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

Byung Sun Yu, Min Eui Hong, Young Joon Sung, Hong Il Choi, Won Seok Chang, Ho Seok Kwak, Sang Jun Sim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

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.

Original languageEnglish
Article number125121
JournalBioresource technology
Volume332
DOIs
Publication statusPublished - 2021 Jul

Keywords

  • Algicidal microorganism
  • Astaxanthin
  • CaCO biomineralization-based decontamination strategy
  • Haematococcus pluvialis
  • Mixotrophic culture mode

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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