Process for producing bovine lactoferrin in high purity
First Claim
1. A process for producing bovine lactoferrin in high purity from raw milk materials containing skim milk or whey originating from cow'"'"'s milk, which comprises:
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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°-60° 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.
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6 Claims
- 1. A process for producing bovine lactoferrin in high purity from raw milk materials containing skim milk or whey originating from cow'"'"'s milk, which comprises:
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2. (a) contacting said raw materials with a weakly acidic cation exchange resin which contains as cation exchange groups carboxymethyl groups, and has a hemoglobin adsorbing property more than 3.5 g/100 ml, at a temperature of between 0°
- and 60°
C. to thereby adsorb said lactoferrin on said resin;(b) washing said ion exchange resin with water to remove substances other than those adsorbed on said cation exchange resin; and (c) desorbing said bovine lactoferrin from said cation exchange resin by washing said resin with a solution of at least one salt, to thereby yield purified bovine lactoferrin.
- and 60°
Specification