| 磁聚复配物对L-乳酸发酵液的预处理研究 |
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| 引用本文： | 李文,柳丹,杨英歌,王冬梅,樊永红,姚建铭,郑之明,余增亮.磁聚复配物对L-乳酸发酵液的预处理研究[J].食品与发酵工业,2007,33(3):53-56. |
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| 作者姓名： | 李文 柳丹 杨英歌 王冬梅 樊永红 姚建铭 郑之明 余增亮 |
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| 作者单位： | 中国科学院等离子体物理研究所离子束生物工程学重点实验室,安徽合肥,230031 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 对用磁聚复配物预处理L-乳酸发酵液进行了研究,讨论了pH值、复配物用量、搅拌速度与时间、温度、磁场强度对絮凝效果的影响。实验结果显示,在pH5~6,40 mg/L壳聚糖与100 mg/L Fe3O4复配,200r/min下搅拌5 min,35~55℃,外加磁场(0.5T)作用1 min的情况下,发酵液的絮凝率达到了98.5%,表明磁聚复配物对L-乳酸发酵液中的蛋白质具有优良的絮凝能力,且更大的优势在于显著提高了固液分离的速度。
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| 关 键 词： | L-乳酸 发酵液 壳聚糖 磁 复配 絮凝 |
| 修稿时间： | 10 16 2006 12:00AM |
Pretreatment of L-Lactic Acid Fermentation Broth by Magnetic Polymer |
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| Li Wen,Liu Dan,Yang Yingge,Wang Dongmei,Fan Yonghong,Yao Jianming,Zheng Zhiming,Yu Zengliang.Pretreatment of L-Lactic Acid Fermentation Broth by Magnetic Polymer[J].Food and Fermentation Industries,2007,33(3):53-56. |
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| Authors: | Li Wen Liu Dan Yang Yingge Wang Dongmei Fan Yonghong Yao Jianming Zheng Zhiming Yu Zengliang |
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| Affiliation: | Key Laboratory of Ion Beam Bioengineering,Chinese Academy of Sciences, H efei 230031 ,China |
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| Abstract: | This paper studies the pretreatment of L-lactic acid fermentation broth using magnetic polymer.Experimental results showed that optimum flocculation conditions were: the concentration of magnetic polymer was 40 mg/L chitosan with 100 mg/L ferroferric oxide,pH 5～6,stirring at the rate of 200r/min for 5 min,35～55℃.Under such conditions,FR was 98.5% by virtue of magnetic field(0.5T) for 1 min,indicating that magnetic polymer have excellent ability to flocculate proteins from the L-lactic acid fermentation broth.Furthermore,this magnetic polymer dramatically accelerate the pretreatment process. |
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| Keywords: | L-lactic acid fermentation broth chitosan magnet compound flocculation |
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