Laundry detergent and/or fabric care compositions comprising...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 9/42 (2006.01) C11D 3/386 (2006.01) D06M 16/00 (2006.01)

Patent

CA 2331137

The present invention relates to a modified enzyme which comprises a catalytically active amino acid sequence of a cellulolytic enzyme linked to an amino acid sequence comprising a Cellulose Binding Domain (CBD) having a relative binding constant (Kr-a) for binding to amorphous cellulose higher than 2.4l/gcellulose, preferably higher than 3.5l/gcellulose, more preferably higher than 4l/gcellulose, for selective binding and hydrolysis of amorphous cellulose of cotton containing fabrics in a laundry and/or fabric care application. The present invention further relates to laundry detergent and/or fabric care compositions comprising this modified enzyme.

Cette invention concerne une enzyme modifiée qui contient une séquence d'acides aminés active du point de vue catalytique d'une enzyme cellulolytique liée à une séquence d'acides aminés contenant un domaine de liaison de la cellulose présentant une constante de liaison relative (Kr-a) pour se lier à de la cellulose amorphe dans des proportions supérieures à 2,4l/g de cellulose, de préférence supérieures à 3,5l/g de cellulose, et plus préférablement encore dans des proportions supérieures à 4l/g de cellulose, pour effectuer la liaison et l'hydrolyse sélective de la cellulose amorphe de tissus contenant du coton dans une application de nettoyage et/ou d'entretien des tissus. Cette invention concerne en outre des compositions de détergent à lessive et/ou d'entretien des tissus qui renferment l'enzyme modifiée.

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