Abstract

This paper discusses about saccharification behavior of rice hull by Hot-compressed-water (HCW, -300°C, -10MPa) treatment using a percolation type reactor. By this HCW treatment, rice hulls were converted to water solubles (WS). Its yield was 84.3wt%. At the temperature ranging from 140°C to 200°C, hemicellulose (arabinoxylan) was mainly hydrolyzed to arabinose, xylose and xylooligosaccharides. Above 230°C, cellu-lose was hydrolyzed mainly to glucose, fructose and cellooligosaccharides. Obtained saccharides can be used for various chemicals such as functional food and feedstock for ethanol and lactic acid fermentation.

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