são caracterizadas pela redução da tensão superficial. (Beal and Betts, 2000). Contudo há a possibilidade dessa biomolécula não ser produzida, mas mesmo assim apresente as demais propriedades, como a capacidade de formar emulsão.…”
Section: Ufscar -São Carlos -Sp 16 a 19 De Julho De 2017unclassified
“…strain RJGII-135 in the aqueous phase. Recent studies have proposed the presence of facilitated or active transport systems for uptake of different hydrophobic compounds such as toluene [96] and m-xylene [97], alkanes such as n-hexadecane [98][99][100] and dibenzothiophene [101]. Moreover, some long-chain fatty acids such as oleic acid are also known to be bound to bacterial cells and transported actively [102,103].…”
Section: Transport Of Pahs Into the Cellmentioning
confidence: 99%