Fabrication of protein gel for new application

A method of making protein matrix for separation, immobilization, diagnosis, and artificial organ, comprising the steps of:

• a) Preparing a homogeneous protein solution by dissolving the following components in water:
• i. Proteins or mixtures of different proteins selected from whey protein isolate, whey protein concentrate, ovalbumin, casine, beta-lactoglobulin, alpha-lactalbumin, or mixture thereof, at a total protein concentration of 5 to 80 weight percents in the final protein solution;
• ii. Metal salts or mixture of different metal salts at a total salt concentration of 0.001M to 0.5M in the final protein solution;
• iii. Acid, base, or mixtures thereof to change the pH value of the protein solution to between 2 and 11.
• b) Degasing the protein mixtures in Step 1a by centrifugation, vacuuming, sonication, or combinations thereof, to remove the trapped air in the protein solution.
• c) Extruding, spinning or casting the protein mixtures in Step 1b into a protein matrix of any size and shape at predetermined conditions;
• d) Strengthening the protein matrix through a heat treatment or a series of heat treatments, including steam heating and baking, at predetermined temperature or temperatures, pressure or pressures, and humidity or humidities for predetermined length of time to effectively strengthen the protein matrix.