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Direct fermentation of potato starch to ethanol by cocultures of Aspergillus niger and Saccharomyces cerevisiae.
Appl Environ Microbiol. 1986 Nov; 52(5):1055-9.AE

Abstract

Direct fermentation of unhydrolyzed potato starch to ethanol by monocultures of an amylolytic fungus, Aspergillus niger, and cocultures of A. niger and Saccharomyces cerevisiae was investigated. Amylolytic activity, rate and amount of starch utilization, and ethanol yields increased several-fold in coculture versus the monoculture due to the synergistic metabolic interactions between the species. Optimal ethanol yields were obtained in the pH range 5 to 6 and amylolytic activity was obtained in the pH range 5 to 8. Ethanol yields were maximal when fermentations were conducted anaerobically. Increasing S. cerevisiae inoculum in the coculture from 4 to 12% gave a dramatic increase in the rate of ethanol production, and ethanol yields of greater than 96% of the theoretical maximum were obtained within 2 days of fermentation. These results indicate that simultaneous fermentation of starch to ethanol can be conducted efficiently by using cocultures of the amylolytic fungus A. niger and a nonamylolytic sugar fermenter, S. cerevisiae.

Authors

No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

3539016

Citation

Abouzied, M M., and C A. Reddy. "Direct Fermentation of Potato Starch to Ethanol By Cocultures of Aspergillus Niger and Saccharomyces Cerevisiae." Applied and Environmental Microbiology, vol. 52, no. 5, 1986, pp. 1055-9.
Abouzied MM, Reddy CA. Direct fermentation of potato starch to ethanol by cocultures of Aspergillus niger and Saccharomyces cerevisiae. Appl Environ Microbiol. 1986;52(5):1055-9.
Abouzied, M. M., & Reddy, C. A. (1986). Direct fermentation of potato starch to ethanol by cocultures of Aspergillus niger and Saccharomyces cerevisiae. Applied and Environmental Microbiology, 52(5), 1055-9.
Abouzied MM, Reddy CA. Direct Fermentation of Potato Starch to Ethanol By Cocultures of Aspergillus Niger and Saccharomyces Cerevisiae. Appl Environ Microbiol. 1986;52(5):1055-9. PubMed PMID: 3539016.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Direct fermentation of potato starch to ethanol by cocultures of Aspergillus niger and Saccharomyces cerevisiae. AU - Abouzied,M M, AU - Reddy,C A, PY - 1986/11/1/pubmed PY - 1986/11/1/medline PY - 1986/11/1/entrez SP - 1055 EP - 9 JF - Applied and environmental microbiology JO - Appl. Environ. Microbiol. VL - 52 IS - 5 N2 - Direct fermentation of unhydrolyzed potato starch to ethanol by monocultures of an amylolytic fungus, Aspergillus niger, and cocultures of A. niger and Saccharomyces cerevisiae was investigated. Amylolytic activity, rate and amount of starch utilization, and ethanol yields increased several-fold in coculture versus the monoculture due to the synergistic metabolic interactions between the species. Optimal ethanol yields were obtained in the pH range 5 to 6 and amylolytic activity was obtained in the pH range 5 to 8. Ethanol yields were maximal when fermentations were conducted anaerobically. Increasing S. cerevisiae inoculum in the coculture from 4 to 12% gave a dramatic increase in the rate of ethanol production, and ethanol yields of greater than 96% of the theoretical maximum were obtained within 2 days of fermentation. These results indicate that simultaneous fermentation of starch to ethanol can be conducted efficiently by using cocultures of the amylolytic fungus A. niger and a nonamylolytic sugar fermenter, S. cerevisiae. SN - 0099-2240 UR - https://www.unboundmedicine.com/medline/citation/3539016/Direct_fermentation_of_potato_starch_to_ethanol_by_cocultures_of_Aspergillus_niger_and_Saccharomyces_cerevisiae_ L2 - http://aem.asm.org/cgi/pmidlookup?view=long&pmid=3539016 DB - PRIME DP - Unbound Medicine ER -