103results about How to "Decrease the rate of decay" patented technology

The invention discloses a water-based nano thin-coating heat preservation paint and a preparation method thereof. The paint comprises the following raw materials by weight: 30-40 parts of an acrylic emulsion, 5-10 parts of titanium dioxide, 20-40 parts of hollow glass beads, 5-20 parts of aerogel and 5-10 parts of a film-forming assistant. According to the invention, the hollow glass beads and aerogel are used as the heat insulation basic raw materials, the heat conductivity coefficient of the paint is greatly reduced and is as low as 0.031-0.035W/m.K, and the paint can reach a remarkable heatinsulation effect under the condition of a very small construction thickness. Meanwhile, the hollow glass beads and the aerogel are conducive to improving the chemical stability of the paint itself,thus improving the covering power, lightening power, corrosion resistance, light resistance and weather resistance, and enhancing the mechanical strength of the paint; cellulose, a wetting dispersant,a defoaming agent and a preservative are mixed; by virtue of ethylene glycol, the acrylic emulsion and a pH regulator, the paint has excellent cohesiveness, weather resistance, film-forming properties, gloss and color retention and mechanical properties; and the use of a vinyl chloride-vinylidene chloride copolymer emulsion also can reach a grade A1 flame retardant effect.

The invention relates to a fresh-keeping agent containing rhizoma gastrodiae, which belongs to processing technical field of the fresh-keeping agent. The fresh-keeping agent is characterized by comprising the following ingredients by weight percent: 61 to 75 percent of rhizome gastrodiae extract, 12 to 19 percent of sterilization components, 6 to 13 percent of synergistic components and 3 to 9 percent of film-forming components. According to the fresh-keeping agent containing the rhizome gastrodiae, the pure natural rhizome gastrodiae extract is adopted as an active ingredient and is mixed with the natural sterilization, synergistic and film-forming components to prepare the fresh-keeping agent. The fresh-keeping agent has a fresh-keeping and preservative function and has a good fresh-keeping action on fruits, meat, seafood and vegetables. Due to the adoption of the fresh-keeping agent, the rotting speed of the food can be slowed down, moisture evaporation of the vegetables and fruits can be reduced, and wilting of the vegetables and fruits can be prevented; and meanwhile, a layer of uniform film can be formed on the surface of the food after being processed with the fresh-keeping agent, and the film is toxic-free and edible, so that the storage period can be effectively prolonged. The fresh-keeping agent has a simple processing method, less investment on equipment, guaranteed source of raw materials and low production cost and is safe and pure natural.

The invention discloses a method for preserving pseudosciaena crocea by combining a natural preservative with modified atmosphere packaging, and belongs to the technical field of aquatic product preservation. The method comprises the following steps: (1) slaughtering the fresh and alive pseudosciaena crocea and flushing; (2) soaking the pseudosciaena crocea in the natural preservative, wherein the natural preservative contains the following materials in parts by weight: 10-20 parts of melicope patulinervia extract liquid, 15-25 parts of ginkgo leaf extract liquid, 20-30 parts of grapefruit extract liquid and 30-45 parts of purple perilla extract liquid; (3) performing modified atmosphere packaging; (4) refrigerating for preservation. The method has preservation and anti-corrosion effects and can delay the food decomposition and deterioration speed; a thin film formed on the surface of the pseudosciaena crocea is nontoxic and edible; by combination with the modified atmosphere packaging, the preservation time of the pseudosciaena crocea is prolonged and the preservation effect of the pseudosciaena crocea is improved; moreover, the method is simple, convenient, safe, pure natural and low in production cost; the pseudosciaena crocea processed by the method still has the freshness, flavor and texture similar to those of alive pseudosciaena crocea within 55-65 days.

The invention provides an intelligent freshness preservation refrigerator capable of identifying varieties of fruits and vegetables. The refrigerator comprises a freezing chamber and a refrigerating chamber. An independent freshness preservation chamber is arranged in the refrigerating chamber. The freshness preservation chamber is internally provided with a central processing unit and a circuit substrate connected with the central processing unit. Colorful freshness preservation lamps are arranged on the circuit substrate. The colorful freshness preservation lamps comprise red LED lamp beads, orange LED lamp beads, yellow LED lamp beads, green LED lamp beads, blue LED lamp beads, cyan LED lamp beads and purple LED lamp beads. The intelligent freshness preservation refrigerator further comprises a pressure sensor, a humidity sensor, an atomizing device, a camera, an image processor and a data storage which are connected with the central processing unit. The central processing unit controls the circuit substrate according to detection results of the pressure sensor and the humidity sensor as well as the varieties of fruits and vegetables. The circuit substrate controls the turned-on number and the turning-on intensity of lamp beads of different colors.

The invention discloses a fresh-keeping agent for aquatic products as well as a preparation method and a using method of the fresh-keeping agent, and belongs to the field of fresh keeping of the aquatic products. The fresh-keeping agent comprises the following raw materials of a rosa roxburghii tratt fruit total flavonoid extract, a vine tea total flavonoid extract, a spina date seed total flavonoid extract, an Asiatic cornelian cherry fruit total flavonoid extract, a fructus forsythiae total flavonoid extract, a photinia serratifolia total flavonoid extract, propolis, sodium tripolyphosphate, lysozyme, organic acid, tea polyphenols, quercetin and bamboo vinegar. The preparation method of the fresh-keeping agent comprises the following steps of firstly, adding an appropriate amount of water to a Chinese herbal medicine total flavonoid extract, performing uniform mixing, and then adding the remaining raw materials. The using method of the fresh-keeping agent comprises the following steps of placing the slaughtered aquatic products in the fresh-keeping agent, then fishing out the aquatic products placed in the fresh-keeping agent, performing draining, performing modified atmosphere packaging and performing refrigeration. The fresh-keeping agent for the aquatic products, disclosed by the invention, is natural and non-toxic in components, good in fresh-keeping effect and safe to prepare and use, has the broad-spectrum antibacterial effect, effectively delays the increment of total bacterial count and the increment of volatile basic nitrogen and further prolongs the fresh-keeping time of the aquatic products.

The invention provides a plant extract preservative.The preservative contains an extract clear liquid and a wild vine tea extract, wherein the extract clear liquid is prepared from 3-8% of grapefruit, 1-5% of waxberry tree leaves, 3-6% of honeysuckle flower, 3-6% of chrysanthemum flower, 1-5% of sensitive plant, 1-3% of baijiu and 67-88% of water. The weight of the wild vine tea extract accounts for 9-20% of the total weight of the extract clear liquid. The invention also provides a preparation method of the plant extract preservative and its application on the aspects of fruit preservation and the like. The plant extract preservative has the advantages of convenient to use, safe, non-toxic and remarkable in preservation effect.

The invention belongs to the technical field of aquaculture and particularly relates to a method for cultivating babylonia lutosa. The method comprises the following steps: a babylonia lutosa culture pond which is of an inversely V-shaped structure and has a high middle of the pond bottom and two low sides; a pipeline with holes is arranged on the inclined plane of the pond bottom which is of the V-shaped structure, and a sewage draining port is arranged above an outlet of the pipeline with the holes; boulting cloth and thin sea sand are laid after medium coarse sea sand or mixture of the medium coarse sea sand and ledge fragments is laid at the bottom of the culture pond; air, pure oxygen and natural or artificial sea water are led into the culture pond through the pipeline with the holes each day, so as to achieve the goal that the water body in the babylonia lutosa culture pond is not subject to melanization and deterioration easily and achieve the goal that the growth rate of babylonia lutosa is quickened.

The invention belongs to the field of storage and freshness keeping of agriculture products, and particularly relates to a nuisanceless freshness keeping agent for fruits and vegetables and a preparation method of the nuisanceless freshness keeping agent for fruits and vegetables. The freshness keeping agent for fruits and vegetables comprises the following components in percentage by weight: 20-30% of a propolis aqueous solution, 30-40% of an onion aqueous solution, 10-20% of a star anise extracting solution and the balance of sterile water. The freshness keeping agent for the fruits and the vegetables is prepared through the steps of preparing the extracting solutions, mixing the prepared extracting solutions, filtering the mixed extracting solutions, and packaging the filtered extracting solutions. The ingredients of the freshness keeping agent for the fruits and the vegetables are useful and harmless to human bodies, so that the freshness keeping agent is safe and reliable; the freshness keeping agent not only can prolong the storage period of the fruits and the vegetables, but also can maintain and improve the color of the fruits and the vegetables and improve the quality; besides, the freshness keeping agent has the advantages of being extremely easy in formula and being convenient to operate.

The invention discloses a preparation method of a long-acting fresh-keeping corrugated case. The preparation method comprises the following steps: (1) adding neodymium chloride and lanthanum chlorideinto water, uniformly mixing and stirring the mixture, continuously adding sodium aminosalicylate into the mixture, heating the mixture to 88-90 DEG C, and insulating the mixture for 2-3 hours to obtain rare earth aminosalicylate; (2) uniformly mixing a pure acrylic emulsion, the rare earth aminosalicylate, eugenol type basil oil, tricalcium phosphate and water to prepare a fresh-keeping coating;and (3) brushing the fresh-keeping coating to the inner surface of the corrugated case, putting the corrugated case in an oven, and drying the corrugated case to prepare a finished product. The preparation method of the long-acting fresh-keeping corrugated case provided by the invention is simple to operate and low in cost, and can reduce the rot rate of fruits and keep the sensory quality of thefruits.

The invention relates to the field of preservatives and in particular to a fruit and vegetable preservative which contains the following raw materials: 20-26 parts of a fruit peel extract, 4-8 parts of a penetration enhancer, 10-14 parts of humectants, 4-6 parts of chitosan, 2-6 parts of organic acids, 4-6 parts of sodium alginate, 4-6 parts of sodium succinate, 2-4 parts of edible ethanol, 1-3 parts of edible salt water, 8-14 parts of ascorbic acid, 2-4 parts of clove, 2-4 parts of rosemary and 6-8 parts of a preservative. The fruit and vegetable preservative provided by the invention has very good effects of water retention and corrosion resistance, is capable of retarding rotting of fruits and vegetables and furthermore prolonging the preservation period of the fruits and the vegetables, does not change the original taste of the fruits and the vegetables within a preservation period and has a very good freshening function on fruits and vegetables.

The invention discloses an anti-corrosion treatment method for wood. The anti-corrosion treatment method for the wood comprises the steps that after sterilization and deinsectization through a traditional Chinese medicine soak solution, the wood is treated by adopting a full-cell process; a solute of a preservative used in the treatment process is ACC or CDDC, and a solvent is the traditional Chinese medicine soak solution; and finally, a layer of weather-resistant wood oil is applied on the surface of the dried wood so as to complete the anti-corrosion treatment. According to the anti-corrosion treatment method for the wood, Chinese prickly ash, agastache rugosus and ginkgo leaves are common traditional Chinese medicinal materials and have the effects of sterilization and deinsectization; then the anti-corrosion treatment is carried out by using the full-cell process so that gaps of the wood can be filled with the preservative, and the anti-corrosion effect can be achieved; and finally, the surface of the wood is brushed with a layer of the weather-proof wood oil so that air can be isolated to a certain extent, and the surface of the wood can be prevented from being oxidized. The method has the advantage that the corrosion speed of the wood can be decreased to the maximum extent after the wood is treated by using the method.

The invention discloses a stereo buried cylindrical concrete coffin for a deep-well tomb hole. The coffin has an inner and outer layer structure form, the inner layer has a cylindrical plastic barrel structure, and the outer layer has a cylindrical reinforced concrete tank structure. The inner layer structure consists of a tubular concrete coffin body, a disc concrete coffin bottom and a disc concrete coffin cover, wherein the cylindrical concrete coffin body and the disc concrete coffin bottom are cast integrally. When a corpse is put into the plastic barrel of the inner layer, an anticorrosive material is filled to protect the corpse, and the air in the plastic barrel is pumped. The outer layer structure totally wraps the plastic barrel structure of the inner layer, and a concrete grouting material is filled in gaps between the inner layer structure and the outer layer structure. The cylindrical concrete coffin has advantages of simple manufacture, low price, good sealing property, good corrosion resistance, high strength, carrying convenience and the like, and is suitable for the deep-well tomb hole; and the cylindrical concrete coffin is stacked with multiple layers to save the land, and trees are planted on the surface to promote greening.

The invention belongs to the technical field of fruit fresh-keeping, and particularly relates to a biological fresh-keeping agent special for prolonging the shelf life of fruits. By adopting methods of semi-fermentation treatment of tea polyphenol and a Zanthoxylum bungeanum leaf extract and modification treatment of chitosan through epsilon-polylysine, the bacteriostatic and antioxidant effects of the fresh-keeping agent are maximized, then film coating treatment is conducted, the effective usage time of the fresh-keeping agent is prolonged, a one-way thin film is formed after the fresh-keeping agent is used, ethylene generated by the fruits is absorbed and then released into air, thus maturation speed increasing caused by the ethylene generated by the fruits is avoided, the shelf life ofthe fruits is prolonged simultaneously from two aspects of resistance to bacteria and oxidation and ethylene absorption, and the biological fresh-keeping agent has a remarkable effect when especiallybeing applied to the aspects of dragon fruits, passion fruits and plums.

The invention discloses a fresh keeping method of tomatoes. The fresh keeping method comprises the following operation steps of (1) 2-3 days before the tomatoes are picked, spraying the tomatoes withfresh keeping liquid; (2) after the sprayed tomatoes are picked, putting the picked tomatoes in sealed environment, adding 1-methylcyclopropene, performing sealing treatment for 4-6 hours, adding thyme oil to the sealed environment, wherein 1g of the thyme oil is added to a space of each cubic metre, continuing performing sealing treatment for 3-4 hours, and finishing the fresh keeping treatment on the tomatoes. The fresh keeping method of the tomatoes, provided by the invention, is simple to operate and low in cost, and fresh keeping treatment can be performed on scaled tomatoes.