Effect of initial biomass density on growth and astaxanthin production of Haematococcus pluvialis in an outdoor photobioreactor

Junfeng Wang, Danxiang Han, Milton R. Sommerfeld, Congming Lu, Qiang Hu

Research output: Contribution to journalArticle

54 Scopus citations

Abstract

Initial biomass density (IBD) is an important factor that affects the viability and productivity of microalgae particularly when sunlight is used for photosynthesis. In this paper, the effect of IBD on photosynthesis, growth, and astaxanthin production of the green microalga Haematococcus pluvialis during the astaxanthin induction stage was studied in a glass column photobioreactor during different seasons. Of seven IBDs, i. e., 0.1, 0.5, 0.8, 1.5, 2.7, 3.5, and 5.0 g L-1 tested, 0.8 g L-1 IBD was optimal and resulted in the highest astaxanthin productivity of 17.1 mg L-1 day-1. Severe photoinhibition of photosynthesis occurred at low IBD (e. g., 0.1 g L-1) cultures, especially in the winter, and severe light limitation to individual cells in high IBD cultures (>2.7 g L-1) were responsible for reduced astaxanthin production. This was the first report quantitatively assessing IBD as the key limiting factor for astaxanthin production in H. pluvialis outdoor cultivation.

Original languageEnglish (US)
Pages (from-to)253-260
Number of pages8
JournalJournal of Applied Phycology
Volume25
Issue number1
DOIs
StatePublished - Jan 1 2013

Keywords

  • Astaxanthin
  • Haematococcus pluvialis
  • Initial biomass density
  • Photobioreactor
  • Photoinhibition

ASJC Scopus subject areas

  • Aquatic Science
  • Plant Science

Fingerprint Dive into the research topics of 'Effect of initial biomass density on growth and astaxanthin production of Haematococcus pluvialis in an outdoor photobioreactor'. Together they form a unique fingerprint.

  • Cite this