Growth and carotenoids content of yeast Rhodosporidium diobavatum IMB Y-5023 in natural and synthetic media

Iu. Ielchishcheva*, └. Goltvianskiy

Research Institute of Biology, V. N. Karazin Kharkiv National University
4, Svobody Sq., Kharkiv 61022, Ukraine
yul18424060@yandex.ru

The growth peculiarities, biomass yield, carotenoids content and their qualitative composition of yeast R. diobovatum IMB Y-5023 in natural and synthetic media were studied. It was established that the natural nutrient media provide more intensive growth and higher biomass yield of R. diobovatum IMB Y-5023 as compared to synthetic nutrient medium. In all studied media R.ádiobovatum IMB Y-5023 culture entered stationary phase and extinction phase within 96 h and 120 h of cultivation, respectively. The highest content of total carotenoids was observed after 120 h of cultivation. Qualitative composition of yeast pigments after cultivation in in all studied media was similar and included β-carotene, astaxanthin and lycopene, whereas quantitative composition was significantly different. It was shown that in order to get the highest biomass and carotenoid yield in R. diobovatum IMB Y-5023 culture the cultivation duration should be at least 5 days.


Keywords: Rhodosporidium diobovatum IMB Y-5023, cultivation duration, biomass, carotenoids


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