Abstract
Abstract The recent scarcity of several marine stocks in Japan is a serious problem. Aquaculture has been increasing, but requires large amounts of marine microalgae as a food source. Therefore, this study was aimed at developing a system to mass-produce the microalgae Pavlova , using artificial light sources. Pavlova cells were grown under white, red, green, and blue fluorescent lamps. The highest cell density was obtained after 8-9 days of culture under white fluorescent lamps. The highest rate of oxygen generation by Pavlova cells was found at photosynthetic photon flux densities (PPFD) of 300 to 500 µmol m -2 s -1 in cultures grown under the white fluorescent lamps. Pavlova cells cultured under other cotored fluorescent lamps generated maximal oxygen rates at PPFD around 150 µmol m -2 s -1 .
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