Abstract
The economic feasibility of the next generation algal biofuels rely largely on the simultaneous production of high-value added bioproducts (HVABs) in these photosynthetic cell factories. In this study, a newly isolated indigenous microalga belonging to selenastraceae family Monoraphidium sp. (designated as CABeR41) has been isolated and characterized for their relevant biofuel precursors along with other HVABs i.e., tocopherols. Our preliminary datasets demonstrates accumulation of higher amounts of lipids (266.6 mg g-1dcw) along with anti-oxidant molecules such as α- and δ-tocopherols (456 µg g-1 dcw and 974 µg g-1 dcw) simultaneously, when subjected to nutrient deprivation. The total tocopherol content has been increased in nitrogen deplete conditions to 1450.24 µg g-1 dcw from 638.2 µg g-1 dcw. In conclusion, bioprospecting of new isolates from natural habitats and fine tuning of specific conditions without compromising growth will have potential for developing into an sustainable industrial strain for concomitantly production of biofuels and bioproducts.
Highlights
Global population demands and rapid industrialization have led to remarkably high consumption of natural petroleum, creating urgency to look for alternative, renewable sources (Gao et al, 2019)
We further evaluate the impact of the stress phenomenon on photosynthetic activity and characterized few high-value-added bioproducts (HVABs), such as tocopherols, to understand their role in oxidative damage within these microalgal cells
The indigenous strain isolated from Dharamshala (India) was morphologically identical to the Selenestraceae family with spindle shape and tapering toward apices
Summary
Global population demands and rapid industrialization have led to remarkably high consumption of natural petroleum, creating urgency to look for alternative, renewable sources (Gao et al, 2019). Microalgae are photosynthetic microorganisms fixing ∼9% of solar energy to generate biomass efficiently compared to terrestrial plants, sequestering ∼513 tons ha−1 year−1 of atmospheric CO2 without competing for arable land with food crops (Chen et al, 2018). Microalgae are sustainable and potential feedstock for biofuels and other high-value-added bioproducts (HVABs), such as carotenoids, polyunsaturated fatty acids (PUFAs), and vitamins (Durmaz, 2007; Borowitzka, 2013; Skjånes et al, 2013; Paliwal et al, 2016). Strategies for the accumulation of lipids and carotenoids can be triggered by stress
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