59results about How to "Delayed decay" patented technology

The invention relates to a method and a device for purifying coal tar through coupling rotational flow, wherein the method for purifying the coal tar through coupling rotational flow comprises the following steps: (a) mixing coal tar feed with a trapping agent sufficiently so as to extract out saline matters dispersed in the coal tar; (b) performing liquid-liquid rotational flow separation on thecoal tar in which the dispersed saline matters are extracted out for separating out the saline matters so as to obtain desalinated coal tar; (c) keeping stand and depositing the desalinated coal tar so as to remove the moisture therein and obtain dehydrated coal tar; (d) performing solid-liquid rotational flow separation on the dehydrated coal tar so as to remove solid particles therein and obtain the coal tar without the solid particles; and (e) performing micro rotational flow separation on the coal tar without the solid particles so as to remove the micro moisture therein. The invention also provides a device for purifying the coal tar through the coupling rotational flow.

The invention belongs to the technical field of picked fresh plant preservation and discloses a preservation method of fresh plants by combination of vacuum pre-cooling and acidic electrolyzed oxidizing water treatment. The preservation method comprises the following steps: (1), screening the fresh plants picked from the field, so that fresh plants which are uniform in size, accordant in ripeness and free of obvious defects are obtained; (2), performing vacuum pre-cooling on the fresh plants selected in the step (1) in a vacuum pre-cooling machine; (3), sprinkling the acidic electrolyzed oxidizing water during the pre-cooling process for 30-150 seconds, turning off the vacuum pump when the final temperature of the pre-cooling is reached, maintaining low-pressure state of the vacuum cavity while sprinkling the acidic electrolyzed oxidizing water again, and stopping sprinkling when the pressure maintaining is over; (4), introducing pre-configured mixed air into the vacuum cavity after the pressure maintaining until the pressure in the vacuum cavity is recovered; and (5), taking the pressure-recovered fresh plants from the pre-cooling machine, carrying out modified atmosphere packaging, and refrigerating the packed fresh plants. The method is suitable to wide varieties of vegetables and simple to operate, and is capable of effectively prolonging shelf lives of the products.

Methods and compositions for treating items to control microorganisms are provided. The method treats produce by contacting the surface of an item with an aqueous solution comprising i) an organic peracid of the formula RC(O)OOH wherein R is methyl, ethyl, n-propyl, or s-propyl; ii) a 2-hydroxy organic acid selected from tartaric acid, citric acid, malic acid, mandelic acid, and lactic acid; and iii) water wherein the aqueous solution has a pH from 2.5 to 6.0.

The invention discloses a method for preparing biochar by using blue algae, which comprises the following steps: 1. preparing raw materials; 2. freeze-dry; 3. carbonization; 4. granulation. Biochar prepared by utilizing that method for preparing biochar from blue algae of the present invention is a carbon-rich solid by-product remaining after pyrolysis of biomass in an anaerobic or hypoxic state.Because of its high carbon content, well-developed pore structure and good corrosion resistance, it can retain water, nutrients, adsorb organic matter, heavy metals and other pollutants, and is an ideal soil improver and adsorbent, and can slow down greenhouse benefit, improve soil, increase crop yield and reduce environmental pollution. Biochar is an ideal adsorbent because of its well-developedpore structure and abundant surface functional groups, which can remove organic matter and heavy metals, especially heavy metals.

The invention discloses a method for reducing postharvest rot loss of dragon fruits. The method specifically comprises four steps of periodically spraying a disease-resistant inductive agent A after blossoms fall, spraying a disease-resistant inductive agent B to fruitlets every 10 days after bagging is conducted, spraying a disease-resistant inductive agent C 3 days before harvest, and conducting antisepsis and cooling treatment after harvest. According to the method for reducing the postharvest rot loss of the dragon fruits, the postharvest rot loss of the dragon fruits can be effectively reduced, and the storage time is prolonged; after the method is continuously applied, the probability that the dragon fruits carry diseases in the later period can be greatly reduced, and compared with a traditional cold storage and preservation technology, the method is safer and more effective.

The invention relates to a package box, in particular to an anti-corrosion conveying box for aromatic fruit. The box comprises a box body, a box cover, an air extracting pump and multiple waveform-shaped partition boards. The box cover is buckled with the box body correspondingly. The inner wall of the box body is provided with multiple installing bosses for installing the waveform-shaped partition boards in a surrounding manner. All the installation bosses are arranged at intervals along the height direction of the box body and used for separating the interior of the box body into mutually-parallel accommodating cavities. A first air hole is distributed in the box cover. An air passing film covers the first air hole. Second air holes are arranged in all the waveform-shaped partition boards. An air inlet end of the air extracting pump communicates with the box body through an installing port at the bottom of the box body. A temperature and humidity inductor is arranged in the box body and the temperature and humidity inductor and the air extracting pump are electrically connected with a central processor. The anti-corrosion conveying box for aromatic fruit has following beneficial effects: problems of a conventional storage and transport box such as poor ventilation and easy corrosion of fruits are solved through a self-feedback system.

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 relates to a modifier specially used for casting an aluminum alloy for IC equipment and a modifying treatment method. The modifier is composed of a modifier A and a modifier B, wherein the modifier A comprises the following components: Mn, Ce, Sr, Bi and Al; and the modifier B comprises the following raw materials: NaCl, KCl, NaF, SrCO3, K2TiF6 and BaCl2. The modifying treatment method comprises two modifying treatment processes which separately adopt the modifier A and the modifier B, so that a modified element is wider in contact with the element Si in aluminum alloy melt, themodifying effect is more uniform, modifying lasting time is longer, crystalline grains of a texture are smaller, mechanical properties of products are remarkably improved, modifying recession is delayed, and repeated modifying treatment times are reduced, and therefore, energy conservation and consumption reduction are realized, the production cost is reduced, and the market competitiveness of enterprises is strengthened.

The invention relates to the technical field of vegetable fresh-keeping, in particular to a cold-chain logistics ecological fresh-keeping method for fresh vegetables. The cold-chain logistics ecological fresh-keeping method for the fresh vegetables comprises the following steps: S1, performing pretreatment: thoroughly washing the vegetables with a sodium chloride aqueous solution; S2, performing precooling: spraying water on the pretreated vegetables, and feeding the pretreated vegetables into a vacuum precooler for vacuum precooling; S3, performing soaking in a fresh-keeping solution: soaking the pre-cooled vegetables in the fresh-keeping solution, and performing draining; S4, performing ultraviolet sterilization and disinfection; S5, performing low-temperature refrigeration: putting the vegetables into a refrigerator for refrigeration treatment; S6, performing inflating: packaging the vegetables in a fresh-keeping bag, and inflating the fresh-keeping bag with gas; S7, performing boxing: after performing packaging with the fresh-keeping bag, then putting the fresh-keeping bag into a fresh-keeping box; and S8, performing cold-chain logistics transportation. The invention provides the cold-chain logistics ecological fresh-keeping method for fresh vegetables, which can effectively reduce nutrient loss and water loss of the vegetables, so that the vegetables are kept in a fresh state for a long time after being picked, and the fresh-keeping time of the vegetables is prolonged.

The invention belongs to the technical field of wine brewing, discloses black wine and a preparation method thereof, and is mainly used for solving the technical problems that at current, the health-care wine is poor in mouth feel, and cannot well exert efficacy for human bodies. The black wine disclosed by the invention is mainly prepared from the following raw materials in parts by weight of 100parts of Baijiu, 2-10 parts of lycium ruthenicm Murr, 2-10 parts of Chinese wolfberry fruits, 2-5 parts of blueberries, 2-10 parts of Chinese yam, 1-3 parts of ginseng, 1-6 parts of glossy ganoderma,2-10 parts of lepidium meyenii, 1-3 parts of radix polygoni multiflori and 1-10 parts of black sesame seeds. A low-temperature infusing wine brewing technology is adopted. The black wine has the efficacy that the black wine can quickly strengthen the muscles and bones, nourish liver, kidney, spleen, heart and lung, and can improve sexual function degradation, weak heslth and weakness caused by natural aging of people.

The invention relates to the technical field of oil-tea mushroom preservation, in particular to an oil-tea mushroom modified atmosphere packaging method. The method comprises the steps that oil-tea mushrooms are subjected to sterilized solution spraying before being loaded in a turnover box, under the combined action of ingredients such as tea polyphenols, the harmful bacteria content of the surfaces of the fresh oil-tea mushrooms is lowered, by means of wood pulp paper layering and isolation, the oil-tea mushroom bodies are subjected to flexible making, extraction crushing is reduced, the moisture of the surfaces of the oil-tea mushrooms and the moisture generated in the breathing process can be absorbed, the water content of the surfaces of the oil-tea mushrooms is lowered, water retention and moisturizing effects can be achieved, the weight-loss ratio of the mushroom bodies is lowered, by combining preservation gas processing, the respiration intensity of the oil-tea mushrooms is weakened, rotting and deterioration of the mushroom bodies are slowed down, deterioration in the oil-tea mushroom transportation and storage process is inhibited, the shelf life of the oil-tea mushroomsis prolonged.

The invention relates to a fresh-keeping method of a pomegranate on a branch, which comprises the following steps of: firstly, defoliating a tree body by using a urea solution, then sterilizing the fruits and spraying a calcium preparation, spraying a plant growth regulator and a zein solution on pomegranate fruit stems after a picking season to improve the freshness of the pomegranate, the pomegranate rind is more smooth and fresh, the browning inside and outside the fruit is avoided, the time of the fruit on the tree body is prolonged, the picking of the fruit is delayed, not only can the fruit absorb the nutrition of the tree body more fully, but also the freshness of the rind and flavor of the fruit can be ensured, the decay of the fruit after picking is delayed, thereby prolonging theshelf life of the fruit.

The invention provides a macadamia nut fresh-keeping storage method, and belongs to the technical field of food fresh-keeping storage. The method comprises the following technical steps: (1) harvesting; (2) removing green peels; (3) carrying out primary soaking; (4) carrying out secondary soaking; (5) carrying out vacuum precooling; and (6) storing. According to the macadamia nut fresh-keeping storage method, water evaporation of macadamia nuts can be well reduced, invasion of microorganisms is effectively prevented, the oxidation resistance of the macadamia nuts is improved, the nutritional quality of the macadamia nuts is maintained, and the macadamia nut fresh-keeping storage method storage effect is improved; and the macadamia nuts subjected to fresh-keeping treatment can be stored for more than 6 months, the moisture content, the oleic acid value and the peroxide value in kernels are slightly changed, and compared with a common storage method, the macadamia nuts are long in fresh-keeping time and good in fruit quality.

The invention discloses a field microwave treatment device for harvested muskmelons. The device comprises a bottom plate, a microwave cavity cover and microwave generators; the bottom plate is used for placing the harvested muskmelons; the microwave cavity cover is buckled on the bottom plate and forms a closed cavity with the bottom plate; a plurality of microwave generators are arranged on eachinner surface of the microwave cavity cover; each microwave generator is used to emit microwaves and apply microwaves to the muskmelons; each microwave generator is made to work intermittently; and the microwave treatment is completed when the temperature inside a 0 to 10 mm thick outer skin layer of the muskmelons reaches 45 to 50 DEG C. The invention further discloses a field microwave treatmentmethod using the field microwave treatment device for the harvested muskmelons; the field microwave treatment device and method for the harvested muskmelons are capable of suppressing pathogenic microorganisms hidden and infiltrated on the muskmelon surface and skin layer, reducing the rot and deterioration of the muskmelons during storage and transportation, and extending the storage and shelf life of the muskmelons.

The invention discloses a supramolecular material film constructed by biomass extracted small molecules. The supramolecular material film comprises biological polyhydroxy small molecules and small biological molecules containing carboxyl and hydroxyl groups, and a weight ratio of the polyhydroxy small molecules to the small biological molecules containing carboxyl and hydroxyl groups is 0.01: 1-1: 0.01. The invention also discloses a preparation method of the supramolecular material film. The preparation method comprises the following steps: 1) preparing a solution; 2) preparing a coating solution; and 3) coating and film forming. The invention belongs to the technical field of food preservation, and particularly relates to the supramolecular material film constructed by biomass extracted small molecules and the preparation method of the supramolecular material film.