Adaptive growth at high temperatures of the lactose‐fermenting yeast  Kluyveromyces marxianus  var.  marxianus | Zendy

Sampaio J. P. | Zendy; SpencerMartins I. | Zendy

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Adaptive growth at high temperatures of the lactose‐fermenting yeast Kluyveromyces marxianus var. marxianus

Author(s) -

Sampaio J. P.,

SpencerMartins I.

Publication year - 1989

Publication title -

journal of basic microbiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.58

H-Index - 54

eISSN - 1521-4028

pISSN - 0233-111X

DOI - 10.1002/jobm.3620290115

Subject(s) - kluyveromyces marxianus , lactose , yeast , growth rate , fermentation , arrhenius equation , strain (injury) , biomass (ecology) , food science , chemistry , biology , biochemistry , saccharomyces cerevisiae , activation energy , organic chemistry , mathematics , agronomy , geometry , anatomy

The temperature profile of growth and death rates of a strain of Kluyveromyces marxianus var. marxianus was found to be essentially dissociative, with an optimum temperature for growth at around 38 °C and sustained exponential growth up to 43–44 °C. At temperatures near the maximum temperature for growth a second growth period was observed. This did not correspond to the second branch in the ARRHENIUS plots characteristic of associative profiles, since growth was not balanced and after a while the growth rate increased to values similar to those of the first period. The biomass yield on lactose was not dependent on the growth temperature, a behaviour typical of yeast strains with dissociative temperature profiles.

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