查看文章

Haematococcus pluvialis Flotow is used in the aquaculture, pharmaceutical and cosmetic industries. The aim of this study was to compare the effect of various stress media and high light intensities on astaxanthin accumulation. The experimental design was achieved by four different stress media and two different light intensities for 14 days of induction period. The astaxanthin concentrations of 29.62mgg⁻¹ and 30.07mgg⁻¹ were obtained in distilled water with CO₂ and N-free medium, respectively, with no significant difference between them at 546μmolphotonsm⁻²s⁻¹. Because of the morphological changes of H. pluvialis, microscopic observation was considered during the induction period to facilitate the selection of stress medium. It was clear that the rate of astaxanthin accumulation was much faster in distilled water with the addition of CO₂. The main point is that, this medium is more economical than others …