Microalgae can grow in different environmental conditions. Especially, microalgae can convert carbon dioxide and other wastes (such as wastewater) into useful substances, such as bioenergy (bio-hydrogen, biodiesel, and bio-ethanol fuels, etc.) and functional foods (polyunsaturated fatty acids, astaxanthin, and lutein). In this review, we summarized resource of microalgae, cultural methods of microalgae, and potential of microalgae as bioenergy and functional foods.
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