Effect of specific irradiance on productivity and pigment and protein production of Porphyridium purpureum (Rhodophyta) semi-continuous culture.

Autor: Borovkov AB; A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, 2 Nakhimov ave., Sevastopol, Russia., Gudvilovich IN; A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, 2 Nakhimov ave., Sevastopol, Russia., Lelekov AS; A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, 2 Nakhimov ave., Sevastopol, Russia., Avsiyan AL; A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, 2 Nakhimov ave., Sevastopol, Russia. Electronic address: anna_avs@ibss-ras.ru.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2023 Apr; Vol. 374, pp. 128771. Date of Electronic Publication: 2023 Feb 21.
DOI: 10.1016/j.biortech.2023.128771
Abstrakt: Porphyridium purpureum is a promising microalga species due to the content of various valuable compounds. In this study, specific irradiance parameter, representing the amount of light energy per unit of microalgae biomass, was introduced. The growth characteristics and pigments and protein accumulation of P. purpureum culture were investigated under semi-continuous mode. Varying dilution rate and surface irradiance resulted in a specific irradiance of 0.2-6.7 W g -1 . Using mathematical modeling, we determined the patterns of changes in biomass, pigments, protein content and productivity of P. purpureum culture depending on specific irradiance. The content of target compounds was maximized under the lowest level of specific irradiance (0.2-1.2 W g -1 ), while the highest productivity of this components was reached under 1.2-1.7 W g -1 . Overall, lower irradiance levels were favorable for P. purpureum cultivation based on the energy consumption and production characteristics of this species.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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