Pseudomonas aeruginosa LBI production as an integrated process using the wastes from sunflower-oil refining as a substrate.
Pseudomonas aeruginosa LBI produced surface active rhamnolipids when cultivated on waste from the sunflower-oil process under different conditions. These biosurfactants, which reduce the superficial and interfacial tensions between fluids, offer advantages over their chemical counterparts, especially because of their ecological acceptability. These molecules can be used in fields as diverse as chemical, pharmaceutical and petrochemical industries. In this work, we present the effect of C/N ratio on growth and production yield. The best production yields (Y P/S) were achieved for C/N ratios (in g/g) of 8/1 (0.22) and 6.4/1 (0.23). The product concentration was very satisfactory (7.3g/L) at C/N ratio of 8/1, especially when considering that the substrate was basically composed of wastes that would otherwise constitute an environmental disposal problem.
Benincasa
Maria
M
Departamento de Biologia Aplicada à Agropecuária, Universidade Estadual Paulista - UNESP/Campus de Jaboticabal, Via de Acesso Prof Paulo, Donato Castellane s/n, 14884-900 Jaboticabal/SP, Brazil. vidotti@netsite.com.br
Accorsini
Fábio Raphael
FR
D006017:Glycolipids / Q000032:analysis / Q000096:biosynthesis / Q000737:chemistry; D007220:Industrial Waste; D007700:Kinetics; D010938:Plant Oils / Q000378:metabolism*; D011550:Pseudomonas aeruginosa / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D000074242:Sunflower Oil; D013500:Surface Tension / Q000187:drug effects; D013501:Surface-Active Agents / Q000494:pharmacology; D014867:Water
D006017:Glycolipids; D007220:Industrial Waste; D010938:Plant Oils; D000074242:Sunflower Oil; D013501:Surface-Active Agents; C418382:rhamnolipid; D014867:Water