Novel amylolytic enzymes derived from the b. licheniformis...

Details Novel amylolytic enzymes derived from the b. licheniformis... Novel amylolytic enzymes derived from the b. licheniformis...

C - Chemistry, Metallurgy

12

N

C12N 15/56 (2006.01) C11D 3/386 (2006.01) C12N 9/28 (2006.01) C12P 19/14 (2006.01) C12S 3/12 (2006.01) C12S 11/00 (2006.01) D06M 16/00 (2006.01) C12C 7/00 (2006.01) C12P 7/06 (2006.01) D06L 1/12 (2006.01)

Patent

CA 2194571

The present invention relates to novel amylolytic enzymes having improved characteristics for the use in starch degradation, in textile or paper desizing and in household detergent compositions. The disclosed .alpha.-amylases show surprisingly improved properties with respect to the activity level and the combination of thermostability and a higher activity level. These improved properties make them more suitable for the use under more acidic or more alkaline conditions. The improved properties allow also the reduction of the Calcium concentration under application conditions without a loss of performance of the enzyme.

L'invention concerne de nouvelles enzymes amylolytiques dont les caractéristiques améliorées sont utiles dans la dégradation de l'amidon, dans le désencollage de textiles ou du papier, ainsi que dans des compositions détergentes domestiques. Les alpha -amylases décrites démontrent des propriétés étonnamment améliorées sous l'angle de leur niveau d'activité ainsi que sous celui de la combinaison d'une thermostabilité et d'un niveau d'activité supérieur, propriétés qui rendent ces enzymes plus appropriées à une utilisation dans des conditions plus acides ou moins alcalines, et permettent également de réduire la concentration en calcium sous certaines conditions d'utilisation, sans altération du pouvoir performant de l'enzyme.

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