11results about How to "Achieve freshness" patented technology

The invention belongs to the technical field of biological bacteriostasis and food packaging materials, and particularly relates to a carboxymethyl chitosan-covalent organic framework-nano-silver composite material and a preparation method and application thereof. According to the preparation method of the carboxymethyl chitosan-covalent organic framework-nano-silver composite material, provided by the invention, a metagen is adopted as a reducing agent, and AgNPs is synthesized through a biological method; the COF-AgNPs composite material is prepared by an in-situ growth method, and the ordered porous structure of the COF provides specific constraint for the AgNPs, so that aggregation of the AgNPs is effectively avoided; in addition, COF-AgNPs is added into a CMCS matrix, so that the film-forming ability of the COF-AgNPs is enhanced, and the CMCS matrix is endowed with excellent antibacterial performance and mechanical performance. Therefore, the composite film material prepared by adopting the preparation process can effectively improve the fresh-keeping effect of fruits and vegetables, and has a good application prospect in the field of packaging film materials for fruit and vegetable fresh-keeping.

This utility model relates to the field of cold chain preservation technology and discloses a multi-layer cold chain preservation box structure, including a box body. A placement mechanism is provided on the inner bottom wall of the box body. A filter plate is fixedly connected inside the box body. A partition mechanism is provided inside the box body, near the filter plate. The placement mechanism includes a rotating plate, which is rotatably connected to the outer front side of the box body. A locking component is slidably connected inside the rotating plate. Two conveying pipes are fixedly connected to both sides of the inner wall of the box body. A top plate is fixedly connected to the top of the box body. In this utility model, part of the cold air released from the ice pack enters the conveying pipes, passes through the connecting block and connecting pipe, and is ejected from the holes, surrounding the top of the items. The remaining cold air rises through the filter plate, filling the upper space. Items are placed in layers within the spaces formed by the partition mechanism, and the cold air continuously circulates, completely surrounding the items.

The watering device comprises a placement table, and a placement plate is slidably mounted in an inner cavity of the placement table; the spraying mechanism is used for spraying the litchis; the spraying mechanism comprises a supporting plate, the supporting plate is fixedly mounted at the top of the swing table, a third groove is formed in the top of the supporting plate, and a sliding block is slidably mounted in an inner cavity of the third groove; a sliding block slides in an inner cavity of a third groove, at the moment, a second gear is driven by a rack to rotate, the second gear further drives a first gear to rotate, the first gear drives a first water pipe to rotate to the top of a containing plate, and the first water pipe is close to one side of a supporting plate before starting; water is conveyed into the inner cavity of the first water pipe through the second water pipe and finally sprayed out through the multiple sprayers, water spraying and fresh keeping work on litchis can be achieved, and the situation that water is wasted and sprayed to the periphery of the placement table, and a customer slips when getting close to the placement table can be avoided.

The invention discloses a vegetable cold-chain fresh-keeping device and a cold-chain fresh-keeping storehouse. The vegetable cold-chain fresh-keeping device comprises a cargo distribution box and an assembly pipeline vertically fixed to the outer side wall of the cargo distribution box. The assembling plate blocks the end, away from the cargo distribution box, of the assembling pipeline, and cold air inlets and mounting holes are formed in the assembling plate and the side wall, corresponding to the assembling plate, of the cargo distribution box; the air inlet opening and closing assembly comprises a baffle, a push rod, a check ring and a return spring; the baffle hermetically covers the inner wall of the cargo distribution box, and the surface of the baffle can block a cold air inlet of the cargo distribution box; the push rod is slidably connected into the mounting holes of the cargo distribution box and the assembly plate, one end of the push rod is fixed to the baffle, the other end of the push rod is located outside the assembly pipeline, and the cold air inlet can be opened or closed through the baffle and the push rod. The cold-chain fresh-keeping storehouse comprises a warehouse, goods shelves and a cold air pipeline are arranged in the warehouse, the cold air pipeline is hermetically sleeved with the assembly pipeline, and the top plate can push the push rod to move. According to the invention, an efficient and ordered supply chain form of supplying and taking goods can be formed, and modular development of the cold chain library is realized.

The utility model relates to the technical field of tea storage equipment, in particular to a tea cabinet which comprises a tea cabinet body, a sliding door is hinged to the front face of the tea cabinet body, a handle is arranged in the middle of one side of the surface of the sliding door, and a display screen is arranged on the handle. A partition plate is arranged on the lower portion in the tea cabinet and divides the tea cabinet into a storage cavity and a lower cavity. A plurality of longitudinal supporting plate strip grooves are correspondingly formed in the two sides of the storage cavity, and movable supporting plates are clamped in the two corresponding longitudinal supporting plate strip grooves; grid windows are correspondingly arranged on the two sides of the rear face of the surface of the partition plate. The tea storage cabinet has the advantages that an ecological tea storage environment can be simulated, and corresponding storage environment conditions are set according to varieties of tea stored in the cabinet, so that fresh keeping of the tea can be realized to the greatest extent, and the storage quality of the tea is improved.

The invention relates to the technical field of soy sauce bottles, and discloses a double-channel fresh-keeping soy sauce bottle based on a blow molding method and a blow molding method thereof.The double-channel fresh-keeping soy sauce bottle comprises a bottle body, a storage mechanism is arranged in the bottle body and comprises an inner bag, a bottle plug is installed at the top of the inner bag, and the storage mechanism enables soy sauce not to make direct contact with the bottle body through the inner bag; a double-valve mechanism is arranged on the bottle plug, the double-valve mechanism comprises a silica gel breather valve and a silica gel retaining valve, and the double-valve mechanism controls the sealing performance of the bottle body and the inner bag through the silica gel breather valve and the silica gel retaining valve. The bottle body and the inner bag are separately treated, so that soy sauce is independently stored in the inner bag, the inner bag is kept closed when the bottle body and the inner bag are controlled to recover air pressure through the silica gel breather valve and the silica gel retaining valve, air is effectively prevented from entering the inner bag, and then the soy sauce is kept fresh, and use of preservatives is avoided.

The application provides a fresh-keeping device and a refrigerator. The fresh-keeping device comprises a storage container having a storage space; a humidity sensor configured to detect the humidity in the storage space; and a moisture absorption assembly comprising a housing and a moisture absorption element arranged in the housing. The housing is embedded in the storage container and is provided with a moisture absorption hole in communication with the storage space and a moisture removal hole in communication between the housing and the outside of the storage container. The moisture absorption assembly further comprises a moisture absorption valve and a moisture removal valve. The moisture absorption valve is configured to open and close according to the humidity in the storage space detected by the humidity sensor, and the moisture removal valve is configured to open and close according to the water absorption amount of the moisture absorption element. The moisture absorption assembly and the humidity sensor are used to realize moisture removal in the storage space, and the humidity can be discharged. The dry environment of the storage space can be realized to preserve dry food materials, and new problems caused by humidity accumulation can be avoided, thereby expanding the use scenarios of the refrigerator and improving the user experience.

The invention relates to an online fresh-keeping treatment system and method on a fruit and vegetable sorting line, and belongs to the field of fruit and vegetable fresh-keeping, a treatment cavity is arranged on a conveying belt of the fruit and vegetable sorting line, a gas isolation device, a monitoring device and a discharge module are arranged in the treatment cavity, and the discharge module is powered by a high-voltage power supply module; the system further comprises a component adjusting module and an intelligent control module. The intelligent control module is in signal connection with the monitoring device, the high-voltage power supply module, the component adjusting module and the conveyor belt. Active components are accurately kept within a fixed concentration range in real time by controlling the discharging module and the component adjusting module, and differentiated uninterrupted fruit and vegetable fresh-keeping treatment is achieved by controlling the conveying speed of the conveying belt according to different fruit and vegetable types.

The embodiment of the application discloses a reservation fresh-keeping method and device, a cooking equipment, a storage medium and a program product. The reservation fresh-keeping method comprises the following steps: in response to a reservation event, determining a reservation duration associated with the reservation event; controlling a temperature measuring component to obtain a current temperature of a cooking cavity; based on the current temperature and the reservation duration, controlling a pressure component to run at least one operation cycle within a preset time interval, so that the pressure of the cooking cavity changes, the growth of microorganisms in the cooking cavity is inhibited, and the fresh-keeping of food materials in the cooking cavity is realized; the operation cycle comprises a pressure reduction stage and a pressure increase stage.

The embodiment of the application provides a kind of oven and its control method, it is related to oven technical field, for the preservation of food material in cooking process, to improve the taste of dish.The oven includes: oven body, with the inner cavity of opening;Oxygen sensor, for detecting the oxygen content of air in the inner cavity;Gas separation system, for extracting air in the inner cavity;The oxygen filtration treatment of air extracted;The filtered oxygen after air is recharged into the inner cavity;Controller is configured to: receive the starting instruction of low-oxygen cooking mode;In response to the starting instruction of low-oxygen cooking mode, the oxygen content of air in the inner cavity is obtained by oxygen sensor;When the oxygen content of air in the inner cavity is greater than the first oxygen content threshold, control gas separation system to work, so that the oxygen content of air in the inner cavity is reduced to the first oxygen content threshold.

The invention relates to the technical field of preservation, and discloses a sweet potato peel-based polyphenol substance extraction process and application thereof, and the extraction process comprises the following steps: S1, pretreatment; s2, freezing; s3, grinding is conducted; s4, filtering; s5, soaking; s6, heating is conducted; s7, performing centrifugation; s8, suction filtration; s9, evaporating and concentrating; s10, performing purification; and S11, freezing to obtain a finished product. According to the extraction process of the polyphenols based on the sweet potato peels, the polyphenols can be extracted from the sweet potato peels, the extraction efficiency is high, the extracted polyphenols are high in antioxidant activity effect, and fresh milk can be kept fresh through application of the polyphenols.