Rhamnolipid biosurfactant production by Pseudomonas aeruginosa strain KVD-HR42 isolated from oil contaminated mangrove sediments

The chemotactic properties of an oil-degrading Pseudomonas aeruginosa strain 6-1B, isolated from Daqing Oilfield, China, have been investigated. The strain 6-1B could grow well in crude oil with a specific rhamnolipid biosurfactant production. Furthermore, it exhibits chemotaxis toward various substrates, including glycine, glycerol, glucose, and sucrose. Compared with another oil-degrading strain, T7-2, the strain 6-1B presented a better chemotactic response towards crude oil and its vital component, n-alkenes. Based on the observed distribution of the strain 6-1B cells around the oil droplet in the chemotactic assays, the potential chemotaxis process of bacteria toward crude oil could be summarized in the following steps: searching, moving and consuming.

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Influence of Nitrogen and Phosphorus on Rhamnolipid Biosurfactant Production by Pseudomonas aeruginosa DS10-129 using Glycerol as Carbon Source

Biotechnology(Faisalabad) ◽

10.3923/biotech.2011.183.189 ◽

2011 ◽

Vol 10 (2) ◽

pp. 183-189 ◽

Cited By ~ 10

Author(s):

Saher Mehdi ◽

Jesse S. Dondapati ◽

Pattanathu K.S.M. Rahman

Keyword(s):

Pseudomonas Aeruginosa ◽

Carbon Source ◽

Biosurfactant Production ◽

Nitrogen And Phosphorus ◽

Rhamnolipid Biosurfactant

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Biosurfactant Production by Pseudomonas aeruginosa and Burkholderia gladioli Isolated from Mangrove Sediments Using Alternative Substrates

Orbital - The Electronic Journal of Chemistry ◽

10.17807/orbital.v8i5.771 ◽

2016 ◽

Vol 8 (5) ◽

Cited By ~ 1

Author(s):

Karla Maria Catter ◽

Danielle Ferreira de Oliveira ◽

Oscarina Viana de Sousa ◽

Luciana Rocha Barros Gonçalves ◽

Regine Helena Silva dos Fernandes Vieira ◽

...

Keyword(s):

Pseudomonas Aeruginosa ◽

Biosurfactant Production ◽

Mangrove Sediments ◽

Alternative Substrates ◽

Burkholderia Gladioli

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Oil Wastes as Unconventional Substrates for Rhamnolipid Biosurfactant Production by Pseudomonas aeruginosa LBI

Biotechnology Progress ◽

10.1021/bp050198x ◽

2005 ◽

Vol 21 (5) ◽

pp. 1562-1566 ◽

Cited By ~ 122

Author(s):

M. Nitschke ◽

S.G.V.A.O. Costa ◽

R. Haddad ◽

L.A.G. Goncalves ◽

M.N. Eberlin ◽

...

Keyword(s):

Pseudomonas Aeruginosa ◽

Biosurfactant Production ◽

Rhamnolipid Biosurfactant

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Production of Rhamnolipid Biosurfactant from Fed Batch Culture by Pseudomonas aeruginosa using Multiple Substrates

Current Nutrition & Food Science ◽

10.2174/1573401314666181107100127 ◽

2020 ◽

Vol 16 (6) ◽

pp. 928-933

Author(s):

Jujjavarapu S. Eswari

Keyword(s):

Pseudomonas Aeruginosa ◽

Batch Process ◽

Time Interval ◽

Fed Batch ◽

Multiple Substrates ◽

Surface Active Agents ◽

Limiting Nutrients ◽

Limiting Nutrient ◽

Surface Active ◽

Rhamnolipid Biosurfactant

Objective: Biosurfactants are the surface active agents which are used for the reduction of surface and interfacial tensions of liquids. Rhamnolipids are the surfactants produced by Pseudomonas aeruginosa. It requires minimum nutrition for its growth as it can also grow in distilled water. The rhamnolipids produced by Pseudomonas aeruginosa are extra-cellular glycolipids consisting of L-rhamnose and 3-hydroxyalkanoic acid. Methods: The fed-batch method for the rhamnolipid production is considered in this study to know the influence of the carbon, nitrogen, phosphorous substrates as growth-limiting nutrients. Pulse feeding is employed for limiting nutrient addition at particular time interval to obtain maximum rhamnolipid formation from Pseudomonas aeruginosa compared with the batch process. Results: Out of 3 fed batch strategies constant glucose fed batch strategy shows best and gave maximum rhamnolipid concentration of 0.134 g/l.

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