Biosurfactant Production by Cultivation of Bacillus atrophaeus ATCC 9372 in Semidefined Glucose/Casein-Based Media

Performance of a biosurfactant produced by Bacillus subtilis LAMI005 on the formation of oil / biosurfactant / water emulsion: study of the phase behaviour of emulsified systems

“…Kim et al (1997) studied the production of biosurfactant by Bacillus subtilis C9 in a mineral and glucose medium and reported that the formation of product was associated with cellular growth. Neves et al (2007) also observed the connection between the specific growth rate (μ x ), the rate of substrate consumption (μ s ) and the rate of biosurfactant formation (μ p ) during the cultivation of Bacillus atrophaeus ATCC 9372 in 2.5 g/L of glucose and 10.0 g/L of casein. Desai and Banat (1997) used Bacillus sp.…”

Kinetics of Surfactin Production by Bacillus subtilis in a 5 L Stirred-tank Bioreactor

“…Considerable amount of glucose was consumed by both strains when the P o increased to P max during the course of fermentation, when the μ max for both strains was attained. Alternatively, surfactin production can be evaluated through the yield of biosurfactant on cell mass (Y p/x ) (de Oliveira et al 2013), which is a useful volumeindependent parameter for scaling up the bioprocess (Neves et al 2007). The Y p/x obtained was 0.178 and 0.119 g/g for B. subtilis MSH1 and B. subtilis ATCC 21332, respectively.…”

Crude glycerol from biodiesel industry as substrate for biosurfactant production by Bacillus subtilis ATCC 6633

“…They are proteins with detergent, emulsifier, and surfactant power to lower the surface tension of water and other solvents, and have potential applications in environmental uses such as organic pollutants treatment and oil recovery (Neves et al 2007). Microbial surfactants are produced primarily by the bacteria.…”

“…However, they are also produced by the yeasts and fungi (Fiechter 1992). The production of biosurfactants is often related to the consumption of hydrocarbons, including oily residues, and occurs during the exponential cellular growth (Neves et al 2007). But they can also be produced from the sugars (sucrose, glucose and lactose), glycerol, vegetable oils, or starch as carbon sources (Cirigliano and Carman 1984;GuerraSantos et al 1984;Makkar and Cameotra 2002;Reis et al 2004;Amaral et al 2006;Giro et al 2009).…”