Authors: Barbara Stachowiak
Publish Date: 2013/08/31
Volume: 22, Issue: 4, Pages: 1033-1038
Abstract
The aim of the study was to select optimal illumination for Xanthophyllomyces dendrorhous DSM 5626 and its mutants 26UV 10BE 13B and 34B for astaxanthin production The strains were cultivated on YM medium at an illumination of 0–5000 lx The highest yields of astaxanthin were found in cultures at 600 lx The maximum pigment production for the parental strain was 095 mg/L and 019 g/kg dry cell weight DCW while for mutants 123–151 mg/L and 034–039 g/kg DCW It was calculated that the application of adequate values of illumination within the range of 670–718 lx determined on the basis of regression models may improve astaxanthin production by approximately 5–15 depending on the strain This was confirmed in the verification experiments for the parental strain and mutants 10BE 13B 26UV but for 34B at 718 lx the volumetric astaxanthin production was found to be higher than predicted by the model
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