Strain selection and medium optimization for aspergillus ni gerand saccharomyces ce revis iae for ethanol fermentation

Gulten Izmirlioglu, Ali Demirci

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Eight strains of Aspergillus screened for glucose production from industrial potato waste which will be used for ethanol fermentation. Aspergillus niger NRRL 330 was found the best strain among tested ones, with 121 U/ml amylase activity and 20.45 g/L glucose conversion. After strain selection, medium is screened for nitrogen sources and inorganic salts using Plackett-Burman design. Malt extract, FeSO4.7H20, and CaCl2.2H20 have positively significant effect while yeast extract and CaCO3 showed a negative effect on amylase production by A. niger on a waste potato mash medium under studied condition. Yeast extract, malt extract, MgSO4.7H20, and FeSO4.7H20 have positively significant effect while (NH4)2. SO4, KH2PO4, and CaCl2.2H20 showed a negative effect on ethanol production under studied conditions. Finally, a medium consisted of waste potato mash, malt extract, yeast extract, MgSO4.7H20, CaCl2.2H20 and FeSO4.7H20 would promote the microbial growth as well as higher yields of ethanol and amylase activity for simultaneous saccharification and fermentation of waste potato mash.

Original languageEnglish (US)
Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2014, ASABE 2014
PublisherAmerican Society of Agricultural and Biological Engineers
Pages2594-2604
Number of pages11
ISBN (Electronic)9781632668455
StatePublished - Jan 1 2014
EventAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2014, ASABE 2014 - Montreal, Canada
Duration: Jul 13 2014Jul 16 2014

Publication series

NameAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2014, ASABE 2014
Volume4

Other

OtherAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2014, ASABE 2014
CountryCanada
CityMontreal
Period7/13/147/16/14

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)
  • Mechanical Engineering

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