Encyclopedia of efficacy and functions of mustard seeds

First paragraph: content overview
Mustard seeds, also known as white mustard seeds, are the mature seeds of the cruciferous plant mustard. They have the effects of warming the lungs and resolving phlegm, promoting qi and dissipating stagnation, unblocking collaterals and relieving pain. In the theory of traditional Chinese medicine, mustard seeds are mainly used to treat coughs with cold phlegm, swelling and pain in the chest and hypochondrium, numbness of joints, and gangrene. Modern research shows that mustard seeds contain glucosinolates, which have anti-inflammatory, antibacterial and local blood circulation effects. This article will start from four aspects: traditional application, pharmacological mechanism, usage precautions and dietary value, focusing on analyzing its core effect of resolving phlegm and dissipating stagnation.

Paragraph 2: Application of Traditional Chinese Medicine
In "Compendium of Materia Medica", Li Shizhen recorded that mustard seeds "benefits the nine orifices, unblocks the meridians, and treats vomiting due to cold stomach and cough due to cold lungs." In clinical Chinese medicine, mustard seeds are often ground into powder, and mixed with perilla seeds and radish seeds to form "Sanzi Yangqin Decoction", which is used for the elderly with cough and asthma due to excessive phlegm. For external use, mustard seed powder mixed with vinegar can relieve rheumatic joint pain. Its pungent and warm properties can penetrate the skin and play the role of "acupoint foaming therapy". It is worth noting that people with yin deficiency and excessive fire should use it with caution to avoid aggravating the dryness and heat in the body.

Paragraph 3: Modern pharmacological research
Research has found that mustard seeds containGlucosinolatesAfter enzymatic hydrolysis with water, isothiocyanate is generated, which is the active ingredient that plays its role. Experimental data shows:

active ingredient	function	experimental concentration
Allyl isothiocyanate	Inhibit Staphylococcus aureus	0.5mg/mL
Phenethyl isothiocyanate	Promote tracheal ciliary movement	1.2μg/mL

These ingredients increase bronchial secretion by stimulating mucosal reflexes and achieve the effect of diluting phlegm, which confirms the theory of "spicy and warm to resolve phlegm" in traditional Chinese medicine.

Paragraph 4: Suggestions for daily use
In home health care, mustard seed powder and ginger juice can be mixed and applied externally to the shoulders and neck to improve local circulation (remove after 15 minutes to prevent skin burns). In terms of dietary therapy, grind 3 grams of fried mustard seeds into powder and make porridge with japonica rice. It is suitable for people with excessive phlegm in the morning. But please note:
• Daily oral intake should not exceed 6 grams
• Not suitable for pregnant women and those with skin allergies
• Do not eat together with honey (slight toxic reactions may occur)

Paragraph 5: Summary and extension
As a medicinal and edible material, mustard seeds have both traditional curative effects and modern scientific basis. Its core value lies in its "warming and dredging" properties, which can not only resolve visible phlegm knots, but also clear invisible qi stagnation. It requires syndrome differentiation and treatment when used. It can be combined with other medicinal materials such as pinellia and tangerine peel to enhance the phlegm-reducing effect. It is recommended to use it under the guidance of a physician and avoid using it in large doses alone. With the deepening of research on glucosinolates, its potential value in the field of tumor prevention is also worthy of attention.

Quote sources:
1. "Chinese Materia Medica" Shanghai Science and Technology Press
2. Li Shizhen's "Compendium of Materia Medica" Ming Dynasty
3. National Pharmacopoeia Commission "Pharmacopoeia of the People's Republic of China" 2020 Edition