TY - GEN
T1 - Strain selection and medium optimization for aspergillus ni gerand saccharomyces ce revis iae for ethanol fermentation
AU - Izmirlioglu, Gulten
AU - Demirci, Ali
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84911410744
T3 - American Society of Agricultural and Biological Engineers Annual International Meeting 2014, ASABE 2014
SP - 2594
EP - 2604
BT - American Society of Agricultural and Biological Engineers Annual International Meeting 2014, ASABE 2014
PB - American Society of Agricultural and Biological Engineers
T2 - American Society of Agricultural and Biological Engineers Annual International Meeting 2014, ASABE 2014
Y2 - 13 July 2014 through 16 July 2014
ER -