Effects of various amino acids as organic nitrogen sources on the growth and biochemical composition of Chlorella pyrenoidosa. (December 2015)

• Record Type: Journal Article
• Authors: Zhang, Weiguo; Zhang, Zhenhua; Yan, Shaohua
• Is Part Of: Bioresource technology. Volume 197(2015)
• Page Start: 458
• Page End: 464
• Publication Date: 2015-12
• Subjects: Microalgae -- Amino acid -- Growth -- Biochemical composition; 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.2015.08.100
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: The effects ofl -amino acids on the algal growth were different. The effects ofl -amino acids on the algal biochemical composition were different. Tenl -amino acids were available nitrogen sources for Chlorella pyrenoidosa . Asp and Arg were the best two organic nitrogen sources in this study. Abstract: This study investigated the effects of eighteenl -amino acids on the growth and biochemical composition of Chlorella pyrenoidosa . Under the nitrate deficiency condition, tenl -amino acids were found to exert stronger stimulative effects on the algal growth than the other amino acids. After 10-day culture, addition of 0.5 g L −1 the above mentioned ten amino acids significantly increased the cellular protein contents by 441.3–110.8%, respectively, and significantly decreased the carbohydrate contents by 60.7–16.2%, respectively. Under the normal nitrate condition, the cellular biochemical composition was not significantly affected by addition of serine, leucine, proline, aspartic acid, asparagine, and glycine, whereas addition of aspartic acid and arginine increased the algal biomass by 110.2% and 62.8% compared with the control. Finally, the significance of this work in the biotechnological application of culturing C. pyrenoidosa in organic wastewater rich in amino acids was further discussed.