Harvesting and Processing:
Huang Jing, also known as Polygonatum sibiricum, is typically cultivated for 1 to 2 years when propagated through rhizome transplantation, or for 3 to 4 years when grown from seeds. The optimal time for harvesting is at the end of autumn or the beginning of spring. After excavation, the rhizomes are thoroughly washed to remove soil, fibrous roots, and any diseased parts. They are then steamed for 10 to 20 minutes to ensure even cooking and enhance their medicinal properties. Once steamed, the rhizomes are dried while being kneaded to prevent cracking. This drying process usually takes 7 to 10 days, until the material becomes fully dry and ready for use.
Medical Functions:
Huang Jing has a sweet and neutral taste, and it primarily affects the spleen, lung, and kidney meridians. It helps strengthen the spleen and lungs, nourishes yin, promotes the production of body fluids, and boosts qi. It is used in traditional Chinese medicine to treat conditions such as false cold and fever, phlegm in the lungs, hemoptysis (coughing up blood), tuberculosis, cough, diabetes, hypertension, digestive issues, weak bones, and rheumatic pain. Additionally, Huang Jing is known to enhance immune function, exhibit antibacterial effects, promote anti-aging, improve skin health, and increase vitality.
Examples of TCM Prescriptions:
(1) For treating hemoptysis due to tuberculosis: Take 500 grams of Huang Jing, 250 grams each of Angelica sinensis and Polygonatum, and 200 grams of Paeonia lactiflora. Mix all ingredients into a fine powder, combine with honey to make pills, and take three times daily, 15 grams each time.
(2) For angina pectoris caused by coronary heart disease: Use 25 grams each of Cymbopogon, Boziren (Semen Ziziphi Spinosae), Calamus, and Curcuma, 15 grams each of Corydalis and Hawthorn, 40 grams of Jiancheng ointment. Take one dose per day, for a total of three doses over four weeks as a treatment course.
(3) For dry cough: Combine 25 grams of Huang Jing, 20 grams of Adenophora, apricot kernels, mulberry leaves, and Ophiopogon japonicus, each at 15 grams, and 10 grams of raw licorice. Prepare by decocting in water.
(4) For whooping cough: Use 15 grams each of Huang Jing, Asparagus, Ophiopogon japonicus, dried shoots, lily, aster, and Gorgon, along with 5 grams of licorice. Decoct in water for consumption.
These formulations reflect the versatility and therapeutic value of Huang Jing in traditional Chinese medicine, offering both preventive and curative benefits.
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