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Effect of Content of Crop Component on the Bioethanol Production  

Lee, Kyung-Eun (Dept. of Bioscience and Biotechnology, The University of Suwon)
Lee, Jae-Yeon (Dept. of Bioscience and Biotechnology, The University of Suwon)
Kim, Keun (Dept. of Bioscience and Biotechnology, The University of Suwon)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.53, no.3, 2008 , pp. 339-346 More about this Journal
Abstract
The contents of starch, moisture, crude protein, crude fat, crude fiber, and ash of different varieties of various crops such as brown rice, barley, corn, sweet potato were analyzed. The average starch contents of brown rice, barley, corn, and sweet potato were $70.1{\pm}0.4\;{\sim}\;72.2{\pm}2.1$, $68.7{\pm}0.2\;{\sim}\;71.4{\pm}1.2$, $67.6{\pm}0.8\;{\sim}\;69.4{\pm}1.8$, and $21.7{\pm}0.9\;{\sim}\;28.3{\pm}0.5%$, respectively. The ground powder of each starchy substrate was suspended in distilled water, and then liquefied, saccharified, and fermented by dried active yeast at 32 for 4 days. By statistical analysis, the effectiveness of the contents of the different components such as starch, moisture, crude protein, crude fat, crude fiber, and ash of the crops on the ethanol production were examined. The results showed that the starch content positively affected the ethanol production in all the tested cereals and sweet potato. In brown rice, ash content affected negatively the ethanol production. In barley, protein content affected negatively the ethanol production, while fiber content affected positively the ethanol production. The sweet potato containing higher content of moisture produced less amount of ethanol.
Keywords
cereals; sweet potato; components; bioethanol; statistical analysis
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