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Characterization of isolated UV-C-irradiated mutants of microalga Chlorella vulgaris for future biofuel application

Author

Listed:
  • Jessa DG. Carino

    (University of the Philippines Diliman)

  • Pierangeli G. Vital

    (University of the Philippines Diliman)

Abstract

Microalgae-based biofuel is considered as one of the most promising sources of alternative energy because it is sustainable and does not pose threats to the environment and food security. However, attempts in improving microalgal strains to attain the ideal characteristics for biofuel application are yet to unravel. In this study, random UV-C mutagenesis was employed to generate starch-deficient mutants of indigenous Chlorella vulgaris to enhance its productivity. Out of 872 colonies, two isolated mutants (cvm5 and cvm6) were isolated and showed significant increase in cell concentrations by > 1.47-fold and > 1.04-fold, respectively. However, mutant cells exhibited smaller in size which might contributed to the significant decrease in their biomass. Moreover, gathered data revealed that the total lipid content of cvm5 was enhanced significantly (75%, > 1.3-fold increase). Additionally, triacylglycerol (TAG) content of the said mutant constitutes 48% of the dry cell weight (DCW) while cvm6 consist of 41% of the DCW. These promising and novel findings suggest that the two generated and isolated mutants are good candidates for future commercial biofuel production, especially in the Philippines. In addition, these findings may contribute on the prior knowledge of the usage of UV-C for microalgal strain development.

Suggested Citation

  • Jessa DG. Carino & Pierangeli G. Vital, 2023. "Characterization of isolated UV-C-irradiated mutants of microalga Chlorella vulgaris for future biofuel application," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 25(2), pages 1258-1275, February.
    • Handle: RePEc:spr:endesu:v:25:y:2023:i:2:d:10.1007_s10668-021-02091-8
    DOI: 10.1007/s10668-021-02091-8
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    References listed on IDEAS

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