Alcohol from membrane processed concentrated cheese whey

Journal Article · Fri Jan 01 00:00:00 EST 1982 · Ind. Eng. Chem., Prod. Res. Dev.; (United States)

DOI:https://doi.org/10.1021/i300005a018· OSTI ID:6722816

Rajagopalan, K; Kosikowskik, F V

A fermentable whey substrate in the form of a high solids permeate was obtained by reconstituting spray-dried whey powder to 36% total solids followed by ultrafiltration to separate the protein. The high solids permeate was demineralized to permit rapid yeast growth. The final permeate with 24% lactose and at pH 4.8 gave high yields of EtOH rapidly upon inoculation with lactose-fermenting yeasts. One yeast species, Kluyveromyces fragilis NRRL Y 2415, yielded 108.8 g of EtOH/L, giving 84.3% of the theoretical maximum. Batch EtOH productivity was 3.2 g/L/h. The cost analysis of the ultrafiltration-fermentation process is highly favorable, if evaporation instead of the widely used reverse osmosis is employed for preconcentration of whey.

• Research Organization: Dept Food Science, Cornell Univ, Ithaca, NY 14853
• OSTI ID: 6722816
• Journal Information: Ind. Eng. Chem., Prod. Res. Dev.; (United States), Vol. 21:1
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
ETHANOL
BIOSYNTHESIS
LACTOSE
FERMENTATION
WHEY
COST
SEPARATION PROCESSES
YEASTS
YIELDS
ALCOHOLS
BIOCONVERSION
CARBOHYDRATES
DISACCHARIDES
FUNGI
HYDROXY COMPOUNDS
INDUSTRIAL WASTES
MICROORGANISMS
OLIGOSACCHARIDES
ORGANIC COMPOUNDS
PLANTS
SACCHARIDES
SYNTHESIS
WASTES
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