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US 11,272,723 B2Granted
Method of and system for surface pasteurization or sterilization of low-moisture particulate foods
AssigneeRoyal Duyvis Wiener B.V.
InventorJoost Jan De Koomen
Life of this patent
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Abstract
A method of and a system for surface pasteurizing or sterilizing low-moisture particulate foods, such as nuts, oats, and spices, is disclosed wherein the foods are pre-heated, pasteurized or sterilized in a gas, optionally dried, and cooled. The gas pasteurizing or sterilizing the foods contains water vapor and one or more further gasses, preferably air.
Claims20
A method of surface pasteurizing or sterilizing low-moisture particulate foods, comprising:
- pre-heating the foods from a lower temperature to a pasteurization temperature over time with a gas comprising water vapor and one or more further gasses;
- pasteurizing or sterilizing the foods with the gas at the pasteurization temperature, and wherein, during the pasteurizing or sterilizing, the foods are at the pasteurization temperature which is higher than the condensation temperature of the water vapor in the gas wherein a relative humidity of the gas is changed as the temperature of the food is raised;
- and
- cooling the foods.
1 more element
A method of surface pasteurizing or sterilizing low-moisture particulate foods, comprising:
- pre-heating the foods from a lower temperature to a pasteurization temperature over time with a gas comprising water vapor and one or more further gasses;
- pasteurizing or sterilizing the foods with the gas at the pasteurization temperature, wherein, during the pasteurizing or sterilizing, the foods are at a temperature higher than the condensation temperature of the water vapor in the gas, wherein a relative humidity (RH) of the gas pasteurizing or sterilizing the foods is in excess of 60%, and wherein the difference in water activity (ΔAw) of the foods and the gas pasteurising or sterilising the foods is in a range from 0.01 to 0.25, wherein the relative humidity of the gas is changed as the temperature of the foods is raised;
- and
- cooling the foods.
1 more element
Dependencies are inferred from the claim text.