Advances in ethanol production using immobilized cell systems
The application of immobilized cell systems for the production of ethanol has resulted in substantial improvements in the efficiency of the process when compared to the traditional free cell system. In this review, the various methods of cell immobilization employed in ethanol production systems have been described in detail. Their salient features, performance characteristics, advantages and limitations have been critically assessed. More recently, these immobilized cell systems have also been employed for the production of ethanol from non-conventional feedstocks such as Jerusalem artichoke extracts, cheese whey, cellulose, cellobiose and xylose. Ethanol production by immobilized yeast and bacterial cells has been attempted in various bioreactor types. Although most of these studies have been carried out using laboratory scale prototype bioreactors, it appears that only fluidized bed, horizontally packed bed bioreactors and tower fermenters may find application on scale-up. Several studies have indicated that upon immobilization, yeast cells performing ethanol fermentation exhibit more favourable physiological and metabolic properties. This, in addition to substantial improvements in ethanol productivities by immobilized cell systems, is indicative of the fact that future developments in the production of ethanol and alcoholic beverages will be directed towards the use of immobilized cell systems. 291 references.
- Research Organization:
- Univ. of Western Ontario, London, Canada
- OSTI ID:
- 5634197
- Journal Information:
- CRC Crit. Rev. Biotechnol.; (United States), Vol. 1:4
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fifteenth Symposium on Biotechnology for Fuels and Chemicals: Program and Abstracts, May 10-14, 1993, Colorado Springs, Colorado
Continuous ethanol production from Jerusalem artichoke tubers. II. Use of immobilized cells of Kluyveromyces marxianus
Related Subjects
BACTERIA
IMMOBILIZED CELLS
ETHANOL
PRODUCTION
REVIEWS
YEASTS
BATCH CULTURE
BIOREACTORS
CELLULOSE
CONTINUOUS CULTURE
DESIGN
EFFICIENCY
FERMENTATION
TECHNOLOGY ASSESSMENT
TUBERS
WHEY
XYLOSE
ALCOHOLS
ALDEHYDES
BIOCONVERSION
CARBOHYDRATES
DOCUMENT TYPES
FUNGI
HYDROXY COMPOUNDS
INDUSTRIAL WASTES
MICROORGANISMS
MONOSACCHARIDES
ORGANIC COMPOUNDS
PENTOSES
PLANTS
POLYSACCHARIDES
SACCHARIDES
WASTES
090222* - Alcohol Fuels- Preparation from Wastes or Biomass- (1976-1989)
140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)