Abstract: Advances in commercial biomass products and bioactive compounds of microalgae were reviewed.Some microalgae,such as Arthrospira platensis, Chlorella vulgaris, Dunaliella salina, and Haematococcus pluvialis, had been explored and applied in the nutritions and health foods.Moreover,a number of bioactive substances,such as β-carotene,astaxanthin,phycocyanin,polyunsaturated fatty acids (PUFAs),and bioactive polysaccharides,had also been refined from microalgae and applied in the nutraceutical,cosmeceutical and pharmaceutical applications.Based on their high species diversity,fast developing in genetic engineering and metabolic engineering,microalgae have great potential for development of natural products.

Key words: microalgae, bioactive compounds, biomass products, microalgal biotechnology