FOOD SCIENCE ›› 2011, Vol. 32 ›› Issue (7 ): 207-210.doi: 10.7506/spkx1002-6630-201107044

• Bioengineering • Previous Articles     Next Articles

Screening of Acorn Varieties and Yeast Strains for Bio-ethanol Production

TIAN Yu-feng,LI An-ping,XIE Bi-xia,DING Yan-peng,CUI Fu-gui   

  1. College of Food Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,China
  • Received:2010-07-28 Revised:2011-02-23 Online:2011-04-15 Published:2011-03-30

Abstract: In the present study, comparative investigations on the nutritional composition and fermentability of acorn kernels from 12 varieties and the adaptability of 5 species of yeast towards the fermentation of Castanea seguinii Dode starch were carried out. The results showed that among 12 varieties of acorn, Castanea seguinii Dode, Quercus variabilis Blume, Cyclobalanopsis multinervis and Castanea henryi contained higher starch content and starch yield per plant but less tannin. Fermented mashes from Castanea henryi and Castanea seguinii Dode starches exhibited significantly (P < 0.05) higher alcohol content and starch utilization rate but significantly (P > 0.05) lower reducing sugar content when compared to fermented mashes from Quercus variabilis Blume and Cyclobalanopsis multinervis starches. Angel high temperature active dry yeast and Nanyang yeast 1308 had a significant (P < 0.05) advantage over Danbaoli high active dry yeast,   K   yeast and Nanyang yeast 1300 in terms of alcohol content and residual sugar content in fermented mash, thereby proving perfect strains for bio-ethanol production from acorn.

Key words: bio-ethanol production, acorn varieties, strain, screening

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