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Succinate production from CO₂-grown microalgal biomass as carbon source using engineered Corynebacterium glutamicum through consolidated bioprocessing.


ABSTRACT: The potential for production of chemicals from microalgal biomass has been considered as an alternative route for CO₂ mitigation and establishment of biorefineries. This study presents the development of consolidated bioprocessing for succinate production from microalgal biomass using engineered Corynebacterium glutamicum. Starch-degrading and succinate-producing C. glutamicum strains produced succinate (0.16 g succinate/g total carbon source) from a mixture of starch and glucose as a model microalgal biomass. Subsequently, the engineered C. glutamicum strains were able to produce succinate (0.28 g succinate/g of total sugars including starch) from pretreated microalgal biomass of CO₂-grown Chlamydomonas reinhardtii. For the first time, this work shows succinate production from CO₂ via sequential fermentations of CO₂-grown microalgae and engineered C. glutamicum. Therefore, consolidated bioprocessing based on microalgal biomass could be useful to promote variety of biorefineries.

SUBMITTER: Lee J 

PROVIDER: S-EPMC4108913 | biostudies-other | 2014

REPOSITORIES: biostudies-other

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