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282 results about "Flavonols" patented technology

Flavonols are a class of flavonoids that have the 3-hydroxyflavone backbone (IUPAC name : 3-hydroxy-2-phenylchromen-4-one). Their diversity stems from the different positions of the phenolic -OH groups. They are distinct from flavanols (with "a") such as catechin, another class of flavonoids.

Gingko handmade soap and manufacturing method thereof

The invention belongs to the technical field of daily cleaning supplies and in particular relates to gingko handmade soap. The gingko handmade soap comprises the following components in percentage by weight: 70 to 99.5 percent of transparent soap base, 0.05 to 20 percent of gingko extract and 0.05 to 3 percent of essential oil or essence. Compared with the prior art, the gingko handmade soap has the advantages that the gingko extract is added into the handmade soap, and oxygen radicals can be effectively eliminated and growth of melanin can be suppressed through the trace elements such as flavone, zinc, manganese and molybdenum, and flavonoid glycosides and flavonol, so that the skin is cleaned, the effects of whitening the skin, resisting wrinkle and delaying senescence are achieved, and the gingko handmade soap is a natural good item of protecting the skin and beautifying; and moreover, the glycerol which is contained in the handmade soap and is hardly extracted has the effect of deeply moisturizing and has mild characteristics, so that the skin is moist, glossy and high in resilience. In addition, preservatives and other chemical substances are not required to be added into the handmade soap, and the handmade soap is healthy and environment-friendly. In addition, the invention also discloses a method for manufacturing the handmade soap.
Owner:东莞市隆威实业有限公司

Real-time release detection method for ginkgo leaf medicinal material

ActiveCN103439288AFinished product quality and safetyFinished product quality is effectiveComponent separationColor/spectral properties measurementsBiotechnologyMedicinal herbs
The invention provides a real-time release detection method for ginkgo leaf medicinal material. The method comprises the following steps: collecting ginkgo leaf medicinal material in different places of production and different batches; detecting contents of water, extracts and flavonoid glycosides in ginkgo leaves; collecting near-infrared spectroscopic data of ginkgo leaf medicinal material powder; establishing a quantitative analysis model and a real-time release quantitative standard for each quality control index of ginkgo leaves; establishing a qualitative analysis model and a real-time release qualitative standard for quality evaluation of ginkgo leaves. The near-infrared spectroscopic data is introduced into the real-time release detection method for ginkgo leaf medicinal material, the method is used for quickly detecting the contents of water, extracts and flavonoid glycosides in ginkgo leaves and judging whether the quality of the medicinal material is qualified, real-time release detection is performed on the ginkgo leaf medicinal material according to quantitative and qualitative detection results, and only the medicinal material in accordance with both qualitative and quantitative real-time release standards can be released for subsequent production technical process, thus the stability and uniformity of ginkgo leaf preparations in different batches are ensured, and the quality level of the ginkgo leaf preparations is improved.
Owner:ZHEJIANG UNIV

Ginkgo flavone and lactone -cyclodextrin derivate inclusion complex and preparation method thereof

The invention discloses an extract of Ginkgo Biloba leaves-cyclodextrin derivative inclusion compound and a preparation method thereof, which is prepared from 10 to 24 percent of total flavonol glycoside, 2 to 6 percent of terpene lactone and 70 to 88 percent of cyclodextrin derivative and auxiliary materials, according to the weight percentage; the preparing method comprises the following steps: dissolving cyclodextrin derivative in water, adding extract of Ginkgo Biloba leaves; stirring for 6 to 8 hours; reducing the pressure and vacuum drying at the temperature of 55 to 65 DEG C; and obtaining the extract of Ginkgo Biloba leaves-cyclodextrin derivative inclusion compound in a solid grinding way. The invention adopts an inclusion technology to greatly enhance the dissolubility and the dissolution of the ginkgo leaves in the water, to enhance the absorption in human stomach and intestine, and to simultaneously greatly increase the stability of the principal components in the extract of Ginkgo Biloba leaves, the extract of Ginkgo Biloba leaves and terpene lactones after being processed by adopting the inclusion technology. The extract of Ginkgo Biloba leaves, after being processed by adopting the inclusion technology, is 1 to 2 times higher than the ordinary preparation in bioavailability, and can be used for preparing the drugs for improving the disease of cardio-cerebrovascular systems, and preventing and remedying coronary heart diseases.
Owner:陈建海

A kind of preparation technology of water-soluble ginkgo leaf extract

The invention relates to a water-soluble ginkgo leaf extract and its preparation technology, The method of the invention comprises: taking common ginkgo biloba as a raw material, mixing with acetone and extracting, concentrating, diluting by adding water, cryoprecipitating, filtering, performing a gradient elution to a filtrate through macroporous adsorption resin, carrying out an alcohol precipitation by ethanol with high purity, water extraction and cryoprecipitating, concentrating, drying to obtain the water-soluble ginkgo leaf extract, wherein the content of total flavonol glycoside is greater than or equal to 27%; the content of lactone content is 9%-12%, wherein the content of Terpene Lactones A is greater than or equal to 2.1%, the content of Terpene Lactones B is greater than or equal to 0.9%, the content of Terpene Lactones C is greater than or equal to 1.2%, and the lactone ratio of GA:GB:GC is close to 7:3:4; the water-solubility is greater than and equal to 10%; the ginkgolic acid is less than and equal to 1ppm, which can be taken as a raw material used for injection. The invention has the advantages of simple production technology, high and stable product quality, high finished product yield, low cost and good economic benefit.
Owner:ZHEJIANG CONBA PHARMA

Flavonols

A compound of the formula (I):
wherein
    • R is selected from the group consisting of H, alkyl, alkenyl, alkynyl, heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl and acyl, each of which may be optionally substituted;
    • R1 is an organic moiety that is capable of being converted into a charged group;
    • each X and Y is independently selected from the group consisting of H, halogen, —CN, —NO2, —CF3, —OCF3, alkyl, alkenyl, alkynyl, haloalkyl, haloalkenyl, heteroalkyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, heterocycloalkenyl, aryl, heteroaryl, cycloalkylalkyl, heterocycloalkylalkyl, arylalkyl, heteroarylalkyl, arylalkenyl, cycloalkylheteroalkyl, arylheteroalkyl, heterocycloalkylheteroalkyl, heteroarylheteroalkyl, hydroxy, hydroxyalkyl, alkoxy, alkoxyalkyl, alkoxyaryl, alkenyloxy, alkynyloxy, cycloalkyloxy, heterocycloalkyloxy, aryloxy, heteroaryloxy, arylalkyloxy, phenoxy, benzyloxy, amino, alkylamino, aminoalkyl, acylamino, arylamino, sulfonylamino, sulfinylamino, —COOH, —COR2, —COOR2, —CONHR2, —NHCOR2, —NHCOOR2, —NHCONHR2, C(═NOH)R2, alkoxycarbonyl, alkylaminocarbonyl, sulfonyl, alkylsulfonyl, alkylsulfinyl, arylsulfonyl, arylsulfinyl, aminosulfonyl, SR2 and acyl, each of which may be optionally substituted;
    • each R2 is independently selected from the group consisting of H, alkyl, alkenyl, alkynyl, haloalkyl, heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, cycloalkylalkyl, heterocycloalkylalkyl, arylalkyl, heteroarylalkyl, and acyl, each of which may be optionally substituted;
    • m is an integer selected from the group consisting of 0, 1, 2, 3, 4 and 5;
    • p is an integer selected from 0, 1, 2 and 3;
or a pharmaceutically acceptable salt or prodrug thereof.
Owner:WOODMAN OWEN L +2
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