关键词: 微藻, 碳水化合物, 发酵, 生物燃料

Abstract: Environmental pollution and the utilization of unrenewable fossil energy source encourage people to explore new energy source. Recently，more attentions have been paid to microalgae-based carbohydrates for biofuel production due to the fast growth，the efficient carbon dioxide fixation and the high carbohydrate accumulating potential of microalgae. Utilization of microalgal-based carbohydrates feedstock for biofuel production has the great potential，but culture scale-up becomes development bottleneck. In this paper，the composition and metabolism of microalgal-based carbohydrates are summarized. The methods of the pretreatment of microalgal-based carbohydrates are introduced，such as hydrolyzation，chemical，ultrasound and so on. In addition，the characteristics of enzymatic and chemical saccharification are comparatively analyzed. Recycling advantages of traditional anaerobic digestions and activated sludge fermentation methods with microalgae carbohydrates for biofuel production are resumed. Moreover，research progress in microalgal-based carbohydrates in producing liquid，gaseous biofuels，economy and industrialization foregrounds are reviewed. Finally，the paper makes a primary summary that more economical，efficient saccharification and fermentation technology shall be the future focus of research and development in microalgal-based carbohydrates for biofuel production.

Key words: microalgal, carbohydrates, fermentation, biofuel