Adaptive growth at high temperatures of the lactose-fermenting yeast Kluyveromyces marxianus var. marxianus
✍ Scribed by J. P. Sampaio; Prof. Dr. I. Spencer-Martins
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- English
- Weight
- 234 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0233-111X
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✦ Synopsis
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 ARRHENnrs 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,