| Literature DB >> 32238318 |
Denise da Fontoura Prates1, Jessica Hartwig Duarte1, Raquel Guidetti Vendruscolo2, Roger Wagner2, Cristiano Augusto Ballus2, Wellington da Silva Oliveira3, Helena Teixeira Godoy3, Milene Teixeira Barcia2, Michele Greque de Morais4, Elisângela Martha Radmann1, Jorge Alberto Vieira Costa5.
Abstract
LEDs have specific wavelengths that can positively influence the production of microalga biomass and biomolecules of interest. Filling the gaps in the literature, this study evaluated the effect of different LED wavelengths and photoperiods on protein productivities and free amino acid (FAA) profile of Spirulina sp. LEB 18 cultures. The best protein productivity results were obtained in red and green LED cultures using integral and partial photoperiods, respectively. In these experiments, protein productivities increased 2 and 1.6 times, respectively, compared to the control culture using fluorescent light. Green LEDs in partial photoperiod provided also the highest concentrations of essential and non-essential FAA, about 1.8 and 2.3 times higher, respectively, than control cultures. LEDs showed to be a promising sustainable light source for increasing protein productivity and FAA concentration in Spirulina sp. LEB 18 cultures.Entities:
Keywords: Cyanobacteria; Light source; Microalgae; Photoperiod; Protein productivity
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Year: 2020 PMID： 32238318 DOI： 10.1016/j.biortech.2020.123184
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642