Abstract
Recent developments in photobioreactor technology havemade the production of astaxanthin from Haematococcus pluvialis commercially viable. The coreof our astaxanthin production chain is the AquasearchGrowth Module (AGM), a 25,000 L enclosed andcomputerized outdoor photobioreactor.At Aquasearch's newly expanded facility (dedicatedJanuary 1999), three AGMs (total volume 75,000 L) areused to produce large amounts of clean, fast growing,H. pluvialis. The H. pluvialis biomassproduced in the AGMs is transferred daily to a pondculture system, where carotenogenesis and astaxanthinaccumulation are induced. Following a 5-dayinduction period, the reddened H. pluvialiscells are harvested by gravitational settling. Theharvested biomass, which averages > 2.5 astaxanthinas percent of the dry weight, is transferred to aprocessing building where a high pressure homogenizeris used to rupture the cells' walls. Once the biomasshas been homogenized, it is dried to less than 5%moisture utilizing proprietary drying technology. Thedried product is then ready to be packaged accordingto customer needs.The photobioreactor research program has almostdoubled the performance of the AGMs in the first ninemonths of operations: standing biomass concentrationincreased from 50 to 90 g m-2 and productionincreased from 9 to 13 g m-2 d-1 during thisperiod. Here, we discuss the significance of thesechanges in production parameters to the viability ofcommercial production of astaxanthin and other highvalue products from microalgae.
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Olaizola, M. Commercial production of astaxanthin from Haematococcus pluvialis using 25,000-liter outdoor photobioreactors. Journal of Applied Phycology 12, 499–506 (2000). https://doi.org/10.1023/A:1008159127672
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DOI: https://doi.org/10.1023/A:1008159127672