Journal
BIORESOURCE TECHNOLOGY
Volume 193, Issue -, Pages 315-323Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.06.107
Keywords
Microalgae; Sodium bicarbonate; Nutritional starvation; Neutral lipid; Carbohydrate
Funding
- CSIR
- [CSC 0203]
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The aim of the present study was to find out the optimum sodium bicarbonate concentration to produce higher biomass with higher lipid and carbohydrate contents in microalgae Scenedesmus sp. CCNM 1077. The role of bicarbonate supplementation under different nutritional starvation conditions was also evaluated. The results clearly indicate that 0.6 g/L sodium bicarbonate was optimum concentration resulting in 20.91% total lipid and 25.56% carbohydrate along with 23% increase in biomass production compared to normal growth condition. Addition of sodium bicarbonate increased the activity of nutrient assimilatory enzymes, biomass, lipid and carbohydrate contents under different nutritional starvation conditions. Nitrogen starvation with bicarbonate supplementation resulted in 54.03% carbohydrate and 34.44% total lipid content in microalgae Scenedesmus sp. CCNM 1077. These findings show application of bicarbonate grown microalgae Scenedesmus sp. CCNM 1077 as a promising feedstock for biodiesel and bioethanol production. (C) 2015 Elsevier Ltd. All rights reserved.
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