Potentials of macroalgae as feedstocks for biorefinery

► This review focuses on the potential of macroalgae as a biorefinery feedstock. ► Their basic information and background knowledge are summarized. ► Their production status and carbohydrate compositions are investigated. ► Up-to-date macroalgae-based biorefinery technology and research are examined. ► Macroalgae could be utilized as a new promising biomass for low-carbon economy.