Potato starch residue stream produced during chips manufacturing was used as an
economical source for biomass and bioethanol production by Saccharomyces cerevisiae.
Results demonstrated that 1% H2SO4 at 100 C for 1 h was enough to hydrolyze all starch
contained in the residue stream. Two strains of S. cerevisiae (y-1646 and commercial one)
were able to utilize and ferment the acid-treated residue stream under both aerobic and
semi-anaerobic conditions. The maximum yield of ethanol (5.52 g L1) was achieved at
35 C by S. cerevisiae y-1646 after 36 h when ZnCl2 (0.4 g L1) was added. Addition of NH4NO3
as a source of nitrogen did not significantly affect either growth or ethanol production by
S. cerevisiae y-1646. Some secondary by-products including alcohol derivatives and medical
active compound were found to be associated with the ethanol production process.
ملخص البحث
قسم البحث
مجلة البحث
biomass and bioenergy
المشارك في البحث
تصنيف البحث
1
عدد البحث
Vol. 34
موقع البحث
http://ipac.kacst.edu.sa/eDoc/2011/196279_1.pdf
سنة البحث
2010
صفحات البحث
PP. 953 – 959