7 results about "ARTEMISIA ANNUA LEAF" patented technology

The invention discloses a composition for controlling feather louses and application of the composition in preparation of a pigeon nest inner pad with insect-expelling and mildew-proof functions, and belongs to the technical field of livestock and poultry breeding appliances. The composition for controlling feather louses comprises acorus calamus leaves and artemisia apiacea leaves. The inner pad is a bowl-shaped inner pad which can be placed in a hard pigeon nest basin, adopts a composite structure design, adopts a bowl-shaped slow-release carrier layer woven by reed stalks, and is filled with a compound active filler which is formed by compounding and crushing acorus calamus leaves and sweet wormwood leaves. The key point is that through the specific structure, the physical slow release characteristic of the reed stalks is combined with the synergistic gain effect of the acorus calamus leaves and the artemisia apiacea leaves, so that the inner pad can continuously and efficiently exert the dual effects of expelling parasites and preventing mildew in the egg laying, hatching and brooding periods of pigeons.

This invention discloses a method for extracting Artemisia annua extract from Artemisia annua leaves and its application. The method includes the following steps: taking Artemisia annua leaves, packaging and drying them; placing the dried Artemisia annua leaves into a wide-mouth bottle, ensuring the leaves are fully soaked, and then placing the fully soaked leaves into an ultrasonic instrument for ultrasonic-assisted extraction; after ultrasonic-assisted extraction, filtering to obtain filter residue, and then repeating ultrasonic-assisted extraction to obtain all the filtrate; rotary evaporating all the filtrate to obtain a concentrated solution, which is then dissolved again in an appropriate amount of pure water, subjected to chromatographic separation, and gradient elution; collecting the specified eluent fraction, and then rotary evaporating it again to obtain Artemisia annua extract. This invention provides a method for extracting Artemisia annua extract from Artemisia annua leaves and its application, which can extract other active ingredients from Artemisia annua, improve the bioavailability of other active ingredients in Artemisia annua, and expand its application in pharmaceuticals and cosmetics.

An artemisia annua defoliator based on a parallelogram mechanism. The present invention designs a defoliation device for artemisia annua in agriculture, which relates to the technical field of agricultural defoliation. Specifically, it is an artemisia annua defoliator based on a parallelogram mechanism, including a frame, a beating device, a discharging device, and a collecting device. China is a major producer of artemisia annua. The traditional collection method is to expose it to the sun after harvesting, use farm tools to beat it after sun exposure, and then perform a series of operations to finally obtain artemisia annua leaves. However, this method has poor working conditions, long consumption time, low collection efficiency, and high labor costs. The present invention provides an artemisia annua defoliator based on a parallelogram mechanism, which is used to beat the sun-exposed artemisia annua plants, greatly reducing the workload and solving the above problems to a certain extent.

The application discloses a drying and impurity removing device for artemisia annua plants, which comprises a mesh belt conveyor, a plurality of hot air machines arranged below the mesh belt of the mesh belt conveyor, a negative pressure recovery cover arranged above the mesh belt of the mesh belt conveyor, a negative pressure device in communication with the negative pressure recovery cover, a screening mechanism in communication with the negative pressure device through a hot air pipeline, a plurality of roller shafts connected to the screening frame, and a collecting frame arranged below the output end of the roller shafts. The application also discloses a drying and impurity removing method for artemisia annua plants. The artemisia annua plants are directly placed on the mesh belt conveyor, and the artemisia annua plants are dried by the hot air machines, so that the labor intensity is reduced, the efficiency is improved, and the loss rate of the artemisia annua plants is reduced. Meanwhile, the waste heat of the hot air machines is recycled and reused, the screening mechanism is further screened and impurities are removed by using the waste heat of the hot air machines, the whole drying process of the artemisia annua plants is shortened, and the mechanical damage to the artemisia annua leaves is effectively reduced.

An artemisinin dynamic cocurrent-countercurrent extraction method belongs to the technical field of artemisinin extraction, and comprises a cocurrent-countercurrent extraction device and a cocurrent-countercurrent extraction method. The concurrent and countercurrent extraction device comprises three sections of directly connected extraction tanks and a solvent bridge pipe, the extraction tanks are respectively a concurrent extraction tank, a transition extraction tank and a countercurrent extraction tank, and during extraction, sweet wormwood leaves are put into the three extraction tanks from a feed port of the concurrent extraction tank and gradually filled into the three extraction tanks; injecting a solvent into the countercurrent extraction tank, and gradually filling the three tanks with the solvent; inputting the solvent in the transition extraction tank into the down-flow extraction tank by using a solvent bridge pipe, and gradually filling the down-flow extraction tank with the solvent from the outer end of the down-flow extraction tank; then starting a stirring shaft to perform dynamic stirring extraction; the method has the beneficial effects that the extraction yield of artemisinin is effectively improved, the solvent loss is reduced, and the solvent recovery rate is improved.

A method for increasing the yield of crude artemisinin, belonging to the field of artemisinin extraction technology, includes: an extraction step: adding Artemisia annua leaves to a petroleum ether solvent, and simultaneously extracting by heating and stirring, ultrasound or microwave; a separation step: performing liquid-solid separation by filtration or centrifugation to obtain an artemisinin extract containing artemisinin; a concentration step: evaporating and concentrating the artemisinin extract to obtain an artemisinin concentrate; a crystallization step: placing the artemisinin concentrate into a crystallization tank for crystallization, and filtering after crystallization to obtain the mother liquor and crude artemisinin; the crystallization tank is a cold and hot crystallization tank with both a cooling medium ring cavity and a heating medium ring cavity, which can rapidly cool the upper artemisinin extract while maintaining a constant temperature in the lower artemisinin extract, reducing impurities adhering to the low-temperature crystals, accelerating the crystallization speed and improving the crystallization recovery rate of crude artemisinin.

The invention discloses an extraction method of Artemisia annua protoplast, which comprises the following steps: 1) taking Artemisia annua leaves as a material, and carrying out enzymolysis on the Artemisia annua leaves by using an enzymatic hydrolysate containing cellulase, pectinase, macerozyme and mannitol; 2) cleaning a suspension obtained by enzymolysis and separating out a protoplast suspension; and (3) centrifuging and resuspending the protoplast suspension obtained in the step (2) to obtain a pure protoplast suspension. The invention further discloses an instantaneous transformation method of the artemisia annua protoplast. By optimizing the enzymolysis reaction system and the concentration of the osmotic pressure regulator, a stable protoplast extraction reaction system is established, the integrity and yield of the protoplast obtained through separation and extraction are improved, and efficient extraction and separation of the artemisia annua leaf protoplast are achieved.