Fermentation of galacturonic acid and pectin-rich materials to ethanol by genetically modified strains of Erwinia

Evaluation of the four ethanologenic constructs of bacteria in the genus Erwinia indicates that two strains E. chrysanthemi EC16 and E. carotovora SR38 show promise for development of direct hydrolysis and fermentation of pectin-rich substrates to mixtures of ethanol and acetate. Both strains fermen...

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Bibliographic Details
Published in:Biotechnology letters 1998-02, Vol.20 (2), p.195-200
Main Authors: Grohmann, K, Manthey, J.A, Cameron, R.G, Buslig, B.S
Format: Article
Language:English
Subjects:
Biological and medical sciences
Biotechnology
Carbon dioxide
Ethanol
Fermentation
Fundamental and applied biological sciences. Psychology
Methods. Procedures. Technologies
Microbial engineering. Fermentation and microbial culture technology
orange peel
Pectobacterium carotovorum
Pectobacterium chrysanthemi
plant residues
Saccharides
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Summary:Evaluation of the four ethanologenic constructs of bacteria in the genus Erwinia indicates that two strains E. chrysanthemi EC16 and E. carotovora SR38 show promise for development of direct hydrolysis and fermentation of pectin-rich substrates to mixtures of ethanol and acetate. Both strains fermented glucose to ethanol in nearly theoretical yields, but produced mainly acetate and ethanol by fermentation of D-galacturonic acid. Both strains depolymerized citrus pectin, polygalacturonic acid and polysaccharides in citrus peel and converted resulting sugars to carbon dioxide, acetate, ethanol and lesser amounts of formate and succinate.
ISSN:0141-5492
1573-6776
DOI:10.1023/a:1005349112770