A green decontamination technology through selective biomineralization of algicidal microorganisms for enhanced astaxanthin production from Haematococcus pluvialis at commercial scale
- Authors
- Yu, Byung Sun; Hong, Min Eui; Sung, Young Joon; Choi, Hong Il; Chang, Won Seok; Kwak, Ho Seok; Sim, Sang Jun
- Issue Date
- 7월-2021
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Haematococcus pluvialis; Astaxanthin; Algicidal microorganism; tion strategy; Mixotrophic culture mode
- Citation
- BIORESOURCE TECHNOLOGY, v.332
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 332
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/127793
- DOI
- 10.1016/j.biortech.2021.125121
- ISSN
- 0960-8524
- Abstract
- 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 CaCO3 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.
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