Abstract:
:The overwhelming response towards algal biodiesel production has been well-recognized recently as a sustainable alternative to conventional fuels. Most microalgae cannot grow well at acidic pH. The present study, therefore, investigated whether non-acidophilic microalgae Desmodesmus sp. MAS1 and Heterochlorella sp. MAS3 can be acclimated to extreme-acidic pH for sustainable production of biomass and biodiesel. Growth analysis indicated that both the microalgal strains possessed a passive uptake of CO2 at pH 3.0 with biomass production of 0.25 g dry wt. L-1 in Desmodemus sp. and 0.45 g dry wt. L-1 in Heterochlorella sp.. Flow-cytometry analysis for reactive oxygen species, membrane permeability and neutral-lipids revealed the capabilities of both strains to adapt to the stress imposed by acidic pH. Lipid production was doubled in both the strains when grown at pH 3.0. In-situ transesterification of biomass resulted in 13-15% FAME yield in the selected microalgae, indicating their great potential in biofuel production.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Abinandan S,Subashchandrabose SR,Cole N,Dharmarajan R,Venkateswarlu K,Megharaj Mdoi
10.1016/j.biortech.2018.09.140subject
Has Abstractpub_date
2019-01-01 00:00:00pages
316-324eissn
0960-8524issn
1873-2976pii
S0960-8524(18)31404-4journal_volume
271pub_type
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