UC知道求助 翻译一篇生化方面论文
来源：百度知道 编辑：UC知道 时间：2024/05/28 09:37:51
Recovery and separation of surfactin from pretreated fermentation broths by physical and chemical extraction
Huei-Li Chen and Ruey-Shin Juang
aDepartment of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li 32003, Taiwan
Received 25 April 2007; revised 5 June 2007; accepted 8 June 2007. Available online 15 June 2007.
Abstract
The recovery of surfactin from fermentation broths with the culture of Bacillus subtilis ATCC 21332 by physical and chemical extraction was studied, in which the broths were pretreated by acid precipitation and, if necessary, the precipitate was further dissolved in NaOH solution. The physical solid–liquid and liquid–liquid extractions were performed with different organic solvents (ethyl acetate, n-hexane) and at different times of extraction run. It was shown that better extraction was obtained with ethyl acetate than n-hexane. The extraction could be improved by increasing the times of extraction run under
Huei-Li Chen and Ruey-Shin Juang
aDepartment of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li 32003, Taiwan
Received 25 April 2007; revised 5 June 2007; accepted 8 June 2007. Available online 15 June 2007.
Abstract
The recovery of surfactin from fermentation broths with the culture of Bacillus subtilis ATCC 21332 by physical and chemical extraction was studied, in which the broths were pretreated by acid precipitation and, if necessary, the precipitate was further dissolved in NaOH solution. The physical solid–liquid and liquid–liquid extractions were performed with different organic solvents (ethyl acetate, n-hexane) and at different times of extraction run. It was shown that better extraction was obtained with ethyl acetate than n-hexane. The extraction could be improved by increasing the times of extraction run under
surfactin 的补救和分离从被预处理的发酵汤由物理和化工提取
Huei 李・陈和Ruey 走路Juang
化学工程和材料学, 元・Ze 大学, Chung-Li 32003,台湾的aDepartment
接受2007 年4月25 日; 校正2007 年6月5 日; 接受2007 年6月8 日。线上可以得到的2007 年6月15 日。
摘要
surfactin 补救从发酵汤以文化Bacillus-subtilis ATCC 21332 由物理和化工提取被学习了, 汤由酸降雨雪预处理并且, 如果需要, 沉淀物被溶化进一步在NaOH 解答。物理固体–液体和液体–液体提取执行了用不同的有机溶液(乙酸乙酯, 正己烷) 并且在提取奔跑的不同的时刻。它被显示, 更好的提取被获得了与乙酸乙酯比正己烷。提取能经过增加改进提取的时代跑在有机解答之下的指定的容量。为化工液体–surfactin 的液体提取与Aliquat 336 (5–200 毫米) 在正己烷里, 效率被改进了。相当数量无机盐在小条解答并且被优选了。Surfactin 恢复在物理或化工提取为许多和核磁共振的分光学最后描绘之后。化工提取的结果表示, surfactin 欣然会束缚与Aliquat 336 的季铵正离子。
主题词: Surfactin; 补救; 发酵汤; 提取; 乙酸乙酯; n 己烷; Aliquat 336