Improvement of ethanol production using green alga Chlorococcum minutum
Autor: | Narravula Raga Sudha, D. Varaprasad, Dokka Narasimham, Thummala Chandrasekhar, Yeduguri Himabindu, Meruva Keerthi Kumari, Kurva Paramesh, Shaik Nazaneen Parveen |
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Rok vydání: | 2019 |
Předmět: |
biology
Chemistry 0208 environmental biotechnology Chlamydomonas reinhardtii Biomass 02 engineering and technology General Medicine 010501 environmental sciences Raw material biology.organism_classification complex mixtures 01 natural sciences Yeast 020801 environmental engineering Biofuel Chlorococcum Environmental Chemistry Ethanol fuel Fermentation Food science Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology |
Zdroj: | Environmental Technology. 42:1383-1391 |
ISSN: | 1479-487X 0959-3330 |
Popis: | Incessant depletion of fossil fuels urges the governments and non-governmental organizations to invest more on renewable energy sectors including generation of biofuels such as bioethanol. Production of ethanol from algal feedstock has been an interesting area of research in recent times. In the present investigation, feedstock of a green alga Chlorococcum minutum was selected for ethanol production and compared with feedstock of model alga Chlamydomonas reinhardtii. Both the species were grown under in vitro conditions using universal tris-acetate-phosphate (TAP) medium with various concentrations and combinations of vitamins such as thiamin, biotin and cobalamin (B1, B7 and B12) to enhance the biomass in turn reducing sugars in both the algal cultures. Later, these algal feedstocks were used for the production of ethanol under fermentation conditions using yeast. Reducing sugars were more in both the algal cultures grown in Cr3 or Cm3 media (TAP with 0.8 g/L of B1, 0.004 g/L of B7 & 0.004 g/L of B12) and also in Cr2 or Cm2 media (TAP with 0.4 g/L of B1, 0.002 g/L of B7 & 0.002 g/L of B12). In extent, the enhancement of ethanol production was noticed in C. reinhardtii (33.57 g/L) and C. minutum (46.97 g/L) from the feedstocks grown in Cr3 or Cm3 media when compared with feedstocks grown in other vitamin combinations or without vitamin assistance. Specifically, feedstock of C. minutum generated more output at 48 h when compared with model alga. The present work may be useful for the production of ethanol at a commercial level. |
Databáze: | OpenAIRE |
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