Abstract
The effects of temperature, pH and oxygen level onsecondary carotenoids (SC) accumulation in Chlorococcum sp. were investigated. The optimaltemperature, pH and oxygen level for the yields ofsecondary carotenoids and astaxanthin were35 °C, pH 8 and 10% (v/v), respectively. Whilethe ratio (R) of products containing hydroxyl group(s) to those containing keto group (s) increased withthe increase of temperature and pH, R value decreasedwith the level of oxygen. These results indicate thathigher temperature and pH favor the introduction ofhydroxyl group to the corresponding substrates,however, under high oxygen level keto group wasrelatively easy to be added compared to the additionof hydroxyl.
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Liu, BH., Lee, YK. Secondary carotenoids formation by the green alga Chlorococcum sp.. Journal of Applied Phycology 12, 301–307 (2000). https://doi.org/10.1023/A:1008185212724
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DOI: https://doi.org/10.1023/A:1008185212724