18results about How to "Delay oxidative deterioration" patented technology

This invention relates to the field of food preservation technology and discloses a liquid preservative for preserving fresh walnut kernels. The preservative comprises a natural preservative, a solubilizing and stabilizing agent, and a solvent. This liquid preservative uses natural phloretin as the preservative component, combined with Tween 80 as a solubilizing and stabilizing agent and ethanol as a solvent. This effectively solves the problems of poor water and oil solubility and inadequate stability of phloretin, allowing it to be stably dispersed in the preservative system and fully exert its antioxidant and antimicrobial effects. Furthermore, the preparation method is simple and easy to implement, and the production process is safe and controllable. It is convenient to use; the preservation of fresh walnut kernels can be achieved through dilution and soaking. The diluted solution can be reused, reducing usage costs. Simultaneously, it can inhibit bacterial growth during the storage of fresh walnut kernels, delay oxidative deterioration, maintain their good appearance and quality, extend shelf life, and meet the market demand for high-quality fresh walnut kernels.

This invention discloses a sugar-vinegar liquor for controlling the tea geometrid moth and its preparation process, belonging to the field of green pest control technology for tea gardens. It addresses the problems of existing sugar-vinegar liquors for controlling the tea geometrid moth, such as weak targeting, short-lasting effect, incomplete control, imperfect formulation and application process, and unreasonable cost control. The method includes the following steps: weighing sugar, vinegar, liquor, and water according to the volume ratio of the basic components; adding sugar to water and stirring until completely dissolved to obtain a sugar-water solution; adding vinegar and liquor sequentially to the sugar-water solution and stirring evenly to obtain a basic sugar-vinegar liquor; sequentially adding a targeted attractant, a long-acting slow-release factor, and an environmentally friendly killing factor to the basic sugar-vinegar liquor, stirring for 10-15 minutes after each addition to ensure thorough mixing, resulting in a sugar-vinegar liquor for controlling the tea geometrid moth. This invention significantly improves the trapping specificity and efficiency by optimizing the basic ratio, selecting targeted raw materials, and adding a tea geometrid moth-specific targeted attractant.

The invention provides high-stability baking grease and a processing method thereof, and relates to the technical field of baking grease processing. The high-stability baking grease comprises the following materials in parts by weight: 100 parts of base material oil, 0.5-1.0 part of an emulsifier, 0.005-0.02 part of ascorbyl palmitate and 1-3 parts of a tea leaf extract, the processing method comprises four steps of oil phase preparation, dissolution and emulsification, sterilization and freezing processing. According to the high-stability baking grease disclosed by the invention, by adjusting the ratio of the components and the processing method, the stability of the baking grease is improved, and meanwhile, the taste and the shelf life of baked foods are also improved.

A sampler for environmental geology relates to the technical field of geological exploration equipment and comprises a support, a ground breaking drill, a drilling power source, a pile frame, an electric capstan, an electromagnetic chuck and an electromagnetic controller, the pile frame is provided with the drilling power source capable of vertically moving along the pile frame, and the drilling power source can drive the ground breaking drill to drill downwards. The soil breaking drill is a hollow pipe with a cutting edge, a sampling drill with threads is detachably arranged in a pipe body of the soil breaking drill, the sampling drill is a downward hollow sharp pipe with an opening, a sample container tightly attached to the inner wall of the sampling drill is arranged in the sampling drill, and the sampling drill is provided with a magnetic adsorption plate. A cable part of the electromagnetic chuck is wound on the electric capstan and is connected with the electromagnetic controller, and the electric capstan can drive the magnetic adsorption head to vertically move into the ground breaking drill to be in contact with the adsorption plate; according to the sampling device, excessive compression of the soil sample can be avoided, the accuracy of the sampling result is ensured, the sampling equipment can continuously and automatically drill and collect the soil sample, and the automation degree is high.

The invention relates to the field of food processing, in particular to a formula and a processing method of a herbal drunken fragrant duck. The processing method comprises the following steps: selecting materials, preparing seasonings, cooking, slowly stewing and soaking, post-treating and packaging, sterilizing and refrigerating, firstly lubricating oil in a pot at the oil temperature of 150 DEG C, adding salad oil, heating to the oil temperature of 5-6%, adding ginger slices, stir-frying to be 50% dry, then putting the boiled ducks, and stir-frying for 3-4 minutes with big fire; turning off the fire, adding Erguotou wine, and adding a duck powder bag, clear water, dried yellow pepper, a seasoning bag, maltose and whole green onion; through the steps of fine material selection and pretreatment, it is ensured that the meat of the ducks is fresh and tender and free of lesions, and impurities and peculiar smells possibly affecting the taste are removed. Meanwhile, in the cooking process, through pickling, seasoning stir-frying and reasonable fire control, the duck meat is more tasty, the seasoning and the duck meat are fully fused, a unique drunkenness flavor is formed, and the overall taste experience is improved.

The application relates to the technical field of daily chemical washing and protecting products, and particularly discloses a traditional Chinese medicine shampoo formula with oil control, itching stopping and nourishment and hair fixing functions and a preparation process thereof. The shampoo is prepared by compounding traditional Chinese medicine active components and daily chemical auxiliaries, the traditional Chinese medicine components contain itching stopping, oil control, hair growth, nourishment, hair fixing and auxiliary conditioning medicinal materials, can improve the problems of damp heat of the scalp and insufficient nutrition of hair follicles, and the daily chemical auxiliaries adopt mild compounding, surface activation, conditioning and preservative components. The preparation process is that medicinal materials are pretreated, volatile oil and water-soluble effective components are retained through segmented extraction, then matrix preparation, compounding and functional agent addition are sequentially completed, nitrogen protection constant temperature curing is adopted, finally, multi-stage filtration and sterile filling are adopted to obtain the finished product. The product can be used for the scalp and hair care of abnormal oiliness, itching and kidney deficiency, hair moth and hair loss, can simultaneously realize oil control, itching stopping, nourishment and hair fixing, and can give consideration to both symptoms and root causes; and the preparation process can effectively retain traditional Chinese medicine effective components and improve product system stability.

The invention provides a brewing method of antioxidant composite fruit wine, which comprises the following steps: adding cane sugar, active dry yeast and a composite antioxidant into mixed fruit juice, fermenting at 20-25 DEG C, aging after fermentation, clarifying, sterilizing, and filling to obtain the finished antioxidant composite fruit wine. In the brewing process, a composite antioxidant composed of natural antioxidants is added, the oxidation resistance of the fruit wine is further enhanced, and meanwhile potential risks cannot be caused to human health.

The invention discloses a traditional Chinese medicine composition for treating asthma and a preparation method thereof. The traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 2-10 parts of pericarpium citri reticulatae, 2-10 parts of roses, 2-10 parts of sword beans, 2-10 parts of pinellia ternate, 4-20 parts of scaphium scaphigerum, 4-20 parts of semen armeniacae amarae, 4-20 parts of radix stemonae, 4-20 parts of folium eriobotryae, 3-16 parts of polygala japonica, 3-16 parts of folium mori and 40-200 parts of lean pork. The composition disclosed by the invention has an obvious effect of treating asthma; in addition, the gelatin-containing microspheres are used for carrying out tannin removal treatment on roses and folium eriobotryae in the traditional Chinese medicine composition to reduce the influence of tannin components on other medicinal components, and the gelatin microspheres subjected to tannin removal are recycled and applied to bitter apricot kernel processing, so that the nutrition loss can be reduced while the enzyme deactivation and glycoside protection effects are improved; the asthma treatment effect of the composition is comprehensively improved; on the basis, the taste of the traditional Chinese medicine composition is improved, a specific flavoring agent is added during preparation of the composition, and the traditional Chinese medicine composition with good taste is obtained.

The invention discloses a preparation method of a biodegradable polyvinyl alcohol resin packaging material, and relates to the technical field of packaging materials, and the preparation method comprises the following preparation steps: step 1, adding 100-150g of polyvinyl alcohol into 500-1000g of deionized water, heating to 60-70 DEG C, and stirring for 10-30 minutes; 2, under the stirring condition, 2.5 g to 6 g of modified chitosan, 1.5 g to 2.5 g of a deoxidizing agent, 5 g to 8 g of nanofiller and 2 g to 6 g of modified microcrystalline cellulose are sequentially added, and the materials are mixed to be uniform; and step 3, adding the mixture into a double-screw extruder, melting, kneading and extruding to obtain the polyvinyl alcohol resin packaging material. According to the preparation method of the biodegradable polyvinyl alcohol resin packaging material, chitosan is modified, so that the chitosan is better dispersed in a resin matrix and prevented from being agglomerated, and the performance of the material is more uniform; the reaction activity on a molecular chain of the modified chitosan is enhanced, the interaction between the modified chitosan and the polyvinyl alcohol resin is enhanced, and the compatibility and mechanical properties of the material are improved.

This invention discloses a highly hydrophobic and anti-caking starch and its preparation process, belonging to the field of starch preparation technology. It is prepared using the following raw materials in parts by weight: 30-35 parts starch, 11-13.3 parts octenyl succinate starch ester, 2.1-3.5 parts plant polyphenol nanoaggregates, 5.6-7.3 parts plant polypeptide hydrophobic aggregates, 2.2-3.1 parts chitosan, 0.3-1 parts anti-caking agent, and 0.1-0.13 parts food-grade crosslinking agent. Through the above method, this invention constructs a composite intermediate using plant polyphenol nanoaggregates, soybean polypeptide hydrophobic aggregates, and chitosan. The stability of the intermediate structure is increased by crosslinking with food-grade citric acid. A surface coating process is then used to obtain a functional dry powder. This functional dry powder binds to starch particles, achieving hydrophobic protection of the starch particle surface.

The utility model provides a kind of helicopter main speed reducer bearing lubricating structure, belong to the field of aircraft. Helicopter main speed reducer bearing lubricating structure includes support machine case, bearing bush mounted on support machine case and bearing installed in bearing bush, bearing is used to connect the main rotor shaft of helicopter, support machine case is equipped with oil circuit, and the inner wall of the mounting hole of support machine case bearing bush is equipped with oil outlet with oil circuit communication;The inner wall of bearing bush has first recess with oil outlet communication, and the top flange lower end surface of bearing bush is equipped with second recess, second recess is communicated with first recess, and the top of second recess is higher than bearing outer ring, to form the passage for lubricating oil to pass through bearing outer ring and reach the annular space between bearing inner and outer rings. The utility model sends lubricating oil to the upper surface of bearing, lubricating oil is lubricated to bearing from top to bottom under the action of gravity, improves the effect of lubrication, avoids the problem of uneven lubrication, prolongs the service life of bearing.

This utility model discloses a portable leek harvesting basket, including a harvesting basket body and a collection basket. The upper perimeter of the harvesting basket body contacts the lower perimeter of the collection basket. A fixing block is installed on the right side of the lower end of the harvesting basket body. Telescopic automatic adjustment rods are installed on the front and rear sides of the upper end of the fixing block. The beneficial effects of this utility model are: the combination design of the telescopic automatic adjustment rod and the universal wheels allows for flexible height adjustment according to user needs and easy movement, reducing the intensity of manual handling. It is especially suitable for harvesting operations in large-scale leek planting bases, greatly improving transportation efficiency. The precise fitting structure of the positioning groove and the positioning base, combined with the fixed connection method of the mounting block, ensures that the harvesting basket body, collection basket, universal wheels, and other components are firmly connected, without loosening or shaking during movement and loading, effectively preventing leek spillage and loss. The protective baffle forms a lateral barrier to prevent leeks from falling due to collision during transportation.

The invention discloses a preparation method of an activated pectin-agar composite film loaded with ginger essential oil nanoemulsion and Pickering emulsion. The preparation method comprises the following steps: (1) preparing the ginger essential oil loaded nanoemulsion; (2) preparing a Pickering emulsion loaded with ginger essential oil; and (3) adding the two emulsions into the pectin-agar mixed solution, stirring to form a film-forming solution, casting the film-forming solution into a plastic culture dish, and drying to obtain the pectin-agar composite film. According to the pectin-agar composite film disclosed by the invention, by adding the ginger essential oil, the barrier property of ultraviolet light / visible light is remarkably improved, so that the pectin-agar composite film can be used for packaging easily-oxidized food, has a filtering effect on ultraviolet light, and is beneficial to reducing oxidative deterioration of the food due to ultraviolet irradiation when the film is used for preserving the food; meanwhile, the pectin-agar composite film has excellent antioxidant activity, and in addition, the pectin-agar composite film has a relatively good antibacterial effect on staphylococcus aureus and is suitable for packaging meat, eggs, fishes and other products.

The application discloses an intelligent pet feeder based on food weight curve learning and a control method thereof. The feeder comprises a main shell, a grain storage bin, a spiral feeding mechanism, a grain outlet, a weighing food tray, a weighing sensor and a control board. The control method comprises the following steps: A1, collecting N times of food weight curves W(t); A2, calculating the slope dW / dt and the residual ratio r in real time; A3, dynamically feeding according to the slope ΔM=f(dW / dt, r); A4, abnormal feeding stop determination (dW / dt is approximately equal to 0 for T consecutive minutes); and A5, writing history and pushing an APP.

The invention belongs to the field of food processing, and particularly discloses paper-wrapped preserved meat with tea flavor and a processing method thereof, tea leaves or a tea leaf extract is added in the preparation process of the preserved meat, the tea leaf extract is prepared through cold extraction and freeze-drying processes, and it is ensured that nutritional ingredients and fragrance in the tea leaves are effectively reserved. The selected tea leaves comprise high-quality tea leaves such as Longjing, Tieguanyin or Pu'er tea leaves. The processing method of the preserved meat comprises the steps of raw material selection, pickling process, smoking, air drying and environment-friendly paper package packaging, and a tea extract and probiotic fermentation liquor are mixed in pickling seasoning, so that the taste and the nutritional value of the preserved meat are improved. The preserved meat is endowed with unique tea aroma flavor, the health attribute of the preserved meat is enhanced through the probiotic fermentation liquor, and meanwhile, environment-friendly paper bags are adopted for packaging, so that the requirements of modern consumers for health and environmental protection are met.

This invention discloses a high-antioxidant, anti-coking high-temperature chain lubricant and its preparation method, belonging to the field of chain lubricant preparation technology. It comprises the following components by mass percentage: 70%-85% base oil, 5%-10% antioxidant, 3%-8% anti-coking agent, 1%-3% extreme pressure anti-wear agent, 0.1%-0.5% pour point depressant, 0.01%-0.05% antifoaming agent, and the remainder being unavoidable impurities. The base oil is a mixture of synthetic hydrocarbon oil and polyether oil. This invention prepares the antioxidant complex by rationally selecting a complex of hindered phenolic and amine antioxidants and precisely controlling their ratio under specific temperature and stirring conditions. In accelerated oxidation tests, the increase in acid value after prolonged high-temperature oxidation is minimal, effectively delaying the oxidative deterioration process of the lubricant, significantly extending its service life under high-temperature environments, reducing equipment downtime due to lubricant oxidation failure, and improving production efficiency.

The application discloses a kind of storage-resistant antioxidant blending gasoline blending device and method, belong to gasoline stirring technical field, to solve the problem that conventional rotary injector nozzle is fixed, jet coverage is limited, tank wall and blind area is easily mixed unevenly, affect oil product stability, the application includes blending tank, the circumferential side wall of the inner chamber of blending tank is fixedly installed with the rotary injection assembly for blending gasoline, and the liquid inlet end of rotary injection assembly is communicated with valve one by oil pipe, and the inner wall of liquid outlet end of rotary injection assembly is fixedly installed with a plurality of auxiliary blending components for enhancing gasoline blending, the auxiliary blending component in the application automatically extends and conducts under high pressure, so that branch jet stream and main jet stream cooperatively form three-dimensional multidirectional turbulent flow field, directional impact tank wall and injection blind area, effectively avoid local concentration deviation of additive, guarantee gasoline antioxidant property and storage stability.

The utility model provides a closed cycle drying system for para aminobenzoic acid. The closed cycle drying system comprises a filter, a gas heater, a vibration fluidized dryer, a feeder, a cyclone separator, an air blower and a condenser, according to the utility model, a closed-loop circulating drying system is adopted, so that the possibility of oxidative deterioration and crystal form damage of a product is reduced, the obtained product has better crystal form and appearance, and the quality of the product is improved; the labor amount is reduced, zero emission is basically achieved, the environmental influence is reduced, the production cost of the product is reduced, and the market competitiveness of the product is improved.