A review of amino acids extraction from animal waste biomass and reducing sugars extraction from plant waste biomass by a clean method

In this paper, the current status of amino acid extraction from animal waste biomass and reducing sugar from plant waste biomass by hydrolysis in subcritical and supercritical water was reviewed. The properties of subcritical and supercritical water, reactor systems, reaction kinetics, reaction mechanism, and effects of different factors (temperature, time, and catalyst) on yield were summarized. Subcritical and supercritical water hydrolysis is a biorefinery approach for both protein and sugar—one treatment. Hydrolysis at subcritical and supercritical conditions may provide an efficient process for recovering useful chemicals from biomass wastes and for the disposal of biomass wastes.