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  • 1
    Electronic Resource
    Electronic Resource
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary The surface tension σ and foaminess Σ of (a) unlimited, (b) substrate limited, and (c) oxygen transfer limited growth media of Hansenula polymorpha were measured using methanol, ethanol or glucose as a substrate. The time dependence of σ can be described by the Avrami-Überreiter relationship: log (2.3 log V)=n log t+log b, where V = (σO − σeq/(σt − σeq, and σO, σt and σeq are σ at tM=0, tM=t and tM→∞ (equilibrium value). The constants n and b are functions of the fermentation time tF as long as the growth is unlimited but they are constant in the state of limited growth. With glucose substrate, the foaminess Σ can be presented as a definite function of the time, tDG, which is necessary to attain σeq. With alcohol as a substrate no definite Σ (tDG) function was found.
    Type of Medium: Electronic Resource
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