Abstract: This invention provides a method of improving the humoral immune response or increasing the concentration levels of glutathione in mammals, which comprises administering orally to a mammal a therapeutically or a prophylactically effective amount of undenatured whey protein concentrate which has a biological activity based on the overall amino acid and associated small peptides pattern resulting from the contribution of all its protein components. A method for improving the humoral immune response in mammals also is disclosed which comprises administering orally to a mammal the combination of a vitamin supplement containing vitamin B.sub.2 in an amount in excess of minimum daily requirements and an effective amount of undenatured whey protein concentrate. This invention further provides a dietary supplement for a mammal which comprises an effective amount of vitamin B.sub.1, and B.sub.2 and a therapeutically or prophylactically effective amount of whey protein supplement.

Abstract: An agent for tyrosinase inhibition which contains the effective quantity of enzymatic hydrolyzates of milk proteins, having a decomposition rate from 6% to 55% as expressed by the percentage of formol nitrogen to total nitrogen.

Abstract: An agent is disclosed that is useful for treating liquid media, e.g., dechlorinating aqueous media. The agent contains at least one salt from the sulfur oxide family, such as sodium sulfite. In the agent, the salt is in mixture with an organic gel forming binder. The mixed material is especially adapted for preparing self-supporting, discrete particles of solid compacted material, e.g., tableted composition. The composition can provide such compacted material not only of desirable strength and hardness, but also of desirably controlled dissolution rate.

Abstract: A process for producing bovine lactoferrin in high purity form raw milk-materials containing skim milk or whey originated form cow's milk which comprises: adsoption step wherein said raw materials are contacted, at a temperature between 0.degree.-60.degree. C., with weakly acidic cation-exchanger which includes carboxymethyl groups as ion exchanging groups and has haemoglobin adsorption property more than 3.5 g/100 ml; rinsing step wherein said exchanger is washed with water to remove substances other than those adsorbed to said exchanger; and desorption step wherein the substances adsorbed to said exchanger are desorbed therefrom with a solution of one or more of salts to thereby yield highly purified bovine lactoferrin without deterirating raw milk materials. Said desorption step can be carried out in a single stage to produce lactoferrin more than 80% purity to total proteins recovered, and in two stage to attain more than 98% purity.

Abstract: A casein-soluble protein complex is prepared by raising the pH of an aqueous medium containing casein and soluble protein to within the range of 7.0 to 8.0, heating to a temperature in the range of about 65.6.degree. C. to 85.0.degree. C. and holding for a time sufficient to form the complex. Precipitation of the complex is then carried out by adjusting the temperature to within the range of 32.2.degree. C. to 76.7.degree. C. and lower the pH to within the range of 4.2 to 5.5 whereby the complex precipitates. The resultant precipitated complex is unique and can be used in making processed and imitation cheeses.

Abstract: A process of obtaining an .alpha.-lactalbumin enriched product from whey of various origins is disclosed. A first ultrafiltration is carried out on unpasteurized raw whey with membranes having cut-off greater that 5,000 (e.g. 50,000) at a pH between 6:3 and 7 (e.g. 6.6) and a temperature between 30.degree. and 60.degree. C. thereby retaining whey proteins. The ultrafiltrate then undergoes a second ultrafiltration with a membrane capable of retaining .alpha.-lactalbumin (cut-off about 1,200 and 2,000) which is preferably diafiltration. Depending on whether starting whey is acid whey or sweet whey the resulting product may contain practically no CMP or some (e.g. 25%). The resulting product is useful as a mother's milk substitute, pharmaceutical, intensive care or therapeutic food, or tryptophan enriched nutrient.

Abstract: A process for producing gluten having high solubility which comprises heating an aqueous acidic solution of gluten and one or more proteins selected from the group consisting of albumins and globulins in an amount of one half or less of that of gluten under acidic conditions and then, after cooling, neutralizing the solution, if necessary.

Abstract: A method for the continuous production of a purified immunoglobulin preparation wherein the antibodies are substantially enriched by means of a selective two-step ammonium sulfate fractionation procedure employing centrifugation and ion depletion processes. The purified immunoglobulins are subsequently commingled with condensed skim milk and spray dried. The resulting product for example is employed in the formulation of milk replacers for artificial rearing of neonatal pigs to provide the passive immunity to disease normally provided by sows' colostrum and later milk.