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

Journal Article · Fri Jan 01 04:00:00 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), Journal Name: J. Dairy Sci.; (United States) Vol. 65:11; ISSN JDSCA
• Country of Publication: United States
• Language: English

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59 BASIC BIOLOGICAL SCIENCES
ALCOHOLS
CULTURE MEDIA
ETHANOL
FUNGI
GROWTH
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