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Haematococcus pluvialis was modified for higher astaxanthin production compatible with the superiorities of high biomass and high activity by three-stage mutagenesis breeding. UV irradiation mutants named UV11-4 made an increase on cell dry weight, but showed a longer growth circle than the wild type. On the basis of UV mutants, ethyl methane sulphonate (EMS) mutants E2-5 cut down the latent phase,...
Fed-batch culture and the transformation conditions of Haematococcus pluvialis in a 5L photobioreactor were investigated. Methods of feeding model, low temperature at night and proper feeding time were used to increase both cell biomass and cell activity. Dry cell weight of 1.87g/L which was 2.0-fold of batch culture and the specific growth rate of 0.43d−1 suggested the superduper results of these...
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