Oxidizing enzymes in the manufacture of paper materials

Details Oxidizing enzymes in the manufacture of paper materials Oxidizing enzymes in the manufacture of paper materials

D - Textiles, Paper

21

C

D21C 9/08 (2006.01) C12N 9/02 (2006.01) D21C 5/00 (2006.01) D21C 5/02 (2006.01) D21C 9/10 (2006.01) D21H 21/02 (2006.01)

Patent

CA 2461447

The use of fatty acid oxidizing enzymes in the manufacture of paper materials, such as paper, linerboard, corrugated paperboard, tissue, towels, corrugated containers and boxes. Examples of fatty acid oxidizing enzymes are oxygenases classified as EC 1.13.11. including any of the sub-classes thereof, such as lipoxygenase, EC 1.13.11.12. The effect of these enzymes is that the deposition of pitch is reduced, and bleaching and de-inking effects are also observed on the paper pulp and the resulting paper material. The fatty acid oxidizing enzyme can be used in combination with a substrate, with proteases, lipases, xylanases, cutinases, oxidoreductases, cellulases, endoglucanases amylases, mannanases, steryl esterases, and/or cholesterol esterases; or with surfactants and other adjuvants.

L'invention concerne l'utilisation d'enzymes d'oxydation d'acides gras dans la fabrication de matériaux papiers, tels que le papier, le carton doublure, le carton ondulé, l'étoffe, les serviettes, les contenants et caisses en carton ondulé. Parmi les exemples d'enzymes d'oxydation d'acides gras, on trouve, les oxygénases classées sous la référence EC 1.13.11. y compris toute sous-classe de celles-ci, telle que la lipoxygénase, EC 1.13.11.12. De telles enzymes ont pour effet de réduire le dépôt de poix. On observe également des effets de blanchiment et de désencrage sur la pâte à papier et sur le matériau papier ainsi obtenu. L'enzyme d'oxydation d'acides gras peut être utilisée en combinaison avec un substrat, avec des protéases, des lipases, des xylanases, des cutinases, des oxidoréductases, des cellulases, des endoglucanases amylases, des mannanases, des stéryl estérases, et/ou des cholestérol estérases; ou avec des tensio-actifs ou autres adjuvants.

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