Introduction of Bai Jie Zi:White Mustard Seed or Semen Sinapis Albae.

TCM Herbalism:Medicinals and Classifications. ✵The article gives records of the herb White Mustard Seed, its English name, Latin name, property and flavor, its botanical source one plant species, ①.Sinapis alba L., with a detailed introduction to the botanical features of this plant species, the growth characteristics, and ecological environment of this plant species, the features of the herb White Mustard Seed, its pharmacological actions, medicinal efficacy, and administration guide.

Semen Sinapis Albae(White Mustard Seed).

White Mustard Seed:herb photo  Pin Yin Name: Bái Jiè Zǐ.
 English Name: White Mustard Seed.
 Latin Name: Semen Sinapis Albae.
 Property and flavor: warm, pungent.

 Brief introduction: The herb Semen Sinapis Albae is the ripe seed of Brassica alba(L.) Boiss.(family Cruciferae), used to warm the lung and resolve phlegm for treating a cough with profuse expectoration and stuffy feeling in the chest, and also for treating the cold abscess and pleural fluid retention. The herb is commonly known as Semen Sinapis Albae, White Mustard Seed, Bái Jiè Zǐ.

 Botanical source: The herb Semen Sinapis Albae(White Mustard Seed) is the ripe seed of Brassica alba(L.) Boiss., it is a plant of Sinapis L. genus, the Cruciferae family of the Rhoeadales order.

 Herbal classic book defined the herb Semen Sinapis Albae(White Mustard Seed) as the ripe seed of:(1). Sinapis alba L., This commonly used species is introduced as:

(1).Sinapis alba L.

 Sinapis alba L.:flowers  Botanical description: Annual or biennial, 40~120 cm tall. Stem erect, longitudinally branched, upper part much-branched, scattered with white stiff hairs. Leaves alternate. Thin, stipitate; Leaf blade large head at the base of stem lobed or sublobed, broadly elliptic or ovoid, 6~15 cm long, 2~3 cm wide, apex lobes large. Lateral lobes 1~3 pairs, margin sparsely toothed; Cauline leaves smaller, with short stipitate, ascending lobes fewer. Racemes terminal or axillary; 4 small sepals, green, erect, lanceolate or oblong. Base clawed; 4 stamens, 4 long, 2 short, long stamens 8.5~9.5 mm, short stamens 6~6.5 mm. 1 pistil, ovary long columnar, 9~10 mm long, densely covered with white tufts. Sinew cylindric 2~2.5 cm long, densely covered with white stiff bristles, fruit petals constricted between seeds into rosary beads, sinew apex with a flattened sword-shaped beak. Seeds subglobose, yellowish. Its flowering period is from April to June, fruiting from May to July.

 Sinapis alba L.:flowering plant Ecological environment: the plant is native to Europe. It also grows in the lower reaches area of the Yangtze River, the northwest, southwest areas of China.

 Growth characteristics: Sandy loam with good drainage is preferred.

 Characters of herbs: Seeds are subglobose, 2~2.5 mm in diameter. The surface is light yellowish white and smooth. When it is observed under a magnifying glass, there is a slight reticulated pattern, one end has a round light brown navel, which swells in water. When the seed coat is removed, there are two thick cotyledons, which are oily and folded longitudinally with a radicle enclosed in it. The seed has slight smell, tastes spicy and pungent, it has special pungent odor after crushing and wetting. The herb which grain is big, full, yellow and white, and pure is better.

 Pharmacological actions: ①.antibacterial effect:The benzyl isothiocyanate contained in the Semen Sinapis Albae has a broad-spectrum antibacterial effect on yeast, 20 kinds of fungi, and dozens of other strains. The effective antibacterial concentration against gram-negative or gram-positive bacteria is 1:10(2)-3×10(2). The aqueous extract of white mustard seed has a different degree of antifungal effect to Achorion violaceum and Achorion schoenleinii in a test tube. Sialbin hydrolyzes to produce glucosinolates which also have bactericidal action; ②.stimulation effect; ③.anti-lipid peroxidation, expectorant, regulating blood pressure effect.

 Medicinal efficacy: Benefit Qi and reduce phlegm, warm the middle and dissipate cold, free channel and analgesia, indicated for the treatment of cold phlegm and asthma cough, chest fullness and pain in hypochondria, phlegm stagnation meridians, joint numbness, etc.

 Administration of Semen Sinapis Albae(Bái Jiè Zǐ): 
Reference: Administration Guide of Semen Sinapis Albae(Bái Jiè Zǐ)
TCM Books: ①.1~3 qian(about 3~9 grams);②.3~10 grams, water decoction; prepare to finely ground herb powder and prepared to pills, powder.Externally:proper amount, prepare to finely ground herb powder and apply stick.

expectorants,herbs for resolving cold-phlegm.

 Introduction: Expectorants,herbs for resolving cold-phlegm: an agent or substance herbs warm in property, used in treating disorders of cold-phlegm or phlegm-dampness.
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