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103 results about "Daidzin" patented technology

Daidzin is a natural organic compound in the class of phytochemicals known as isoflavones. Daidzin can be found in Japanese plant kudzu (Pueraria lobata, Fabaceae) and from soybean leaves. Daidzin is the 7-O-glucoside of daidzein.

Inhibitors and Enhancers of Uridine Diphosphate-Glucuronosyltransferase 2B (UGT2B)

A UGT2B inhibitor capable of increasing the bio-availability of a drug, is a compound in a free base or a pharmaceutically acceptable salt form that is selected from the group consisting of: capillarisin, isorhamnetin, β-naphthoflavone, α-naphthoflavone, hesperetin, terpineol, (+)-limonene, β-myrcene, swertiamarin, eriodictyol, cineole, apigenin, baicalin, ursolic acid, isovitexin, lauryl alcohol, puerarin, trans-cinnamaldehyde, 3-phenylpropyl acetate, isoliquritigenin, paeoniflorin, gallic acid, genistein, glycyrrhizin, protocatechuic acid, ethyl myristate, umbelliferone, PEG (Polyethylene glycol) 400, PEG 2000, PEG 4000, Tween 20, Tween 60, Tween 80, BRIJ® 58, BRIJ® 76, Pluronic® F68, Pluronic® F127, and a combination thereof. A UGT2B enhancer capable of enhancing a clearance rate of morphine-like analgesic agents, is a compound in a free base or a pharmaceutically acceptable salt form that is selected from the group consisting of: nordihydroguaiaretic acid, wogonin, trans-cinnamic acid, baicalein, quercetin, daidzein, oleanolic acid, homoorientin, hesperetin, narigin, neohesperidin, (+)-epicatechin, hesperidin, liquiritin, eriodictyol, formononetin, quercitrin, genkwanin, kaempferol, isoquercitrin, (+)-catechin, naringenin, daidzin, (−)-epicatechin, luteolin-7-glucoside, ergosterol, rutin, luteolin, ethyl myristate, apigenin, 3-phenylpropyl acetate, umbelliferone, glycyrrhizin, protocatechuic acid, poncirin, isovitexin, 6-gingerol, cineole, genistein, trans-cinnamaldehyde, and a combination thereof.
Owner:NAT DEFENSE MEDICAL CENT

Method for testing effective ingredients of Gegen Qinlian medicine

The invention provides a method to detect effective ingredients of radices puerarire, radices scutellariae and coptis chinensis medicine (Gegen Qin Lian Medicine) by high efficiency liquid chromatogrophy. The method consists of the following steps: firstly, a sampling liquid to be detected and a mixing control solution are prepared, which are then respectively detected by the following methods: a chromatographic column stuffed by octadecyl silane bonded silica gel is injected by the sample size of 1 to 20ul, the column temperature is controlled between 10 to 40 DEG C, then gradient elution is carried out by a mobile phase which is composed of phase A and phase B at a flow velocity of 0.3 to 1.5ml/min according to the stipulated procedure; moreover, multi-wavelength ultraviolet is employed to detect the eluent so as to obtain the high efficiency liquid chromatograms of the detected medicines and the control solution; finally, the high efficiency liquid chromatograms of the detected medicines and the control solution are compared so as to determine the effective components of puerarin, daidzin, wogonoside, baicalin, palmatine and berberine and the contents thereof. The phase A in the method of the invention is ammonium acetate solution with the concentration of 0.01 to 0.1mol/l, and the phase B is acetonitrile.
Owner:SOUTHERN MEDICAL UNIVERSITY

UPLC method for detecting components in radix puerariae, radix puerariae extract and radix puerariae-containing preparation

The present invention provides a UPLC method for qualitatively and quantitatively detecting the contents of six components such as 3'-hydroxy puerarin, puerarin, puerarin-6"-O-xyloside, 3'-methoxy puerarin, mirificin and daidzin in radix puerariae, radix puerariae extracts and radix puerariae-containing preparations by adopting puerarin as a reference substance. The UPLC method comprises: preparing a reference substance solution and a testing sample solution, and carrying out gradient elution by adopting 0.1% acetic acid as a mobile phase A and adopting acetonitrile as a mobile phase B, wherein the detection wavelength is 250 nm, the chromatographic column is SB-C18, RRHD 1.8 [mu]m, 2.1*100 mm, the column temperature is 31 DEG C, the flow rate is 0.4 mL / min, and the injection volume is 1 [mu]L; comparing the obtained chromatogram with a radix puerariae herb finger print, wherein the main peak is puerarin, and other components are corresponding to various peaks in a one-to-one manner so as to identify the herb; and calculating the contents of the six components in the radix puerariae by combining relative calibration factors (the relative calibration factor of 3'-hydroxy puerarin is 1.253, the relative calibration factor of puerarin is 1.000, the relative calibration factor of puerarin-6"-O-xyloside is 1.422, the relative calibration factor of 3'-methoxy puerarin is 1.297, the relative calibration factor of mirificin is 1.332, and the relative calibration factor of daidzin is 1.030) and the peak area of puerarin in the contrast solution.
Owner:HUAZHONG UNIV OF SCI & TECH
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