A green decontamination technology through selective biomineralization of algicidal microorganisms for enhanced astaxanthin production from Haematococcus pluvialis at commercial scale.

Autor: Yu BS; Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, South Korea., Hong ME; Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, South Korea., Sung YJ; Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, South Korea., Choi HI; Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, South Korea., Chang WS; Research Institute, Korea District Heating Corp., 92, Gigok-ro, Giheung-gu, Yongin-si, Gyeonggi-do 17099, South Korea., Kwak HS; Department of Food Science and Engineering, Dongyang Mirae University, 445, Gyeongin-ro, Guro-gu, Seoul 08221, South Korea., Sim SJ; Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, South Korea. Electronic address: simsj@korea.ac.kr.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2021 Jul; Vol. 332, pp. 125121. Date of Electronic Publication: 2021 Apr 06.
DOI: 10.1016/j.biortech.2021.125121
Abstrakt: Currently, there is a lack of an efficient, environmentally-benign and sustainable industrial decontamination strategy to steadily achieve improved astaxanthin production from Haematococcus pluvialis under large-scale outdoor conditions. Here, this study demonstrates for the first time that a CaCO 3 biomineralization-based decontamination strategy (CBDS) is highly efficient in selectively eliminating algicidal microorganisms, such as bacteria and fungi, during large-scale H. pluvialis cultivation under autotrophic and mixotrophic conditions, thereby augmenting the astaxanthin productivity. Under outdoor AT and MT conditions, the average astaxanthin productivity of H. pluvialis using CBDS in a closed photobioreactor system was substantially increased by 14.85- (1.19 mg L -1  d -1 ) and 13.65-fold (2.43 mg L -1  d -1 ), respectively, compared to the contaminated H. pluvialis cultures. Given the exponentially increasing demand of astaxanthin, a natural anti-viral, anti-inflammatory, and antioxidant drug, CBDS will be a technology of interest in H. pluvialis-based commercial astaxanthin production which has been hindered by the serious biological contaminations.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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