Borregaard Industries Limited

Borregaard Industires Limited

Hans Evju

The present invention comprises an additive for compound feed for pigs, sheep, goats, poultry, cattle, horses, dogs, cats and fur-bearing animals, which contains an organic or inorganic acid, or salts thereof, espacially formic acid, with a beneficial effect on the treatment of compound feed, and a spent sulphite liquor from an acidic or neutral cellulose sulphite cook. The additive contains the acid or salts thereof in an amount ranging from 10-90 percentage weight, and the spent sulphite liquor in an amount ranging from 10-90 percentage weight. The additive is added is added to the compound feed in an amount ranging from 0,2 to 3,0 %. The spent sulphite liquor can be adsorbed on a suitable carrier, such as soy meal or water-adsorbing silicates, in order to attain a dry composition.

Growth enhancers

A process for the production of vanillin, 3-methoxy-4-hydroxy-benzaldehyde comprising ultrafiltrating a waste sulfite liquor to obtain a concentrated lignin-rich fraction, and oxidizing said fraction by convention procedures. Advantages of the process are increased yields of vanillin and reduction or avoidance of scale formation on production equipment.

Growing community of inventors

Sarpsborg, Norway

Hans Evju