公开(公告)号：US20100168407A1

公开(公告)日：2010-07-01

申请号：US12063227

申请日：2006-07-24

申请人： Pengcheng Li ,  Zhanyong Guo ,  Song Liu ,  Ronge Xing ,  Huahua Yu ,  Pibo Wang ,  Xiaolin Chen ,  Cuiping Li

发明人： Pengcheng Li ,  Zhanyong Guo ,  Song Liu ,  Ronge Xing ,  Huahua Yu ,  Pibo Wang ,  Xiaolin Chen ,  Cuiping Li

IPC分类号： C08B37/08

CPC分类号： A01N43/16 ,  A61K31/14 ,  C08B37/003

摘要： The invention relates to a novel kind of chitosan derivative, specifically to quaternized carboxymethyl chitosand derivatives and preparation method. Chitosan with different molecular weight reacts with chloroactic acid give rise to carboxymethyl chitosan. After reaction of Schiff based, deoxidized and quaternized, quaternized carboxymethyl chitosan is obtained. This kind of chitosan derivative have better water-solubility and better antifungal activity, which can used in the fields of medicine and agriculture.

摘要翻译： 本发明涉及一种新型壳聚糖衍生物，特别涉及季铵化羧甲基壳聚糖衍生物及其制备方法。 不同分子量的壳聚糖与氯代酸反应产生羧甲基壳聚糖。 在基于Schiff的基础上，脱氧和季铵化后，得到季铵化的羧甲基壳聚糖。 这种壳聚糖衍生物具有更好的水溶性和更好的抗真菌活性，可用于医药和农业领域。

公开(公告)号：US07648969B2

公开(公告)日：2010-01-19

申请号：US10560296

申请日：2003-10-08

申请人： Pengcheng Li ,  Ronge Xing ,  Song Liu ,  Huahua Yu

发明人： Pengcheng Li ,  Ronge Xing ,  Song Liu ,  Huahua Yu

IPC分类号： C08B37/08

CPC分类号： C08B37/003

摘要： The present invention relates to low molecular weight chitosan oligosaccharides and its preparation method. Chitosan oligosaccharides were obtained under microwave irradiation assisted the electrolyte. The method of preparing chitosan oligosaccharides was described as follows: acid solvent containing electrolyte was added to chitosan. The reaction was performed at 480˜800 W for 3˜12 min. After irradiation ceased, the reaction liquid was cooled to room temperature. Then the solution was adjusted to neutrality with 1˜10 M NaOH or KOH and obtained the pale yellow floc. The processes of precipitation, filtering, desiccation and crushing are settled sequentially. Finally, chitosan oligosaccharides were obtained. Method of the present invention makes chitosan degrade to water-soluble chitosan oligosaccharides and it makes some inert substance become active. The method of the present invention can cut down energy consumption, decrease pollution and save time and raw materials. It has applying perspective of industry and potentiality of extensive market.

摘要翻译： 本发明涉及低分子量壳聚糖寡糖及其制备方法。 在微波照射辅助电解质下获得壳聚糖寡糖。 制备壳聚糖寡糖的方法描述如下：将含酸性溶剂的电解质加入到壳聚糖中。 反应在480〜800W进行3〜12分钟。 照射停止后，将反应液冷却至室温。 然后将溶液用1〜10M NaOH或KOH调节至中性，得到淡黄色絮状物。 沉淀，过滤，干燥和粉碎的过程顺序进行。 最后得到壳聚糖寡糖。 本发明的方法使壳聚糖降解为水溶性壳聚糖寡糖，并使一些惰性物质变得活性。 本发明的方法可以降低能耗，减少污染，节省时间和原材料。 它具有广泛市场的行业和潜力的应用视角。

公开(公告)号：US20070089978A1

公开(公告)日：2007-04-26

申请号：US10560296

申请日：2003-10-08

申请人： Pengcheng Li ,  Ronge Xing ,  Song Liu ,  Huahua Yu

发明人： Pengcheng Li ,  Ronge Xing ,  Song Liu ,  Huahua Yu

IPC分类号： C08B37/08

CPC分类号： C08B37/003

摘要： The present invention relates to low molecular weight chitosan oligosaccharides and its preparation method. Chitosan oligosaccharides were obtained under microwave irradiation assisted the electrolyte. The method of preparing chitosan oligosaccharides was described as follows: acid solvent containing electrolyte was added to chitosan. The reaction was performed at 480˜800 W for 3˜12 min. After irradiation ceased, the reaction liquid was cooled to room temperature. Then the solution was adjusted to neutrality with 1˜10 M NaOH or KOH and obtained the pale yellow floc. The processes of precipitation, filtering, desiccation and crushing are settled sequentially. Finally, chitosan oligosaccharides were obtained. Method of the present invention makes chitosan degrade to water-soluble chitosan oligosaccharides and it makes some inert substance become active. The method of the present invention can cut down energy consumption, decrease pollution and save time and raw materials. It has applying perspective of industry and potentiality of extensive market.

摘要翻译： 本发明涉及低分子量壳聚糖寡糖及其制备方法。 在微波照射辅助电解质下获得壳聚糖寡糖。 制备壳聚糖寡糖的方法描述如下：将含酸性溶剂的电解质加入到壳聚糖中。 反应在480〜800W进行3〜12分钟。 照射停止后，将反应液冷却至室温。 然后将溶液用1〜10M NaOH或KOH调节至中性，得到淡黄色絮状物。 沉淀，过滤，干燥和粉碎的过程顺序进行。 最后得到壳聚糖寡糖。 本发明的方法使壳聚糖降解为水溶性壳聚糖寡糖，并使一些惰性物质变得活性。 本发明的方法可以降低能耗，减少污染，节省时间和原材料。 它具有广泛市场的行业和潜力的应用视角。