Oil Wastes as Unconventional Substrates for Rhamnolipid Biosurfactant Production by Pseudomonas aeruginosa LBI
Oil Wastes as Unconventional Substrates for Rhamnolipid Biosurfactant Production by Pseudomonas aeruginosa LBI
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DOI：
10.1021/bp050198x
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发表时间：
2005
影响因子：
2.9
通讯作者：
M. Nitschke;S. Costa;R. Haddad;Lireny A. G. Gonçalves;M. Eberlin;J. Contiero
中科院分区：
文献类型：
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作者：
M. Nitschke;S. Costa;R. Haddad;Lireny A. G. Gonçalves;M. Eberlin;J. Contiero
石油废料被评估为铜绿假单胞菌 LBI 菌株生产鼠李糖脂的替代低成本底物。对从大豆、棉籽、巴巴苏油、棕榈油和玉米油精炼厂获得的废物进行了测试。以大豆皂脚废料为最佳底物，产生鼠李糖脂11.7 g/L，表面张力为26.9 mN/m，临界胶束浓度为51.5 mg/L，产率为75%。当铜绿假单胞菌 LBI 在疏水性基质上培养时，单鼠李糖脂 RhaC10C10 占主导地位，而亲水性碳源主要形成二鼠李糖脂 Rha2C10C10。
Oil wastes were evaluated as alternative low‐cost substrates for the production of rhamnolipids by Pseudomonas aeruginosa LBI strain. Wastes obtained from soybean, cottonseed, babassu, palm, and corn oil refinery were tested. The soybean soapstock waste was the best substrate, generating 11.7 g/L of rhamnolipids with a surface tension of 26.9 mN/m, a critical micelle concentration of 51.5 mg/L, and a production yield of 75%. The monorhamnolipid RhaC10C10 predominates when P. aeruginosa LBI was cultivated on hydrophobic substrates, whereas hydrophilic carbon sources form the dirhamnolipid Rha2C10C10 predominantly.