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首页> 外文期刊>Bioprocess and Biosystems Engineering >Acetic acid production from food wastes using yeast and acetic acid bacteria micro-aerobic fermentation
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Acetic acid production from food wastes using yeast and acetic acid bacteria micro-aerobic fermentation

机译：使用酵母和乙酸细菌微需氧发酵从食物垃圾中生产乙酸

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摘要

In this study, yeast and acetic acid bacteria strains were adopted to enhance the ethanol-type fermentation resulting to a volatile fatty acids yield of 30.22 g/L, and improve acetic acid production to 25.88 g/L, with food wastes as substrate. In contrast, only 12.81 g/L acetic acid can be obtained in the absence of strains. The parameters such as pH, oxidation reduction potential and volatile fatty acids were tested and the microbial diversity of different strains and activity of hydrolytic ferment were investigated to reveal the mechanism. The optimum pH and oxidation reduction potential for the acetic acid production were determined to be at 3.0-3.5 and -500 mV, respectively. Yeast can convert organic matters into ethanol, which is used by acetic acid bacteria to convert the organic wastes into acetic acid. The acetic acid thus obtained from food wastes micro-aerobic fermentation liquid could be extracted by distillation to get high-pure acetic acid.
机译：在这项研究中，采用酵母和乙酸细菌菌株来增强乙醇型发酵，使挥发性脂肪酸的产量达到30.22 g / L，并将乙酸产量提高至25.88 g / L，并以食物残渣为底物。相反，在没有菌株的情况下，仅可获得12.81 g / L的乙酸。测试了pH，氧化还原电位和挥发性脂肪酸等参数，并研究了不同菌株的微生物多样性和水解发酵活性，以揭示其机理。确定用于乙酸生产的最佳pH和氧化还原电位分别为3.0-3.5和-500mV。酵母可以将有机物转化为乙醇，乙酸细菌可以利用乙醇将有机废物转化为乙酸。从食物残渣微需氧发酵液中获得的乙酸可以通过蒸馏提取以得到高纯度的乙酸。

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  • 来源
    《Bioprocess and Biosystems Engineering》 |2015年第5期|863-869|共7页
  • 作者

    Li Yang; He Dongwei; Niu Dongjie; Zhao Youcai;

  • 作者单位

    Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China;

    Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China;

    Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China;

    Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Food wastes; Micro-aerobic fermentation; Yeast; Acetic acid;

    机译：食物垃圾;好氧发酵;酵母;乙酸;

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