Abstract: A digestible, biodegradable chewing gum comprising wheat gluten and a texturizing agent such as calcium carbonate, rice flour or ascorbic acid. The chewing gum can be swallowed and digested, or it can be discarded in ordinary compost waste facilities.

Abstract: A process is provided for the condensation polymerizing lactic acid to a polymer with a weight average molecular weight of 2,500 to 4,500 containing less than 4% lactide and for a controlled release dosage form comprising a pharmaceutically active ingredient in a matrix of poly(lactic acid) and its copolymers with glycolic acid, valerolactone, .epsilon.-caprolactone, .epsilon.-decalactone, hydroxybutyric acid, .beta.-hydroxyvaleric acid and dioxanone.

Abstract: Formulated animal feeds having excellent digestibility with high energy and good protein content based on lactose-rich whey products are produced by supplementation with small quantities of water insoluble poly-N-acetyl-.beta.-D-glucosamine glycosides having a molecular weight of at least 5,000 and are fed to farm type animals. Most of the formulated feeds contain at least 7% lactose and up to 5% poly-N-acetyl-.beta.-D-glucosamine glycoside in addition to the usual protein, fat, carbohydrate, vitamin and mineral constitutents of the feed. For poultry, which are among the least efficient metabolizers of lactose, such feeds may contain 5-25% lactose.

Abstract: A friable, dispersible microcrystalline chitin powder and a process of making same by treating particulate chitin at an elevated temperature with phosphoric acid, particularly with phosphoric acid diluted with a lower aliphatic alcohol, separating the treated chitin and subjecting same to shearing in an inert liquid medium until a uniform dispersion is obtained, thereafter separating the sheared chitin and drying and grinding same to a fine powder.