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73 results about "Cucurbitacin" patented technology

Cucurbitacin is any of a class of biochemical compounds that some plants — notably members of the family Cucurbitaceae, which includes the common pumpkins and gourds — produce and which function as a defence against herbivores. Cucurbitacins are chemically classified as triterpenes, formally derived from cucurbitane, a triterpene hydrocarbon—specifically, from the unsaturated variant cucurbita-5-ene, or 19-(10→9β)-abeo-10α-lanost-5-ene. They often occur as glycosides. They and their derivatives have been found in many plant families (including Brassicaceae, Cucurbitaceae, Scrophulariaceae, Begoniaceae, Elaeocarpaceae, Datiscaceae, Desfontainiaceae, Polemoniaceae, Primulaceae, Rubiaceae, Sterculiaceae, Rosaceae, and Thymelaeaceae), in some mushrooms (including Russula and Hebeloma) and even in some marine mollusks.

Method for extracting and separating cucurbitacin B

The invention discloses a method for extracting and separating cucurbitacin B, which comprises the following steps: firstly, melon pedicels as a raw material are crushed and are refluxed and extracted by ethanol diacolation or ethanol, an extracting solution is extracted by ethyl acetate more than three times after being concentrated, and the ethyl acetate is recovered to obtain a total cucurbitacin extract; secondly, the total cucurbitacin extract is taken to be dissolved in a 25 to 45 percent of ethanol water solution, and the hydrolysis reaction is carried out in the presence of acetic acid; the pH value is adjusted to be neutral after full reaction, and the extract is concentrated to dry; and then the obtained extract is treated by purification so as to obtain a cucurbitacin B product with more than 60 percent of cucurbitacin B content, and the concentration of the acetic acid is 0.1 to 0.3 mol / L. Compared with the prior art for extracting and separating cucurbitacin B, the invention has the following advantages: the analogue (such as cucurbitacin B glucoside) of the cucurbitacin B is converted into the cucurbitacin B by the structural transformation in the process of extraction, so that the extraction rate of the cucurbitacin B is improved, the production process is simple, and the operation is simple.
Owner:ZHEJIANG UNIV OF TECH

Preparation and application of pedicellus melo tetracyclic triterpenoid cucurbitacin type compound

InactiveCN103360452AProlong replicative lifespanOrganic active ingredientsAntinoxious agentsAge related diseaseSolvent
The invention provides a preparation method of a cucurbitacin type compound. The preparation method comprises the steps of extracting pedicellus melo by using an organic solvent, performing solvent distribution on an extract, and performing silica gel column separation and purification by high performance liquid chromatography on a sample after concentration to obtain a cucurbitacin mixture and a cucurbitaceae type compound. Through an anti-aging yeast model-K6001 yeast cell, an active ingredient, namely the cucurbitacin type compound is proved to be capable of significantly prolonging the replicative life span of yeast, so that the cucurbitacin mixture and the cucurbitaceae type compound can be applied in preparation of medicaments for preventing and treating aging and preventing or / and treating age-related diseases. Simultaneously, the cucurbitacin mixture and the cucurbitaceae type compound can also be applied in preparation of nutritional compositions for delaying aging and preventing age-related diseases. The compound can also be used as a lead compound for optimizing the structure and can be applied in preparation of medicaments for delaying aging and preventing or / and treating age-related diseases. The general formula of the structure of the compound is shown in the specification.
Owner:ZHEJIANG UNIV +1

Novel medical function of cucurbitacin

The invention discloses a new usage of cucurbitacin (Cucurbitacins) in medicinal technique domain, which is characterized by the following: using cucurbitacin and medicinal component to treat laryngocarcinoma and increase quantity of leukocyte; preparing to multiple agent type such as tablet, powder medicine, capsule, granula, oral liquid, injection and so on with the cucurbitacin or medicinal component; proceeding independent give drug or combined treatment; using to leucopenia because of radiotheraphy of tumor patient; counting the give drug dosage of cucurbitacin with total cucurbitacin; giving the drug to mouse with 0. 001mg / kg-1mg / kg; giving to adult with 0. 1mg-5mg / day.
Owner:SHENYANG PHARMA UNIVERSITY +1

Cucurbitacin solid lipid nanoparticle preparation and preparation method thereof

The invention aims at providing a cucurbitacin solid lipid nanoparticle preparation and a preparation method thereof, which can effectively solve the problems of poor stability and low quality in the prior art. The technical scheme provided by the invention is that: in the preparation, the weight ratio of cucurbitacin, lipid material and surface active agent is 0.001-30:0.01-99:0.01-50, and the sum of the cucurbitacin, the lipid material and the surface active agent accounts for 0.1-40% of the total weight of the raw materials of the nanoparticle preparation. The preparation method is as follows: heating and melting the lipid material, the surface active agent and the cucurbitacin in dark place, fully and evenly stirring; adding water for dispersing to nanoscale; filtering and cooling in the melting state. The invention has scientific and simple composition, scientific compatibility, reasonable dosage, convenient use and fine stability. The invention integrates the advantages of high physical stability and low drug leakage of polymer nanoparticles with low toxicity and capability of large-scale production of liposome and emulsion, which is an innovation in cucurbitacin solid lipid nanoparticle preparation and has enormous economical and social benefits.
Owner:ZHENGZHOU UNIV

Total cucurbitacin phosphatidyl cholate mixed micelle oral quick-absorption membrane and preparation method thereof

The invention provides a total cucurbitacin phosphatidyl cholate mixed micelle oral quick-absorption membrane and a preparation method thereof, and belongs to the technical field of traditional Chinese medicinal preparations and preparation methods thereof. The preparation method comprises the following steps: preparing a lipid membrane from phospholipid; dissolving cholate into a phosphate buffer solution to prepare a cholate liquid; performing ultrasonic mixing on the lipid membrane and the cholate liquid in a water bath to obtain a phosphatidyl cholate blank micelle liquid; adding total cucurbitacin powder into the phosphatidyl cholate blank micelle liquid to obtain phosphatidyl cholate mixed micelle of total cucurbitacin; sequentially adding hydroxypropyl methyl cellulose, low substituted hydroxyprepyl cellulose, microcrystalline cellulose and PEG400 (polyethylene glycol 400) into the phosphatidyl cholate mixed micelle of total cucurbitacin to obtain the total cucurbitacin phosphatidyl cholate mixed micelle oral quick-absorption membrane. The oral quick-absorption membrane has the advantages of improving the solubility of total cucurbitacin, increasing adhesive and penetrating effect of the oral quick-absorption membrane to oral mucosa, avoiding irritation of total cucurbitacin to gastrointestinal tracts, remarkably improving the bioavailability of total cucurbitacin and reducing adverse response.
Owner:THE FIFTH MEDICAL CENT OF CHINESE PLA GENERAL HOSPITAL

Treatment agent of domestic sewage and preparation method thereof

The invention discloses a treatment agent of domestic sewage, prepared from the following raw materials in parts by weight: 5-15 parts of attapulgite, 4-12 parts of ferric chloride, 24-38 parts of coal gangue, 14-24 parts of montmorillonite, 6-10 parts of polyacrylamide, 10-16 parts of straw, 8-15 parts of starch, 2-5 parts of activated carbon, 18-30 parts of modified diatomite and 0.5-4 parts of cucurbitacin. The invention also discloses a preparation method of the chemical. The treatment agent of domestic sewage has broad sources of raw materials, low cost of raw materials, a simple preparation process, low equipment investment cost and applicability to large-scale industrial production; the cucurbitacin, straw, coal gangue, modified diatomite and other components in the treatment agent play a synergetic effect; and the treatment agent has low dosage, good treatment effect, stable performance and good quality of effluent water, reduces the cost of water treatment and has good economic benefit and social benefit.
Owner:ZHENGZHOU YUANRAN BIOLOGY TECH CO LTD
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