음식물류 폐기물로부터 바이오에탄올의 생산 = Production of Bio-ethanol from Food Wastes

다국어 초록 (Multilingual Abstract)

This study is aimed to produce the bio-ethanol from food wastes. Ethanol production from food wastes has the advantages such as renewable energy production as well as organic wastes treatment. To produce ethanol from food wastes, it is necessary to convert carbohydrate to glucose by enzyme, and the glucose to ethanol by yeast. This study is including the optimal reaction conditions such as temperature, time, adding amount of enzyme and yeast, initial pH and reducing sugar amount at the saccharification and fermentation processes. The reducing sugar was produced as much as 220 g/L (max. 240 g/L) when the enzymes such as Spirizyme Plus FG® and Viscozyme L® as glucoamylase and complex carbohydrases, respectively, were used in saccharification process of food wastes. The concentration of ethanol produced was 45.1 g/L (5.82%) at the condition of pH 4, fermentation temperature of 30℃, fermentation period of 2 days and initial reducing sugar of 220 g/L. It is well known that to extract the ethanol for fuel economically from the fermented solution with an adsorption recovery process, the concentration of ethanol in fermented one must be above of minimum 4.5% (about 36 g/L).

참고문헌 (Reference)

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