tailieunhanh - Biomass and lipid productivity of scenedesmus deserticola under heterotrophic cultivation

The strain S. deserticola can grow well heterotrophically without light and maximum algal biomass was 11,22 g/l after cultivation of 14 days. Highest lipid content under heterotrophic growth was 52,58%, which was about 2,4 times that in photoautotrophic cultivation. | Biomass and lipid productivity of scenedesmus deserticola under heterotrophic cultivation AGU International Journal of Sciences – 2019, Vol. 7 (4), 39 – 48 BIOMASS AND LIPID PRODUCTIVITY OF SCENEDESMUS DESERTICOLA UNDER HETEROTROPHIC CULTIVATION Pham Duy Thanh1 1 Ho Chi Minh City University of Food Information: ABSTRACT Received: 17/10/2018 Biodiesel production from oleaginous microalgae shows great potential as a Accepted: 13/08/2019 promising alternative to conventional fossil fuels. In this experiment, Published: 11/2019 biomass and lipid productivities of S. deserticola under different growth Keywords: conditions were investigated. The heterotrophic experiments were grown in Microalgae, heterotrophic complete darkness to prevent the algae from photosynthesizing. Three growth, heterotrophic carbon sources such as glucose, acetate or glycerol were utilized under cultivation, fatty acid, heterotrophic cultivation. biodiesel, Scenedesmus deserticola The strain S. deserticola can grow well heterotrophically without light and maximum algal biomass was 11,22 g/l after cultivation of 14 days. Highest lipid content under heterotrophic growth was 52,58%, which was about 2,4 times that in photoautotrophic cultivation. Fatty acid profile was analyzed by gas chromatography. Algal oil was dominated by palmitic acid (C16:0), oleic acid (C18:1), linoleic acid (C18:2) and linolenic acid (C18:3) which were desirable feedstocks for biofuel production. The results in this study suggested that S. deserticola is potential candidate for biodiesel production and heterotrophic cultivation is more promising than conventional autotrophic cultivation. 1. INTRODUCTION source in photosynthesis (Zheng, 2013). During Biodiesel from algae oil drew the attention of growth and development, some microalgae many scientists over the past decade and is species have heterotrophic growth mechanisms, considered a biodegradable fuel (Zheng, .