Optimization of Photoperiod Treatment for Enhanced Biomass Production and Primary Metabolite Content in Euglena sp. Strain Isolated from Yogyakarta, Indo; تحسين المعالجة الضوئية لتعزيز إنتاج الكتلة الحيوية ومحتوى المستقلب الأولي في Euglena sp. سلالة معزولة من يوجياكرتا، إندونيسيا

Cultivating microalgae as an alternative energy resource requires the optimization of the cultivation process. Euglena is a biofuel microalga with proteins, essential amino acids, vitamins C and E, lipids, beta carotene, and beta-1,3-glucan (paramylon). Light intensity and photoperiod are crucial factors in determining microalgae biomass production because of their relationship to maximum photosynthesis efficiency. As a result, optimising growth conditions in microalgae cultivation is critical for maximising productivity. This study looked at how different photoperiod treatments (12:12, 14:10, 16:8, 18:6, and 24:0 h) affected the growth, biomass, lipid, carbohydrates, and protein content of Euglena sp. cultures in a modified CM (Cramer-Myers) medium. The 18:6 photoperiod treatment produced the highest specific growth rate, biomass, lipid carbohydrate, and protein content, according to the study's findings. The biomass concentration was 0.4190.184 g/L, and the specific growth rate was 5.960.66 (OD680/OD680/hx10-3). The lipid concentration was 0.2030.078 g/L, the carbohydrate concentration was 378.061252.135 mg/mL, and the protein concentration was 371.142107.126 g/L. © (2023). All Rights Reserved.