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35 results about "Annonaceous Acetogenins" patented technology

The Annonaceous acetogenins are promising new antitumor and pesticidal agents that are found only in the plant family Annonaceae. Chemically, they are derivatives of long-chain fatty acids. Biologically, they exhibit their potent bioactivities through depletion of ATP levels via inhibiting complex I of mitochondria and inhibiting the NADH ...

Nanosuspension of annonaceous acetogenin drugs and preparation method of nanosuspension

The invention belongs to the technical field of medicines, and in particular relates to a nanosuspension of annonaceous acetogenin drugs prepared from such amphiphilic stabilizers as mPEG PCL, mPEG PLA, mPEG PLGA, mPEG DSPE, mPEG Chol, SPC, Tween80, BSA, TPGS and the like, as well as a preparation method and an application of the nanosuspension. The annonaceous acetogenin total lactone nanosuspension is prepared by virtue of a solvent precipitation-ultrasonic injection method, and according to a prescription, the proportioning ratio of the annonaceous acetogenin drugs to the stabilizer is at 1 to (0.02-10) (in percentage by weight). The prepared annonaceous acetogenin nanosuspension can reach a load-loading capacity to 90% to the greatest extent and can reach a minimum grain size to 123.2nm, and the nanosuspension is good in polydispersity. The nanosuspension is stable in both gastrointestinal fluid and plasma, and the nanosuspension is applicable to oral administration and injection administration; the nanosuspension has a good in-vitro sustained-release effect and is free from burst release; the nanoparticle, in comparison with a crude drug solution, is more obvious in tumor cell inhibitory rate in vitro; the nanosuspension, in in-vivo tissue distribution, shows tumor passive targeting; therefore, the nanosuspension is beneficial for enhancing efficacy and reducing toxic and side effects. Meanwhile, an in-vivo efficacy experiment shows that the nanosuspension is outstanding in antineoplastic efficacy, and the nanosuspension has a broad development prospect.
Owner:INST OF MEDICINAL PLANT DEV CHINESE ACADEMY OF MEDICAL SCI

An annonacein nanoparticle based on cyclodextrin and lecithin as carrier and its preparation method and application

The invention relates to annonaceous acetogenins nanoparticles, which are prepared by taking cyclodextrin and lecithin as vectors, as well as a preparation method and an application of annonaceous acetogenins nanoparticles. The annonaceous acetogenins (annonaceous acetogenins total lactone or monomer ingredients thereof) nanoparticles are prepared by virtue of a solvent precipitation method; the mass ratio of the annonaceous acetogenins to the cyclodextrin to the lecithin is at 1 to (0.02-20) to (0.02-20); and in accordance with an optimal prescription, the combining proportion of the annonaceous acetogenins to the cyclodextrin to the lecithin is at 4 to 2 to 1 (in percentage by mass). The average grain size of the annonaceous acetogenins nanoparticles is 20-1000nm, and the annonaceous acetogenins nanoparticles are good in dispersity; the annonaceous acetogenins nanoparticles are stable in both gastrointestinal fluid and plasmid, and the annonaceous acetogenins nanoparticles are suitable for both oral administration and intravenous injection; with the application of the nanoparticles, the inhibitory effect of the annonaceous acetogenins on tumor cells can be significantly improved, and meanwhile, in vivo anti-tumor efficacy can be enhanced; and the annonaceous acetogenins nanoparticles have a broad development prospect.
Owner:INST OF MEDICINAL PLANT DEV CHINESE ACADEMY OF MEDICAL SCI

Method for extracting annonaceous acetogenin from atemoya

The invention discloses a method for extracting annonaceous acetogenin from atemoya, and belongs to the field of an annonaceous acetogenin extracting processes. The method comprises the following steps: pretreating an extracted raw material; drying the pretreated raw material, and then crushing by using a vacuum crusher to obtain crushed raw material powder; placing the crushed raw material powderinto a quick freezer for quick freezing to obtain ice powder, crushing the ice powder by using a crusher, unfreezing the crushed ice powder, and drying steam to obtain dry fine powder; placing the dried fine powder and water into a vacuum stirring tank for vacuum stirring; filtering to remove filter residues, and pouring filtrate into an extraction kettle for extraction; and collecting the extract after extracting for 2vh, extracting the extract with chloroform for 4 times, combining chloroform layers, carrying out vacuum filtration, recovering a solvent under reduced pressure at the temperature of 45 DEG C, and drying under reduced pressure to obtain the final product. The raw material is crushed for multiple times, and is crushed again after being frozen, so that the effect is good, theextraction efficiency of the raw material in the later period is high, a large amount of organic solvents are avoided, and the extraction efficiency is high.
Owner:广西硕果农业开发有限公司
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