PMID- 17157001
OWN - NLM
STAT- MEDLINE
DCOM- 20070516
LR  - 20151119
IS  - 0960-8524 (Print)
IS  - 0960-8524 (Linking)
VI  - 98
IP  - 7
DP  - 2007 May
TI  - Comparative study of spent grains and delignified spent grains as yeast supports 
      for alcohol production from molasses.
PG  - 1440-7
AB  - Fresh, defrosted and delignified brewer's spent grains (BSG) were used as yeast 
      supports for alcoholic fermentation of molasses. Glucose solution (12%) with and 
      without nutrients was used for cell immobilization on fresh BSG, without 
      nutrients for cell immobilization on defrosted and with nutrients for cell 
      immobilization on delignified BSG. Repeated fermentation batches were performed 
      by the immobilized biocatalysts in molasses of 7, 10 and 12 initial Baume density 
      without additional nutrients at 30 and 20 degrees C. Defrosted BSG immobilized 
      biocatalyst was used only for repeated fermentation batches of 7 initial Baume 
      density of molasses without nutrients at 30 and 20 degrees C. After 
      immobilization, the immobilized microorganism population was at 10(9) cells/g 
      support for all immobilized biocatalysts. Fresh BSG immobilized biocatalyst 
      without additional nutrients for yeast immobilization resulted in higher 
      fermentation rates, lower final Baume densities and higher ethanol productivities 
      in molasses fermentation at 7, 10 and 12 initial degrees Be densities than the 
      other above biocatalysts. Adaptation of defrosted BSG immobilized biocatalyst in 
      the molasses fermentation system was observed from batch to batch approaching 
      kinetic parameters reported in fresh BSG immobilized biocatalyst. The results of 
      this study concerning the use of fresh or defrosted BSG as yeast supports could 
      be promising for scale-up operation.
FAU - Kopsahelis, Nikolaos
AU  - Kopsahelis N
AD  - Food Biotechnology Group, Department of Chemistry, University of Patras, GR-26500 
      Patras, Greece.
FAU - Agouridis, Nikolaos
AU  - Agouridis N
FAU - Bekatorou, Argyro
AU  - Bekatorou A
FAU - Kanellaki, Maria
AU  - Kanellaki M
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20061206
PL  - England
TA  - Bioresour Technol
JT  - Bioresource technology
JID - 9889523
RN  - 3K9958V90M (Ethanol)
SB  - IM
MH  - Cells, Immobilized/metabolism
MH  - Chromatography, Gas
MH  - Edible Grain/*metabolism
MH  - Ethanol/*analysis
MH  - *Fermentation
MH  - Microscopy, Electron
MH  - Molasses/*microbiology
MH  - Saccharomyces cerevisiae/*metabolism/ultrastructure
MH  - Temperature
EDAT- 2006/12/13 09:00
MHDA- 2007/05/17 09:00
CRDT- 2006/12/13 09:00
PHST- 2005/12/13 00:00 [received]
PHST- 2006/02/28 00:00 [revised]
PHST- 2006/03/07 00:00 [accepted]
PHST- 2006/12/13 09:00 [pubmed]
PHST- 2007/05/17 09:00 [medline]
PHST- 2006/12/13 09:00 [entrez]
AID - S0960-8524(06)00569-4 [pii]
AID - 10.1016/j.biortech.2006.03.030 [doi]
PST - ppublish
SO  - Bioresour Technol. 2007 May;98(7):1440-7. doi: 10.1016/j.biortech.2006.03.030. 
      Epub 2006 Dec 6.