Alcohol and single-cell protein production by Kluyveromyces in concentrated whey permeates with reduced ash

Journal Article · Fri Jan 01 00:00:00 EST 1982 · J. Dairy Sci.; (United States)

DOI:https://doi.org/10.3168/jds.S0022-0302(82)82465-X· OSTI ID:6010102

Mahmoud, M M; Kosikowski, F V

Five Kluyveromyces yeasts were grown in concentrated whey permeates under aerobic and anaerobic conditions to produce single-cell protein and ethanol. K. fragilis NRRL Y2415 produced the highest yield of alcohol, 9.1%, and K. bulgaricus ATCC 1605 gave the highest yield of biomass, 13.5 mg/mL. High ash, apparently through Na and K effects, inhibited production of biomass and alcohol. A 0.77% ash was optimum. Lactose utilization was more rapid under aerobic than anaerobic conditions. (NH/sub 4/)/sub 2/SO/sub 4/ and urea supplementation were without effect on yeast growth or were slightly inhibitory. A 1% peptone inclusion gave the highest biomass yield with minimum alcohol production.

• Research Organization: Dept Food Science, Cornell Univ, Ithaca, NY 14853 USA
• OSTI ID: 6010102
• Journal Information: J. Dairy Sci.; (United States), Vol. 65:11
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
59 BASIC BIOLOGICAL SCIENCES
ETHANOL
PRODUCTION
SINGLE CELL PROTEIN
CULTURE MEDIA
GROWTH
INHIBITION
WHEY
YEASTS
ALCOHOLS
FUNGI
HYDROXY COMPOUNDS
INDUSTRIAL WASTES
MICROORGANISMS
ORGANIC COMPOUNDS
PLANTS
WASTES
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