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- W2037671519 abstract "A simple and efficient dual-gradient elution strategy for the separation and purification of marine bacterial lipopeptides was developed in macroporous resin column chromatography. Preliminary batch adsorption studies conducted on four different resins revealed that a non-polar resin, HP-20, exhibited the highest adsorption capacity. The optimal conditions yielding maximum adsorption of lipopeptides on to this resin were as follows: temperature = 40 °C, resin dosage = 10 g L−1 and initial lipopeptide concentration = 3 g L−1. While employing a simple stepwise solvent gradient elution under optimal conditions, three lipopeptide families, namely, iturin, fengycin and surfactin could be separated with poor resolution. However, the resolution was significantly improved after implementing a family specific dual-gradient elution strategy, wherein, both the solvent composition and pH of the mobile phase were simultaneously varied. Using this approach, lipopeptides were effectively resolved and purities up to 68.3% (iturin), 77.6% (fengycin) and 91.6% (surfactin) were achieved. To the best of our knowledge, this is the first report on the macroporous adsorption resin (MAR) chromatography employing family specific dual-gradient elution strategy for simultaneous recovery and purification of lipopeptides directly from cell free culture broth." @default.
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- W2037671519 date "2015-03-01" @default.
- W2037671519 modified "2023-10-03" @default.
- W2037671519 title "Dual gradient macroporous resin column chromatography for concurrent separation and purification of three families of marine bacterial lipopeptides from cell free broth" @default.
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- W2037671519 doi "https://doi.org/10.1016/j.seppur.2015.01.025" @default.
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