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

An Indigenous Biosurfactant Producing Burkholderia cepacia with High Emulsification Potential towards Crude Oil

“…In recent years, several studies have shown that a number of Burkholderia species such as Burkholderia thailandensis [34,35], Burkholderia glumae [36], Burkholderia kururiensis [37], Burkholderia plantarii [38], and Burkholderia gladioli [39] were able to produce biosurfactant. However, the ability of Burkholderia cepacia to produce a biosurfactant was not sufficiently documented in the literature.…”

“…Plant-derived oils have been documented as an excellent carbon substrates for biosurfactant production by Pseudomonas aeruginosa [45,46]. The Burkholderia gladioli culture produced most biosurfactant when enriched with 5% corn oil [39]. Burkholderia thailandensis produced a series of long chain rhamnolipids when grown in canola oil [35].…”

“…The additional CH2 groups were found to render the molecule more hydrophobic and facilitate micelle formation [47]. The ability of Pseudomonas aeruginosa to reduce the surface tension to 28.1 mK/m with maximum emulsification activity of 70% in culture medium enriched with 2% corn oil was reported [39]. Whereas, Burkholderia gladioli was found to reduce the surface tension to 45.4 mK/m with maximum emulsification activity of 69% in culture medium enriched with 5% corn oil.…”

Food waste as a source of value‐added chemicals and materials: a biorefinery perspective

“…Pseudomonas aeruginosa and Burkholderia gladioli can produce rhamnolipids using waste corn and sunflower oil as carbon source. The product from the former strain showed better results by lowering the surface tension of the culture medium from 69 to 28 mN m À1 and forming more stable emulsions (Catter et al, 2016). Li et al undertook the production of lipopeptides feeding soya bean oil waste to Bacillus pseudomycoides BS6.…”