Advances in utilization of renewable substrates for biosurfactant production

Abstract

Biosurfactants are amphiphilic molecules that have both hydrophilic and hydrophobic moieties which partition preferentially at the interfaces such as liquid/liquid, gas/liquid or solid/liquid interfaces. Such characteristics enable emulsifying, foaming, detergency and dispersing properties. Their low toxicity and environmental friendly nature and the wide range of potential industrial applications in bioremediation, health care, oil and food processing industries makes them a highly sought after group of chemical compounds. Interest in them has also been encouraged because of the potential advantages they offer over their synthetic counterparts in many fields spanning environmental, food, biomedical, petrochemical and other industrial applications. Their large scale production and application however are currently restricted by the high cost of production and by the limited understanding of their interactions with cells and with the abiotic environment. In this paper, we review the current knowledge and latest advances in the search for cost effective renewable agro industrial alternative substrates for their production.

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

“…Despite decades of research, successful bioremediation of oil contaminated environment still remains a great challenge for the researchers (Perfumo et al, 2010). One of the most effective methods to treat oil-related contamination is the use of surfactants that disperse the oil and accelerate its mineralization (Makkar et al, 2011). The principle processes for their successful removal are currently believed to be microbial transformation and degradation (Gibson et al, 1975).…”

“…They act by forming lipid micelles at the interface of immiscible liquids, such as water and oil by reducing surface and interfacial tension and blocking hydrogen bonding and hydrophilic/hydrophobic interactions (Darvishi et al, 2011). Biosurfactants can be glycolipids, lipopeptides, lipolysaccharides, polysaccharide-protein complexes, fatty acids, and lipids (Makkar et al, 2011). The rhamnolipids are class of biosurfactants that received great attention and were extensively reported to possess applications in commercial, therapeutic environmental, and biomedical (Dusane et al, 2010).…”

Avaliação De Substratos De Baixo Custo Na Produção De Biossurfactantes Do Tipo Lipopeptídeos

“…Substratos e os nutrientes do meio de cultivo equivalem a 30% dos custos de produção de biossurfactantes. A utilização de resíduos industriais como substratos para a produção de biossurfactante apresenta vantagens como a redução dos impactos ambientais ocasionados por estes resíduos e uma diminuição considerável nos custos produção de biossurfactantes (MAKKAR et al 2011).…”

“…Uma variedade de subprodutos ou resíduos, que incluem derivados de óleos vegetais, resíduos de amido, resíduos de destilaria de óleos e substâncias lácteas podem ser utilizados na produção de muitos metabólitos microbianos (MAKKAR et al 2011).…”

The Production of Acetone-Butanol-Ethanol From Oil Palm Wastes by Clostridium Acetobutyricum and Utilisation of the Wastewater for Polyhydroxybutyrate Production

“…The utilisation of waste and/or waters, rich in organic pollutants, has a double benefit of reducing the pollutants while producing useful products. Another approach involves using raw substrates with negligible or no value (Makkar et al, 2011).…”