Influence of stress factors on growth and pigment production in three Dunaliella species cultivated outdoors in flat-plate photobioreactors

Hamed I., IŞIK O., Ak Çimen B., USLU L., YAŞA KAFKAS N. E., GÜNEY M.

Plant Biosystems, cilt.155, sa.1, ss.179-187, 2021 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 155 Sayı: 1
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1080/11263504.2020.1727985
  • Dergi Adı: Plant Biosystems
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Agricultural & Environmental Science Database, BIOSIS, CAB Abstracts, Environment Index, Veterinary Science Database
  • Sayfa Sayıları: ss.179-187
  • Anahtar Kelimeler: carotenoid, Dunaliella, flat-plate photobioreactors, outdoor algal culture, β-carotene
  • Yozgat Bozok Üniversitesi Adresli: Evet

Özet

Growth and production of carotenoid in three Dunaliella species (Dunaliella salina (Dunal) Teodoresco, Dunaliella bardawil Ben-Amotz & Avron and Dunaliella sp.) were investigated using flat-plate photobioreactors in outdoor conditions with two optical paths (3 cm and 5 cm). The experiment was conducted in duplicate and lasted four weeks during which light intensity, temperature, pH and optical density were checked daily. The pigment production (total carotenoid and chlorophyll a) was monitored every two days. To induce an additional stress besides temperature and light intensity, two different salt concentrations were used, i.e. 6% and 8% NaCl. The highest growth in all treatment groups was noticed for Dunaliella sp. followed by D. bardawil and D. salina. D. salina produced a higher content of carotenoid concentrations corresponding to 5 cm/8% and 5 cm/6% groups; 779.102 ± 0.434 μg.mL−1 and 694.326 ± 0.098 μg.mL−1 were registered at the end of the experiment. The same species had also greater content of β-carotene.