Abstract: Tea trimmings and wastes are dried and then burned either directly or indirectly to liberate caffeine which is recovery by water scrubbing or electrostatic precipitation. The crude caffeine is then concentrated and purified by crystallization for use in foods and pharmaceuticals.

Abstract: The present invention relates to the separation of color solids from caramelized carbohydrate solutions by the use of ultrafiltration, and more particularly, to a continuous process for separation of these solids into a color fraction and a non-color fraction with recycle of the non-color fraction to produce color bodies having an acceptable flavor for use in beverages or food.

Abstract: An extremely white water absorbent fiber having a high percentage of total dietary fiber and hemicellulose and a low concentration of lignin and silica is disclosed. The dietary fiber is formed by subjecting ground oat hulls to an alkaline digestion at elevated temperatures and pressures. The digested oat hulls are then filtered, neutralized and bleached to form the desired end product. The formed fibers are comparable or better than fibers formed by digestion of wood products. These fibers can be added in high concentrations to bakery products, particularly bread, without imparting a gritty feel to the bread or causing significant discoloration of the bread.

Abstract: Ammonia caramel color is formed in a fast cook method under elevated pressure and temperature by reacting ammonia catalyst with a carbohydrate syrup wherein the amount of water in the ammonia carbohydrate syrup mixture is controlled. The water content is maintained at preferably less than 40% of the mixture during a substantial portion of the caramelization reaction. Preferably the ammonia caramel is formed by reacting a carbohydrate syrup having a solids content of at least 75-80% with an anhydrous ammonia catalyst and reacting this at elevated temperature and super-atmospheric pressure over a period of 1-2 hours. Although the caramelization reaction generates water, the water content will not exceed 40%. This facilitates the rapid formation of caramel color without increasing the 4MeI or THI content, and without hazing of the caramel color. Further this produces a remarkably salt stable product.

Abstract: Ammonia caramel coloring is formed continuously by pumping a heated stream of corn syrup through a reaction zone under pressure. 4MeI content and THI content are maintained at a low level by preheating the ammonia catalyst prior to injection into the reaction zone. Preferably ammonia catalyst is added to the reaction zone at a plurality of injection ports. This permits rapid formation of ammonia caramel coloring without increasing the 4MeI of THI content, and without hazing of the caramel color.