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Du Yuguang, Liu Qishun, Guo Zhenchu, Bai Xuefang: N-nicotinoyl chitosan oligosaccharide and preparation method thereof. Dalian Glycobio, machi, October 17, 2007: CN200710011123

The invention discloses a N-nicotinoyl chitosan. It is characterized in that : it is a mixture, the average molecular weight is 800-6000, and the deacetylation degree of the mixture is 50%-100%, N-nicotinoyl substitution is 30%-100%. The inventive product possesses functions for reducing blood fat, ...


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Du Yuguang, Guo Zhenchu, Liu Qishun, Bai Xuefang: N-phenylpropenoyl chitosan oligosaccharide and preparation thereof. Dalian Institute Of Chemical Physics, Cas, machi zhouxiu mei, October 22, 2008: CN200710011034

The invention relates to chito-oligosaccharide, in particular to an N-benzene acryloyl chito-oligosaccharide and the preparation thereof; wherein, the chito-oligosaccharide is provided with mixed components with the average molecular weight from 800 to 6000 and the degree of deacetylation from 80 to ...


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DU Yuguang, LIU Qishun, YANG Fengli, BAI Xuefang, ZHAO Jingmei: 一种催化碳水化合物制备5-羟甲基糠醛的方法, PROCÉDÉ DE PRÉPARATION DE CATALYSE DU GLUCIDE EN 5-HYDROXYMÉTHYLFURFURAL, PREPARATION METHOD OF CATALYZING CARBOHYDRATE INTO 5-HYDROXYMETHYLFURFURAL. DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES, DU Yuguang, LIU Qishun, YANG Fengli, BAI Xuefang, ZHAO Jingmei, SHENYANG PATENT & TRADEMARK AGENCY ACADEMIA SINICA, June 7, 2012: WO/2012/071708

A solid acid catalyst containing Tantalum compound which is suitable for converting a carbohydrate into 5-hydroxymethylfurfural (HMF). The catalyst has high catalytic activity, selectivity and stability in the preparation of HMF by dehydrating a saccharide. The reaction is carried out in a mild cond ...


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Du Yuguang, Liu Qishun, Cao Hailong, Bai Xuefang: Method for preparing 2,5-dimethyl furan from 5-hydroxymethyl furfural. Dalian Institute of Chemistry and Physics, Chinese Academy of Sciences, Ma Chi, Zhou Xiumei, May 20, 2009: CN200710158287

The invention relates to a method for preparing 2.5-di-methyl furan (DMF) by using 5-hydroxymethyl furfural (HMF). Particularly, an HMF solution is catalyzed by a catalyst to react under proper temperature and pressure to prepare the 2.5-di-methyl furan (DMF). The method has high yield and products ...


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Du Yuguang, Liu Qishun, Cao Hailong, Bai Xuefang: Method for preparing 5-hydroxymethyl furfural from fructose source biomass. Dalian Institute of Chemistry and Physics, Chinese Academy of Sciences, Ma Chi, Zhou Xiumei, May 20, 2009: CN200710158288

The invention relates to a method for preparing 5-hydroxymethyl furfural (HMF), an important platform compound, by directly using a fructose source biomass. The method for preparing the HMF is mainly divided into two steps: firstly, a monosaccharide solution is obtained by the transformation of poly ...


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Jiang Hongtao, Liu Qishun, Liu Yuxin: Full artificial seedling nursing technology for sargassum thunbergii. Xigang Aquatic Stichopus Japonicuns Original Species Form, Weihai, zhouwei zeng, April 11, 2007: CN200610069922

The present invention relates to seedlings raising technology for seaweed, especially relates to a artificial seedlings raising technology for rattailed algae, comprising breeding and gathering colza, discharging and fecundating of sperms and germ cell, gathering oosperms, cultivating sprout inside ...