The effects of sodium bisulfite in extraction of PHB by hypochlorite |
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| Authors: | Kang Suk Roh Sung Ho Yeom Young Je Yoo |
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| Institution: | (1) Department of Chemical Engineering, Seoul National University, 151-742 Seoul, Korea |
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| Abstract: | Summary Molecular weight of PHB becomes low when using a hypochlorite extraction method for PHB separation. This disadvantage was overcome by adding sodium bisulfite which is an anti-oxidant. The molecular weight drop was decreased from 30 % to 14 % by adding sodium bisulfite. It was also found that raising the pH to 12 and the addition of a surfactant resulted in the improvement of the PHB purity. |
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