By Naim Kosaric, Fazilet Vardar Sukan
''Biosurfactants can effectively exchange and increase the houses of chemically synthesized surface-active brokers. This publication comprises forte chapters facing tools for construction of biosurfactants on a laboratory and industrial/commercial scale. It offers novel and confirmed functions of biosurfactants. the hot variation is geared toward real construction and purposes of biosurfactants in modern biotechnology, reflecting the advances made because the booklet of the 1st version. a distinct bankruptcy is dedicated to the assessment and review of particular chosen patents in relation to biosurfactants''-- Read more...
summary: ''Biosurfactants can effectively substitute and increase the homes of chemically synthesized surface-active brokers. This publication includes area of expertise chapters facing tools for construction of biosurfactants on a laboratory and industrial/commercial scale. It provides novel and confirmed functions of biosurfactants. the recent version is geared toward genuine creation and purposes of biosurfactants in glossy biotechnology, reflecting the advances made because the ebook of the 1st variation. a unique bankruptcy is dedicated to the assessment and assessment of particular chosen patents when it comes to biosurfactants''
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Extra info for Biosurfactants : production and utilization--processes, technologies, and economics
2007; Takahashi et al. 2011). Several types of molecules can act as hydrophobic carbon source: oils, fats, fatty acids, their corresponding esters, alkanes, or waste streams containing one of them. 1; Davila et al. 1994). However, the presence of residual hydrophobic carbon source in the final sophorolipids is a bigger issue for fatty acid esters due to their corrosive and irritating properties. Free fatty acids of a specific length can be used as well, although there are some constraints such as a melting temperature above room temperature for the saturated fatty acids and effects on the cell’s electron balance.
The molecules are Sophorolipids 25 produced at certain limiting conditions in excess of a carbon source and, therefore, it is suggested that they act as an external carbon sink. In other fungal organisms producing glycolipids, for example, MELS and cellobiose lipids, the expression of the clustered genes is controlled by a transcription factor that is activated in response to a changing environment. For example, in Ustilago maydis, the production of biosurfactants occurs after activation upon nitrogen limitation of a transcription factor present in the cluster (Teichmann et al.
If, however, an additional copy of the lactone esterase gene controlled by a constitutive promoter is introduced, more lactonic sophorolipids are present in the blend (WO2013092421). Furthermore, a S. bombicola strain knocked out in beta-oxidation can be applied for the increased production of medium-chain sophorolipids starting from unconventional substrates (Van Bogaert et al. 2009) or the production of 20-hydroxyeicosatetraenoic acid, a compound of interest in medical studies (Van Bogaert et al.