Abstract: A coated vitamin C preparation for animal feed comprises a particulate core containing vitamin C and a coating material composed of one or more fine powdery lipids having a melting point of at least 40.degree. C. and containing vitamin E. The coating material is present as an agglomerated coating layer surrounding the entire circumference of each particle of the particulate core.The coated vitamin C preparation is produced by a process, which comprises a step of bringing particles of a particulate core containing vitamin C into colliding contact with particles of a coating material composed of one or more fine powdery lipids having a melting point of at least 40.degree. C. and containing vitamin E, so as to form a coating layer of agglomerated particles of the coating material surrounding the entire circumference of each particle of the core.The coated vitamin C preparation is useful as a supplement to feeds for animals, such as, livestock, poultry and marine animals, by admixing same with the feed.

Abstract: The present invention provides a product containing glucomannan mixed with encapsulated acidic material having a wall made of hydrophobic substance which melts at a temperature higher than the coagulating temperature of the glucomannan. Because this acidic material is covered with a wall, when alkali is added to the mixture which is then heated, the glucomannan is coagulated. Then, the wall of the encapsulated material is melted by heating to liberate acid, neutralizing the alkaline substance, and producing a slightly alkaline, neutral or acidic glucomannan coagulated product. Further, although the glucomannan coagulated product has a water- releasing property, this can be reduced by adding other natural polysaccharides. Also, a decrease of elasticity caused by neutralization can be eliminated by adding food cellulose.

Abstract: A method for producing a coated organic agent is provided. The method comprises contacting a coating agent with core powders of an organic substance so that the coating agent collides against the core powders, and attaching the coating agent onto the overall surface of each of the core powders, whereby the core powders are coated by the coating agent. The coating agent contains at least lipid powders having a melting point not lower than 40.degree. C.