초록
<P><B>Abstract</B></P> <P>The production of bioethanol from seaweeds using acid hydrolysis and the enzymatic saccharification was studied. Red seaweed (<I>Gelidium amansii</I>), brown seaweed (<I>Laminaria japonica</I>), and green seaweed (<I>Codium fragile</I>) were selected, and the characteristics of their conversion to bioethanol were analyzed. The optimum conditions of the dilute acid hydrolysis preprocessing for bioethanol production from the seaweed were a reaction temperature of 150°C, sulfuric acid content of 5.0wt.%, and reaction time of 60min. The seaweeds listed in order of bioethanol conversion performance are red seaweed>brown seaweed>green seaweed. The optimum dosage of enzyme was 2.0mL per 10g of seaweed. The optimal fermentation conditions for bioethanol production using seaweed included a commercial yeast dosage of 30wt.% and a fermentation time of 3 days.</P>