Method for testing content in quality control of Bittersweet Herb gel preparation for eliminating rash and relieving itching
The technology of a gel preparation and a detection method, which is applied in the field of medicine, can solve the problems such as the lack of Baiying, and achieve the effects of effective menthol content, perfect quality standard and high stability
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Embodiment 1
[0027] Example 1: Content Determination of Rutin in Baiying Xiaozhen Zhiitch Gel Preparation
[0028] (1), materials, reagents and instruments:
[0029] Material: Baiying Xiaozhe Antipruritic Gel (provided by Dongguan Jinfang Biomedical Incubator Co., Ltd., batch number: 20050209)
[0030] Reagents: Borax (chemically pure), rutin (standard grade), calcium oxide (chemically pure), hydrochloric acid (chemically pure).
[0031] Instruments: 721-type spectrophotometer, vacuum pump, JJ500 electronic balance (Changshu Shuangjie Testing Instrument Factory), etc.
[0032] (2), preparation of reference substance solution: Accurately weigh 25 mg of rutin reference substance dried under reduced pressure at 120°C to constant weight, place it in a 100ml volumetric flask, add 60ml of 75% ethanol, ultrasonically oscillate to dissolve, add 75% Ethanol to the mark, shake well, it is the rutin reference solution, each 1ml contains 0.25mg of anhydrous rutin.
[0033] (3), determination of mea...
Embodiment 2
[0036] Embodiment 2: Determination of the content of menthol in Baiying Xiaozhen Zhiitch gel preparation
[0037] (1), instruments and reagents:
[0038] HP6890 Gas Chromatograph (Hewlett-Packard, USA), G×300A Nitrogen, Cyclohexanone, Absolute Ethanol (analytical grade); Baiying Xiaozhang Antipruritic Gel (self-made, batch numbers 20050209, 20050218, 20050221).
[0039] (2), measure with gas chromatography, chromatographic condition is:
[0040] PEG-20M elastic quartz capillary column (Supelco-Wax), 30m×0.25mm; FID detector; inlet temperature 230°C; detector temperature 250°C; split injection, split ratio 10:1; column temperature 130°C ;The number of theoretical plates should be no less than 8000 based on the cyclohexane peak; the carrier gas is nitrogen, and the flow rate is 3.3ml / min; the internal standard is cyclohexanone;
[0041] (3) Preparation of the test solution: Take 1.0 g of Baiying Xiaozhen Antipruritic Gel Preparation, weigh it accurately, put it in a beaker, ad...
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