7 results about "Stem bark" patented technology

The invention belongs to the technical field of phytochemistry, and particularly relates to a benzo [e] pyrrolo [1, 2-a] aza # imgabs0 # compound as well as a preparation method and application thereof. The preparation method comprises the following steps: fermenting cigar stem barks, drying the fermented cigar stem barks in the sun, crushing and sieving to obtain a material a; adding a first solvent into the material a for reflux extraction to obtain an extracting solution, concentrating the extracting solution, adding a second solvent for extraction, combining the extracted extraction phases, and performing vacuum concentration to obtain an extract b; carrying out silica gel column chromatography on the extract b, eluting with chloroform-acetone eluent, monitoring by TLC (Thin Layer Chromatography), and collecting the eluent; and purifying the eluent by using a sephadex column, and separating and purifying by using high performance liquid chromatography to obtain the benzo [e] pyrrolo [1, 2-a] aza # imgabs 1 # compound with tobacco black shank resisting activity. The compound is novel in structure, has relatively good black shank resistance activity, can be used as a lead compound for resisting tobacco black shank, and is used for research and development of biological pesticides for preventing and treating tobacco black shank.

The application discloses a method for improving the growth and fruiting rate of 2-3-year-old Carya illinoensis container grafting seedlings after afforestation, which comprises the following steps: selecting 2-3-year-old Carya illinoensis container grafting seedlings and young seedling container seedlings, transplanting the container seedlings and the young seedling container seedlings into planting ponds in an afforestation area, setting up a wound on the stem bark of the container seedlings and the young seedling container seedlings respectively after scratching the stem bark, binding the wounds of the container seedlings and the young seedling container seedlings by using plastic cloth, filling soil, and normally maintaining; after the wounds are fully healed, the plastic cloth is removed, the part above the wound joint of the young seedling container seedlings is cut off, and the young seedling container seedlings are normally maintained until the roots of the young seedling container seedlings and the Carya illinoensis container seedlings are alive. The method can not only protect the root system of the container seedlings by the root system protection matrix, but also can release the root system winding, enhance the root system activity, and promote the rapid growth and development of the root system after transplanting.

The invention discloses a dissociation method and application of rubber tree differentiated xylem protoplast, and the dissociation method comprises the following steps: peeling off green and tender branches of a rubber tree along the stem, cutting the stem into a plurality of sections after the stem bark is peeled off, and immersing into enzymatic hydrolysate; carrying out enzymolysis and light shaking at room temperature under a dark condition for 4 hours, adding a W5 solution, carrying out light shaking, uniformly mixing, filtering, centrifuging, pouring out supernate, and retaining protoplast precipitate; adding the protoplast precipitate into a pre-cooled W5 solution, resuspending, washing, pouring out supernate, and retaining the protoplast precipitate; re-suspending the protoplast precipitate in an MMG solution, and placing on ice; trypan blue dyeing is used for detecting cell concentration and cell activity; and loading the obtained protoplast into a W5 solution and a WI solution respectively for overnight treatment. The efficient and stable method for extracting the xylem differentiated protoplast is established by stripping young branches of rubber trees, performing enzymolysis and differentiation on xylem tissues to obtain the protoplast and trying different osmotic pressures.

This invention discloses an extract of *Prunus armeniaca* for treating prostatitis, its preparation method, and its application. Specifically, it relates to the fields of natural plant extraction and male urinary system pharmaceuticals. The *Prunus armeniaca* extract is prepared from the dried stem bark of *Prunus armeniaca*. On a dry weight basis, the extract contains at least 8.5% phytosterols and at least 12% fatty acids. This invention significantly improves the purity and extraction rate of phytosterols and fatty acids in the *Prunus armeniaca* extract by optimizing the extraction and purification process. It overcomes the bottlenecks of insufficient dissolution of active ingredients and high levels of impurities in traditional methods. Chromatographic detection ensures precise control and batch-to-batch stability of product quality. This naturally derived extract is highly safe and can be used alone or in combination with *Saw Palmetto* and pumpkin seed extracts. Through synergistic effects, it significantly enhances anti-inflammatory and prostate function-improving effects, providing a highly effective and safe new option for the treatment of prostatitis.

The invention discloses a preparation method of a composite paper filter tip, which comprises the following steps: (1) ultrasonically extracting stem barks of air-cured tobaccos with hot water, and then carrying out solid-liquid separation; (2) performing solid-liquid separation and pulping to obtain bark pulp, and preparing a substrate by adopting a method for preparing reconstituted tobacco by a papermaking method; (3) preparing a coating liquid by using the stem bark paste; (4) spraying the coating liquid on a substrate, then spraying by using a polyvinyl alcohol solution, then coating by using the zeolite composite material, and finally spraying by using the polyvinyl alcohol solution; (5) obtaining a paper filter tip; and (6) compounding to obtain the composite paper filter tip. According to the composite paper filter tip, the sensory quality of cigarettes can be obviously improved, and particularly, the content of nitrosamine in the smoke of the cigarettes can be obviously reduced.

The invention provides a method for preparing a paper filter tip based on air-cured tobacco waste, which comprises the following steps: (1) carrying out hot water ultrasonic extraction by using air-cured tobacco waste stem bark, and then carrying out solid-liquid separation; (2) pulping the solid part, and preparing a substrate by adopting a method for preparing reconstituted tobacco by a papermaking method; (3) concentrating the liquid part to obtain a bark paste, and preparing a coating liquid; (4) spraying a coating liquid on the substrate; (5) cutting the sprayed substrate into long filaments, gathering the long filaments into a roll, and wrapping the roll with filter stick forming paper; and cutting to a required length to obtain the paper filter rod. The invention further discloses application of the prepared paper filter tip to a composite filter tip.

This invention relates to the field of novel compounds from the field of bald cypress, and provides an antitumor active compound, its preparation method, and its application. The antitumor active compound provided by this invention ( Taiwanin J This compound, a secondary metabolite of *Cephalotaxus fortunei*, belongs to the lignan class of compounds. Its antitumor activity enriches the diversity of lignan compounds and exhibits significant inhibitory activity against HeLa and A549 cells, showing broad application prospects in the preparation of antitumor drugs. Furthermore, it can serve as a lead compound, which is of great significance for the development of novel antitumor drugs. This invention also provides a method for preparing the antitumor active compound described above. The preparation method provided by this invention is simple to operate, low in cost, and easy to implement industrially. Moreover, this invention uses *Cephalotaxus fortunei* stem bark as raw material for extraction, achieving effective utilization of this rare plant resource, which aligns with the concepts of green environmental protection and a low-carbon economy.