Contents 1 Pinyin 2 English reference 3 Overview 4 Latin name 5 English name 6 Alias ??of Huang Yaozi 7 Source 8 Original plant form 9 Origin 10 Harvesting and initial processing 11 Crude drug properties 12 Meridian tropism of nature and flavor 13 Characteristics of Huangyaozi Efficacy and Indications 14 Chemical composition of Huangyaozi 15 Pharmacological effects of Huangyaozi 16 References attached: 1 Prescriptions using the Chinese medicine Huangyaozi 2 Chinese patent medicines using the Chinese medicine Huangyaozi 3 Huangyaozi in ancient books 1 Pinyin

huáng yào zǐ 2 English reference

airpotato yam [Xiangya Medical Professional Dictionary]

airpotato yam tuber [Xiangya Medical Professional Dictionary]

Rhizoma Dioscoreae Bulbiferae (拉) [ Chinese Medicine Terminology Approval Committee. Traditional Chinese Medicine Terminology (2004)]

air potato [Traditional Chinese Medicine Terminology Approval Committee. Traditional Chinese Medicine Terminology (2004)]

3 Overview

Huangyaozi is the name of a traditional Chinese medicine, published in "Ben Cao Tu Jing". It is the tuber of the Dioscorea bulbifera L. plant [1]. 4 Latin name

Rhizoma Dioscoreae Bulbiferae (La) ("Terms of Traditional Chinese Medicine (2004)") 5 English name

air potato ("Terms of Traditional Chinese Medicine (2004)")

Air Pootalo Yam Rhizome 6 Alias ??of Huang Yaozi

Huang Duzi, money hanging egg, golden yam.

Xanthate root and xanthate resin[2]. 7 Source

Dioscorea is the tuber of Dioscorea bulbifera L.[1].

Dioscorea bulbifera is the tuber of Dioscorea bulbifera L.[2]. 8 Original plant form

Twining herbaceous vines. Tubers are oval to oblong. The stem is left-handed. The leaves are alternate, broadly heart-shaped and ovate, 7 to 22 cm long, 7 to 18 cm wide, with sharp apex, entire or wavy edges, and purple-brown spherical or oval bulbils of varying sizes in the leaf axils. The flowers are unisexual and dioecious, with drooping spikes; the male flowers are solitary and dense, with 6 tepals and 6 stamens; the female flowers have 6 vestigial stamens, a lower ovary, and 3 cells. The capsule is oblong, recurved, with rounded wings. It is grass yellow when mature and has small purple spots densely covered on the surface. The seeds are flat and oval, borne at the top of each cell of the fruit, and have wings on one side. The flowering period is from July to October, and the fruiting period is from August to November.

Grown along river valleys, valley ditches or edges of mixed woods. 9 Place of Origin

Huangdiazi is mainly produced in Hubei, Hunan, Jiangsu and other places [2]. 10 Harvesting and initial processing

Dig the tubers in autumn, remove the fibrous roots, wash them, slice them and dry them in the sun. 11 Crude drug properties

The transverse slices of the tuber are round or circular, with a diameter of 3 to 10 cm and a thickness of 0.3 to 1.5 cm. The outer skin is thin, brown-black, wrinkled, with many short fine roots and yellow-white or brown-yellow slightly raised fibrous root marks. The cut surface is light yellow to yellow-brown, smooth or granular and uneven. The texture is brittle and the broken surface is granular. The smell is slight and the taste is bitter. 12 Meridian distribution of nature and flavor

Huang Yaozi is bitter in taste, neutral in nature, and slightly toxic; it enters the lung and liver meridians [2]. 13 Efficacy and Indications of Huangyaozi

Clears away heat and detoxifies, cools the blood and relieves galls. Used for sore throat, carbuncle sores, snake and insect bites, goiter, vomiting blood, and hemoptysis.

Huang Yaozi has the effects of reducing swelling and detoxification, relieving cough and asthma, cooling blood and stopping bleeding [2]:

Huang Yaozi can treat galls, scrofula, sore throat, hernia, orchitis , cough, asthma, whooping cough, vomiting blood, hemoptysis, and epistaxis; recently it is also used to treat esophageal cancer, gastric cancer, and breast cancer: decoction, 4.5-9g [2].

Pound Huangyaozi and apply it or grind the juice and apply it to carbuncles, sores and boils, snake and dog bites; grind it into powder and apply it to treat pemphigus[2].

Oral administration of excessive amounts of Huangdiazi can cause nausea, vomiting, salivation, abdominal pain, diarrhea, sweating, palpitations, miosis, convulsions, coma and other poisoning symptoms [2].

People with abnormal liver function should use with caution[2]. 14 The chemical composition of Dioptata

Dioptata contains diterpene ester A (dio*** ulbine A), saponins, tannins and starch.

Dioscorea contains saponins, tannins, Diosgenin (Dio*** ulbin) and diosgenin. It also contains sorbitol, acetophenones, dihydrodioscin, etc. [2]. 15 Pharmacological effects of Huangyaozi

Huangyaozi has certain curative effects on goiter caused by iodine-deficient food [2].

Huang Yaozi tincture and decoction have inhibitory effects on frog hearts, and also show inhibitory effects on isolated rabbit intestines, and have exciting effects on the uteri of unpregnant rabbits and guinea pigs [2].

Huangyaozi decoction has varying degrees of inhibitory effects on common pathogenic skin fungi [2].