Optimization of Medium Composition for Lipopeptide Production from Bacillus subtilis N7 using Response Surface Methodology
분야
자연과학 > 생물
저자
( Luo Yi ) , ( Guo Yi Zhang ) , ( Zhen Zhu ) , ( Xiao Hui Wang ) , ( Wei Ran ) , ( Qi Rong Shen )
발행기관
한국미생물생명공학회(구 한국산업미생물학회)
간행물정보
한국미생물·생명공학회지 2013년, 제41권 제1호, 52~59페이지(총8페이지)
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05212168.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    The nutritional requirements for the maximum production of lipopeptides by Bacillus subtilis N7 (B. subtilis N7) were investigated and optimized using response surface methodology (RSM) under shake flask fermentation. A one-factor-at-a time experimental setup was used to screen carbon and nitrogen sources. A Plackett?Burman design (PBD) was employed to screen the most critical variables for lipopeptides production amongst ten nutritional elements. The central composite experimental design (CCD) was finally adopted to elucidate the composition of the fermentation medium. Statistical analyses (analysis of variance, ANOVA) of the results showed that KCl, MnSO4 and FeSO4·6H2O were important components and that their interactions were strong. Lipopeptide production was predicted to reach 709.87 mg/L after a 60 h incubation using an optimum fermentation medium composed of glucose 7.5 g/L, peanut oil 1.25 g/L, MgSO4 0.37 g/L, KH2PO4 0.75 g/L, monosodium glutamate 6.75 g/L, yeast extract and NH4Cl (5:3 w/w) 10 g/L, KCl 0.16 g/L, FeSO4·6H2O 0.24 mg/L, MnSO4 0.76 mg/L, and an initial pH of 7.0. Lipopeptide production (706.57 ± 3.70 mg/L) in the optimized medium confirmed the validity of the predicted model.
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