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2004•Journal of Zhengzhou Institute of TechnologyRequires access

PREPARATION OF REFINING XYLITOL FROM CORNCOB

Li Yan

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Abstract

Refining xylitol was prepared from corncob through the processing of washing,drying,crashing (granularity 3～5 mm),acid hydrolysis,neutralization,evaporation,bleaching,ion exchanging,hydrogenation,concentration and crystallization.The effect of hydrolysis conditions on the yield of xylitol had been investigated by orthogonal test.The optimal parmeters were as follows:the hydrochloric acid concentration 2.0%,hydrolysis pressure 0.1 MPa,temperature 120 ℃,reaction time 4 h.The yield of refining xylitol was 60.2%.

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What this paper is about

Refining xylitol was prepared from corncob through the processing of washing,drying,crashing (granularity 3～5 mm),acid hydrolysis,neutralization,evaporation,bleaching,ion exchanging,hydrogenation,concentration and crystallization.The effect of hydrolysis conditions on the yield of xylitol had been investigated by orthogonal test.The optimal parmeters were as follows:the hydrochloric acid concentration 2.0%,hydrolysis pressure 0.1 MPa,temperature 120 ℃,reaction time 4 h.The yield of refining xylitol was 60.2%.

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Available abstract

Refining xylitol was prepared from corncob through the processing of washing,drying,crashing (granularity 3～5 mm),acid hydrolysis,neutralization,evaporation,bleaching,ion exchanging,hydrogenation,concentration and crystallization.The effect of hydrolysis conditions on the yield of xylitol had been investigated by orthogonal test.The optimal parmeters were as follows:the hydrochloric acid concentration 2.0%,hydrolysis pressure 0.1 MPa,temperature 120 ℃,reaction time 4 h.The yield of refining xylitol was 60.2%.

Key concepts: Corncob, Xylitol, Refining (metallurgy), Hydrolysis, Chemistry, Yield (engineering), Hydrochloric acid, Crystallization

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