Yejuhua

This product is the dry head of Chrysanthemum indicum L.In autumn and winter,the flowers are picked at the beginning of flowering,dried in the sun,or steamed and dried in the sun.
[properties]this product is quasi spherical,with a diameter of 0.3~1cm and brown yellow.The involucre consists of 4-5 layers of bracts,the outer bracts are oval or strip-shaped,the middle part of the outer surface is grayish green or light brown,usually covered with white hairs,and the edge is membranous;Inner bracts long elliptic,membranous,outer surface glabrous.There are some residual pedicels at the base of involucre.1 round of glossy flowers,yellow to brownish yellow,wrinkled and curled;Most tubular flowers,dark yellow.Light body.It is fragrant and bitter.
[identification]take 0.3g powder of this product,add 15ml methanol,ultrasonic treatment for 30 minutes,cool it,filter it,and take the filtrate as the test solution.Another 0.3g of wild chrysanthemum reference material was taken and prepared into the reference material solution by the same method.Then take the control sample of Mongolian flowering glycoside and add methanol to make a solution containing 0.2mg per 1ml as the control solution.According to the test of thin layer chromatography(general rule 0502),absorb 3 of the above three solutionsμl.Point on the same silica gel G thin layer plate respectively,use the upper solution of butyl acetate formic acid water(2:1:1)as the developing agent,develop,take out,dry,spray with 2%aluminum trichloride ethanol solution,dry with hot air,and inspect under ultraviolet lamp(365nm).In the chromatogram of the test sample,fluorescent spots of the same color are displayed at the positions corresponding to the chromatogram of the control medicinal material and the chromatogram of the control sample.
[inspection]the moisture content shall not exceed 14.0%(the second method of general rule 0832).The total ash content shall not exceed 9.0%(general rule 2302).Acid insoluble ash content shall not exceed 2.0%(general rule 2302).
[content determination]determine according to high performance liquid chromatography(general rule 0512).The chromatographic conditions and system suitability test take octadecyl silane bonded silica gel as filler;Methanol water glacial acetic acid(26∶23∶1)was used as mobile phase;The detection wavelength was 334 nm.The number of theoretical plates shall not be less than 3000 according to the peak of Mongolian anthocyanin.Preparation of reference solution:take an appropriate amount of Mongolian flowering glycoside reference,weigh it accurately,add methanol to dissolve it(heat it if necessary)and make it contain 25%per 1mlμG solution.For the preparation of the test solution,take about 0.25g of the powder(passing the No.3 sieve),accurately weigh it,place it in a conical flask with a stopper,accurately add 100ml of methanol,weigh it,heat and reflux for 3 hours,cool it,weigh it again,make up the lost weight with methanol,shake it well,filter it,and take the filtrate.The determination method accurately absorbs 20%of the control solution and 20%of the test solutionμl.Inject it into the liquid chromatograph for determination.This product is calculated as a dry product,and the content of Mongolian flowering glycoside(c28h32o14)shall not be less than 0.80%.
[nature,taste and meridian returning]bitter,pungent and slightly cold.Return to the liver and heart meridian.
[functions and indications]clearing away heat and detoxification,purging fire and calming the liver.Used for sore,carbuncle,redness,swelling and pain,headache and dizziness.
[usage and dosage]9~15g.For external use,wash in decoction or apply ointment.
[storage]store in a cool and dry place,moisture-proof and mothproof.