Enhancement of docosahexaenoic acid (DHA) and beta-carotene production in Schizochytrium sp. using symbiotic relationship with Rhodotorula glutinis

Şahin D., Altindag U. H., Tas E.

PROCESS BIOCHEMISTRY, vol.75, pp.10-15, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 75
  • Publication Date: 2018
  • Doi Number: 10.1016/j.procbio.2018.09.004
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.10-15
  • Keywords: Schizochytrium sp., Rhodotorula glutinis, Symbiosis, Omega 3 fatty acids, DHA, Beta-carotene, MICROALGA CHLORELLA-VULGARIS, POLYUNSATURATED FATTY-ACIDS, LIPID PRODUCTION, MIXED CULTURE, YEAST, STRATEGY
  • Istanbul Technical University Affiliated: Yes


The aim of the study is to enhance the docosahexaenoic acid (DHA) and beta-carotene production yields in Schizochytrium sp. by forming a symbiotic relationship with yeast cell Rhodotorula glutinis. Schizochytrium sp. is one of the most studied microalgae for DHA production. On the other hand, Rhodotorula glutinis is well known as carotenoid-producing yeast. Here, mixed culture of Schizochytrium sp. and Rhodotorula glutinis was used, for the first time, to enhance the yields for DHA and beta-carotene. The cells were recovered, biomass, lipid content, DHA and beta-carotene yields were analyzed. GC-FID and HPLC were used for lipid content analysis and betacarotene yield, respectively. Cell dry weight was increased similar to 2.6 fold while DHA and beta-carotene yields were increased similar to 1.18 and similar to 1.76 fold respectively in co-culture medium compared to Schizochytrium-monoculture. The results highlight the possibility of using heterotroph microalgae and yeast cells in co-culture environment to enhance DHA yield along with beta-carotene production.