Effects of nitrogen source availability and bioreactor operating strategies on lutein production with Scenedesmus obliquus FSP-3. (May 2015)

• Record Type: Journal Article
• Authors: Ho, Shih-Hsin; Xie, Youping; Chan, Ming-Chang; Liu, Chen-Chun; Chen, Chun-Yen; Lee, Duu-Jong; Huang, Chieh-Chen; Chang, Jo-Shu
• Is Part Of: Bioresource technology. Volume 184(2015)
• Page Start: 131
• Page End: 138
• Publication Date: 2015-05
• Subjects: Microalgae -- Scenedesmus obliquus -- Lutein -- Light intensity shift -- Bioreactor strategy; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2014.10.062
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: N source/concentration were optimized for better lutein production from microalgae. The light intensity shift strategy enhanced lutein content of S. obliquus FSP-3. Semi-continuous operation improved the productivity of lutein from microalgae. The highest lutein productivity of 6.01 mg/L/day is high than most reported values. Abstract: In this study, the effects of the type and concentration of nitrogen sources on the cell growth and lutein content of an isolated microalga Scenedesmus obliquus FSP-3 were investigated. With batch culture, the highest lutein content (4.61 mg/g) and lutein productivity (4.35 mg/L/day) were obtained when using 8.0 mM calcium nitrate as the nitrogen source. With this best nitrogen source condition, the microalgae cultivation was performed using two bioreactor strategies (namely, semi-continuous and two-stage operations) to further enhance the lutein content and productivity. Using semi-continuous operation with a 10% medium replacement ratio could obtain the highest biomass productivity (1304.8 mg/L/day) and lutein productivity (6.01 mg/L/day). This performance is better than most related studies.