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Radix Bupleuri

North bupleurum: also known as: hard bupleurum. The root of the plant bupleurum, with a few stems at the base. The root is conical, taproot straight or slightly curved, the lower part is divergent, the root head expanded, a pimple shape, 6 ~ 20 cm long, 0.6 ~ 1.5 cm in diameter, the outer skin is grey-brown or grey-brown, there are longitudinal wrinkles and root scars, the top has fine hair or hard residual stem...

Chinese Pharmacopoeia:Radix Bupleuri

Pinyin: Chái Hú

English name:ADIX BUPLEURI


Source:
This product is the dried root of Bupleurum chinense DC. Or Bupleurum scorzonerifolium Willd. According to different characters, it is known as "north bupleurum" and "south bupleurum" respectively. Spring, autumn two seasons digging, remove stem and leaves and sediment, dry.


Properties:

North bupleurum: also known as: hard bupleurum.

The root of the plant bupleurum, with a few stems at the base. The root is conical, taproot straight or slightly curved, the lower part has divergent, the root head is expanded, present a knob-like shape, long 6 ~ 20 cm, diameter 0.6 ~ 1.5 cm, the outer skin is grey-brown or grey-brown, there are longitudinal wrinkles and root scars, the top has fine hair or hard residual stem. The quality is stronger. Not easy to break, section of wood fiber, yellow and white. The breath is fragrant and the taste is bitter. To the thick long root, thin skin, the root is less preferred.

Also known as: soft bupleurum (" herba "), fragrant bupleurum. For the root of the plant narrow leaf bupleurum. Appearance and bupleurum bupleurum similar, but the root is thin, less divergence, more bending is not straight, long 4 ~ 10 cm, 6 ~ 10 mm in diameter, the surface of reddish-brown, longitudinal wrinkle and fibrous roots, no knobby head at the top, and there are on the ground stem leaves after dying left hairy fiber. Brittle, easy to break, flat section, light brown. Smells like bupleurum kitchenum. The thick length of the root strip, no root is preferred.


Habitat sub-division:

1) bupleurum chinense
Mainly produced in liaoning, gansu, hebei, henan. In addition, shaanxi, Inner Mongolia, shandong and other places also produced.

2) the south radix bupleuri
Mainly produced in hubei, jiangsu, sichuan. In addition, anhui, heilongjiang, jilin and other places also produced.


Identification:

(1) take 0.5g of the powder, add 10ml water and shake it vigorously to produce lasting foam.

(2) take 0.5g of the powder, add 20ml methanol, place it in water bath at 80℃ for 1 hour, cool it, filter it, concentrate the filtrate to 5ml, filter it, and use the filtrate as the test solution. In addition, bupleurum saponin a and bupleurum saponin b control substances were taken, and methanol was added to make a mixture solution containing 0.5mg each in 1ml as the control solution. According to thin layer chromatography (appendix Ⅵ B) test, 5 mu l learned these two solutions, each point in the same silica G thin layer plate, with ethyl acetate ethanol - water (8:2:1) as developing agent,, remove and dry spray of dimethyl amino benzene, formaldehyde, by 2% to 40% sulfuric acid solution, 60 ℃ heating to the spot color is clear, respectively set under the sunlight and uv lamp (365 nm). In the chromatogram of the test product, spots of the same color or yellow fluorescent spots are displayed in the corresponding positions of the chromatogram of the control product.


Processing: bupleurum: remove impurities and residual stem, wash, moisten, cut thick slice, dry.

Vinegar chaihu: take chaihu slices, according to vinegar stir-fry method.

Sexual taste: bitter, slightly cold.

Classics: liver and gallbladder.


Function and function: 
Open the inside and outside, cleanse the liver, and raise the sun. Used for cold fever, cold and hot flow, chest swelling pain, irregular menstruation, prolapse of ziguan, rectocele.


Usage and dosage:

3 ~ 9 g.
Pay attention to the big leaf radix bupleuri BupleurumlongiradiatumTurcz. Dried roots, the surface densely link, toxic, not as a radix bupleuri.

Storage: ventilated and dry place, moth-proof.


Remark:

(1) the treatment of cold and often kudzu root, qiang work with the same. Bupleurum chinense has a better antipyretic effect, evil in shaoyang, cold and hot intercourse, often with scutellaria baicalensis root, pinellia pinellia (such as small bupleurum soup); For malaria, bupleurum chinense can be used in combination with grass fruit and green skin. Bupleurum bupleurum not only has good function of soothing liver and relieving depression, but also is the guide of various medicines for soothing liver. Chest and rib pain can be applied whether internal liver depression or external injury. Where see liver qi yu knot caused by irregular menstruation or dysmenorrhea, and can be used with angelica, white peony root, xiangfu, turmeric and other drugs. Bupleurum medicinal properties rise float, with codonopsis, astragalus and other qi tonic drugs, qi deficiency depression of the long diarrhea prolapse of the anus, prolapse of the uterus and other diseases, there is a Yang qi function.

(2) bupleurum bupleurum is a medicine with the characteristics of qingsheng powder and catharsis. Can not only through the table antipyretic, relieve liver depression, but also can be used to lift Yang qi. Therefore, it can be used both in clinical practice, and also can be used in the virtual disease of the drug. Due to the compatibility of different and can play its various effects, such as: with kudzu root, qiang work, then sweat solution table; Combined with scutellaria baicalensis and artemisia annua, the heat was diffused through the surface. With changshan, grass fruit, malaria paracetamol; With cymbidium, yujin, then qinggan jiyu; With codonopsis pilosula, astragalus, atractylodes, cohosh, etc., then rise Yang qi. But Yin deficient jin and liver Yang hyperactivity should not be used. Bupleurum and pueraria root, qingqing sheng powder function is similar, so it is often used together in the solution of antipyretic. But each has its own specialty, bupleurum bupleurum can soothe the liver and relieve the depression, with qi medicine can raise Yang depression, for uterine prolapse, rectocele, but no shengjin quenching thirst; Pueraria root has the function of producing saliva and quenching thirst, can produce qingyang, used for watery diarrhea, but no function of soothing liver and relieving depression.