8results 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 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.

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 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.

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.