Study on Surfactin, a Cyclic Depsipeptide. II. Synthesis of Surfactin B2 Produced by Bacillus natto KMD 2311.
نویسندگان
چکیده
منابع مشابه
Surfactin isoforms from Bacillus coagulans.
Bacillus coagulans has been found to produce several surfactins that are powerful lipopeptide surfactants. Four main components with molecular weights 1007, 1021 and 1035 Da were separated. Their structures have been confirmed by spectrometric and spectroscopic studies and by acid hydrolysis. The compounds were found to represent two pairs of surfactin isoforms in which beta-hydroxy-iso-C14 or ...
متن کاملGene yerP, involved in surfactin self-resistance in Bacillus subtilis.
Surfactin is a cyclic lipopeptide biosurfactant. Transposon mutagenesis was performed in Bacillus subtilis strain 168, and a surfactin-susceptible mutant, strain 801, was isolated. Analysis of the region of insertion revealed that yerP was the determinant of surfactin self-resistance. YerP had homology with the resistance, nodulation, and cell division (RND) family proton motive force-dependent...
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Surfactin, one of the most effective biosurfactants, has great potential in commercial applications. Studies on effective methods to reduce surfactin's production cost are always a hotspot in the research field of biosurfactants. The aim of this study was to reveal the role of Mn2+ in promoting the biosynthesis of surfactin by Bacillus subtilis ATCC 21332, which could arise more targeted sugges...
متن کاملThe effect of pretreatments on surfactin production from potato process effluent by Bacillus subtilis.
Pretreatments of low-solids potato process effluent were tested for their potential to increase surfactin yield. Pretreatments included heat, removal of starch particulates, and acid hydrolysis. Elimination of contaminating vegetative cells was necessary for surfactin production. After autoclaving, 0.40 g/L of surfactin was produced from the effluent in 72 h, vs 0.24 g/L in the purified potato ...
متن کاملoptimization of surfactin production by bacillus subtilis atcc 6633 in a miniaturized bioreactor
in recent years, biosurfactants due to wide applications in chemical, petroleum, food andpharmaceutical industries, have been widely considered by researchers. biosurfactants are produced by aseries of microorganisms, so it is important to screen culture medium and operating conditions in miniaturized bioreactors prior to scaling up to large bioreactors.in this study, using a kind of miniaturiz...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1996
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.44.5