Orange light spectra filtered through transparent colored polyvinyl chloride sheet enhanced pigment content and growth of Arthrospira cells. (January 2021)

• Record Type: Journal Article
• Authors: Kumar, Santosh; Cheng, Jun; Ali Kubar, Ameer; Guo, Wangbiao; Song, Yanmei; Liu, Shuzheng; Chen, Shutong; Tian, Jianglei
• Is Part Of: Bioresource technology. Volume 319(2021)
• Publication Date: 2021-01
• Subjects: Transparent colored PVCS -- Light spectra -- Phycobilisome -- Arthrospira platensis -- Biomass dry weight; 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.2020.124179
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Transparent colored polyvinyl chloride sheets (PVCS) generate filtered light spectra. Filtered light spectra of orange colored PVCS promote microalgal light absorption. Biomass dry weight increased by 61% (3.3 g/L) with exposure to orange light spectra. The chlorophyll-a and carotenoid content were increased by 40% and 29% respectively. Abstract: Microalgae are significantly affected by the spectra composition with various wavelengths. The development of light harvesting pigments can be controlled with specific wavelength of filtered light received by microalgae. Coverage of open raceway pond using transparent colored polyvinyl chloride sheets (PVCS) to filter light spectra, was assessed for the capacity to enhance biomass growth rate. Results showed that orange PVCS filtered light spectra at wavelengths from 480 to 665 nm, increased biomass dry weight (3.3 g/L) by 61% compared with control condition (white PVCS = 350–750 nm). Light spectra filtered through orange PVCS were more easily absorbed by the light harvesting pigment protein complex (phycobilisome) of Arthrospira platensis cells and subsequently transferred to intracellular photosynthesis reaction centers. Therefore, A. platensis cells cultivated with light spectra filtered through orange PVCS contained 62.7 mg/L chlorophyll-a and 23.5 mg/L carotenoid, which were 40% and 29% higher than control condition (with white PVCS).