发明授权
- 专利标题： Liquefying alkaline .alpha.-amylase, process for producing the same, and detergent composition containing the same
- 专利标题（中）： 液化碱性α-淀粉酶，其制备方法和含有它的洗涤剂组合物
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申请号： US362493申请日： 1995-01-11
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公开(公告)号： US5635468A公开(公告)日： 1997-06-03
- 发明人: Katsutoshi Ara , Katsuhisa Saeki , Kazuaki Igarashi , Mikio Takaiwa , Takaaki Uemura , Shuji Kawai , Susumu Ito , Hiroshi Hagihara , Tohru Kobayashi , Atsushi Tanaka , Eiichi Hoshino
- 申请人： Katsutoshi Ara , Katsuhisa Saeki , Kazuaki Igarashi , Mikio Takaiwa , Takaaki Uemura , Shuji Kawai , Susumu Ito , Hiroshi Hagihara , Tohru Kobayashi , Atsushi Tanaka , Eiichi Hoshino
- 申请人地址： JPX Tokyo
- 专利权人： Kao Corporation
- 当前专利权人： Kao Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX5-117392 19930519
- 主分类号： C11D3/386
- IPC分类号： C11D3/386 ; C12N9/28
摘要：
The present invention relates to a liquefying alkaline .alpha.-amylase having the enzymatic properties described below, a production process thereof and a detergent composition containing the same.1) Action:It hydrolyzes .alpha.-1,4-glucosidic linkages in starches, amylose, amylopectin and partial degradation products thereof and from amylose, forms glucose (G1), maltose (G2), maltotriose (G3), maltotetraose (G4), maltopentaose (G5) and maltohexaose (G6). It however does not act on pullulan.2) Isoelectric point:It has an isoelectric point higher than 8.5 when measured by an isoelectric focusing electrophoresis.The amylase according to the present invention has a liquefying activity capable of permitting degrading starches and starchy polysaccharides at high random, and has an optimum pH on the alkaline side. Owing to the high isoelectric point, it can be purified readily. Detergents with the amylase incorporated therein have excellent detergency especially against the soil of smeared food.
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