Preparation method of ceramic powder for food preservation
A technology for food preservation and powder, which is applied in the fields of food preservation, preservation of food ingredients as anti-microbials, food ingredients, etc., can solve the problems of difficulty in solving the problems of freshness, simultaneous preservation of vegetables and fruits, etc., and achieves the effect of strong physical adsorption.
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Embodiment 1
[0021] Preferred Embodiment 1 of the present invention provides a method for preparing ceramic powder for food preservation, comprising the following steps:
[0022] Step [1] After crushing the natural zeolite to a particle size of 50 microns, heat treatment at a temperature of 360° C. for 6 hours, and then adding the treated powder into the aqueous solution to make an aqueous zeolite solution;
[0023] Step [2] Put oyster shells or other shellfish into an electric furnace and calcinate at 350°C for 3 hours, then raise the temperature to 750°C for another 2 hours, then raise the temperature to 840°C for 8 hours, and finally burn it into Shellfish powder with a size of 50 microns;
[0024] Step [3] adding calcined shellfish powder to the zeolite aqueous solution at a weight ratio of 7:3 and mixing, then heating while adding water at 90-100°C for 48 hours, It is then maintained at a temperature of 80-90° C. until the moisture content of the powder is 5%, and finally crushed int...
Embodiment 2
[0028] Preferred embodiment 2 of the present invention provides a preparation method of ceramic powder for food preservation, comprising the following steps:
[0029] Step [1] After crushing the natural zeolite to a particle size of 50 microns, heat treatment at a temperature of 360° C. for 6 hours, and then adding the treated powder into the aqueous solution to make an aqueous zeolite solution;
[0030] Step [2] Put oyster shells or other shellfish into an electric furnace and calcinate at 350°C for 3 hours, then raise the temperature to 750°C for another 2 hours, then raise the temperature to 840°C for 8 hours, and finally burn it into Shellfish powder with a size of 50 microns;
[0031] Step [3] adding calcined shellfish powder to the zeolite aqueous solution at a weight ratio of 7:3 and mixing, then heating while adding water at 90-100°C for 48 hours, It is then maintained at a temperature of 80-90° C. until the moisture content of the powder is 5%, and finally crushed in...
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