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首页> 外文期刊>Bioprocess and Biosystems Engineering >Fermentation and evaluation of Klebsiella pneumoniae and K. oxytoca on the production of 2,3-butanediol
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Fermentation and evaluation of Klebsiella pneumoniae and K. oxytoca on the production of 2,3-butanediol

机译：肺炎克雷伯菌和产氧克雷伯菌对2,3-丁二醇生产的发酵和评价

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摘要

Klebsiella is one of the genera that has shown unbeatable production performance of 2,3-butanediol (2,3-BD), when compared to other microorganisms. In this study, two Klebsiella strains, K. pneumoniae (DSM 2026) and K. oxytoca (ATCC 43863), were selected and evaluated for 2,3-BD production by batch and fed-batch fermentations using glucose as a carbon source. Those strains' morphologies, particularly their capsular structures, were analyzed by scanning electron microscopy (SEM). The maximum titers of 2,3-BD by K. pneumoniae and K. oxytoca during 10 h batch fermentation were 17.6 and 10.9 g L~(-1) respectively; in fed-batch cultivation, the strains showed the maximum titers of 50.9 and 34.1 g L~(-1) respectively. Although K. pneumoniae showed higher productivity, SEM showed that it secreted large amounts of capsular polysaccharide, increasing patho-genicity and hindering the separation of cells from the fermentation broth during downstream processing.
机译：与其他微生物相比，克雷伯菌是显示出无与伦比的2,3-丁二醇（2,3-BD）生产性能的属之一。在这项研究中，选择了两种克雷伯菌菌株，即肺炎克雷伯氏菌（DSM 2026）和产氧克雷伯氏菌（ATCC 43863），并使用葡萄糖作为碳源，通过分批和补料分批发酵法评估了2,3-BD的产量。这些菌株的形态，特别是它们的荚膜结构，通过扫描电子显微镜（SEM）进行了分析。在10 h分批发酵过程中，肺炎克雷伯菌和产氧克雷伯菌的2,3-BD最高效价分别为17.6 g和10.9 g L〜（-1）;在分批补料培养中，菌株的最大效价分别为50.9 g L〜（-1）和34.1 g L〜（-1）。尽管肺炎克雷伯氏菌显示出更高的生产率，但SEM显示它分泌大量荚膜多糖，增加了致病性，并阻碍了下游加工过程中细胞与发酵液的分离。

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  • 来源
    《Bioprocess and Biosystems Engineering》 |2012年第7期|p.1081-1088|共8页
  • 作者

    Jung-Hee Cho; Chelladurai Rathnasingh; Hyohak Song; Bong-Woo Chung; Hee Jong Lee; Doyoung Seung;

  • 作者单位

    Research and Development Center, GS Caltex Corporation, 104-4 Munji-dong, Yusung-gu, Daejeon 305-380, Republic of Korea;

    Research and Development Center, GS Caltex Corporation, 104-4 Munji-dong, Yusung-gu, Daejeon 305-380, Republic of Korea;

    Research and Development Center, GS Caltex Corporation, 104-4 Munji-dong, Yusung-gu, Daejeon 305-380, Republic of Korea;

    School of Chemical Engineering, Chonbuk National University, Jeon-ju, Jeonbuk 561-756, Republic of Korea;

    Research and Development Center, GS Caltex Corporation, 104-4 Munji-dong, Yusung-gu, Daejeon 305-380, Republic of Korea;

    Research and Development Center, GS Caltex Corporation, 104-4 Munji-dong, Yusung-gu, Daejeon 305-380, Republic of Korea;

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  • 正文语种 eng
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  • 关键词

    2,3-butanediol; K. pneumonia; K. oxytoca; fermentation; capsular polysaccharide;

    机译：2,3-丁二醇;肺炎克雷伯菌;催产K.发酵荚膜多糖;

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