40results about How to "Keep it fresh" patented technology

The invention relates to a frozen meat thawing device and a thawing method thereof. The frozen meat thawing device comprises an underframe, a box body, a refrigerating unit, a heating device, a humidifying device and a temperature controller, wherein the box body is arranged on the underframe; a thawing chamber is arranged in the box body; the refrigerating unit and the humidifying device are arranged in an equipment chamber above a head wind plate on the top of the thawing chamber; the heating device is arranged in the box body; the refrigerating unit, the heating device and the humidifying device are all electrically connected to the temperature controller; the thawing chamber is further provided with a plurality of thawing object surface temperature sensors and thawing object center temperature sensors; the thawing object surface temperature sensors and the thawing object center temperature sensors are arranged in the thawing chamber and are electrically connected to the temperaturecontroller, and are respectively used for detecting the temperature of the surface and the temperature of the center of a thawing object. The frozen meat thawing device has the advantages of convenient operation and management, fast thawing speed and no influence on meat quality.

The invention discloses a freshness preservation method of medicinal materials. The freshness preservation method of the medicinal materials comprises the following steps: sorting harvested fresh medicinal materials, namely shearing and washing the fresh medicinal materials; carrying out sterilization treatment on the washed medicinal materials, and carrying out air-drying; contacting the dried medicinal materials with preservatives, and carrying out air-drying; and packaging the dried medicinal materials by using packaging materials. The freshness preservation method of the medicinal materials utilizes PBAT / PLLA composite ventilate film, so that water desorption of the fresh medicinal materials can be very well prevented, as well as effectively block pollution from the external environment. Being observed in bacteria tests which have been carried out for 1 month, the total colony numbers, the mold colony counts and the Escherichia coli counts of the medicinal materials preserved by using the method disclosed by the invention are all within the requirements of the national standards; thus, the method is capable of very well inhibiting growth of bacteria. Moreover, the preserved medicinal materials are good in appearance characteristics, and kept fresh. Small packages of fresh herbal medicines in small pieces ready for decoction are prepared by using the preserved medicinal materials.