The efficacy and function of Isatis indigo leaf[picture]

Do you know about Isatis indigotica [picture]? It is a common Chinese medicinal material and is very helpful for some diseases. Let me show you today.

【English name】 FOLIUM ISATIDIS

[Source] This product is the dried leaves of Isatis indigotica Fort. , a plant of the cruciferous family. Harvest 2 to 3 times in summer and autumn, remove impurities and dry in the sun.

[Properties] This product is mostly wrinkled and curled, and some are broken. When the complete leaf is flattened, it is oblong to oblong-oblanceolate, 5-20 cm long and 2-6 cm wide; the upper surface is dark gray-green, and some of them have darker and slightly raised dots; the apex is obtuse, the margin is entire or wavy, and the base is narrow and extends down to the petiole in a wing-shaped manner; the petiole is 4-10 cm long and light brown-yellow. Crisp texture. It has a faint smell and tastes slightly sour, bitter and astringent.

【Identification】 (1) The powder of this product is green-brown. The antipodal wall of the lower epidermal cells is slightly curved and slightly beaded and thickened; the stomata are unequal, and there are 3 to 4 accessory cells. There is no obvious distinction between the palisade tissue and spongy tissue in the mesophyll section.

[Content Determination] Take about 1g of crude powder of this product [at the same time, take another powder of this product to determine the moisture content (Appendix Ⅸ H Method 1)], accurately weigh, place in a Soxhlet extractor, add 100ml of chloroform, heat and reflux for 6 hours, concentrate the extract to an appropriate amount, transfer to a 25ml volumetric flask, add chloroform to the scale, shake well, and use as the test solution. Take an appropriate amount of indigo red reference substance, weigh it accurately, and add chloroform to make a solution containing 0.07 mg per 1 ml as the reference substance solution. According to the thin layer chromatography method (Appendix Ⅵ B) test, accurately pipette 10μl or 15μl of the test solution and 4μl and 18μl of the reference solution, respectively, and cross-point them on the same silica gel G thin layer plate. Use benzene-chloroform-acetone (5:4:1) as the developing agent, develop, take out, dry, cover the thin layer plate with a glass plate of the same size, fix it with tape around it, and scan according to the thin layer chromatography method (Appendix Ⅵ B Thin Layer Scanning Method) at wavelengths: λ=540nm, λ=700nm. Measure the integral value of the absorbance of the test sample and the integral value of the absorbance of the reference, and calculate to obtain the result.

[Processing] Remove impurities, wash briefly, chop and dry.

【Nature and flavor】 Bitter, cold.

[return through meridians] return to the heart and stomach meridians.

【Functions and indications】 Clears away heat and detoxifies, cools blood and eliminates freckles. It is used for pathogenic heat invading the blood, high fever and coma, rashes and eruptions, jaundice, febrile dysentery, mumps, throat congestion, erysipelas, and carbuncles.

【Usage and Dosage】 9-15g.

【Storage】Place in ventilated and dry place to prevent mildew.

【Excerpt】 Chinese Pharmacopoeia

【Source】 "Tang Materia Medica"

From the above explanation, we have some understanding of the effects and functions of Isatis indigotica [picture]. If you have any discomfort in your body, you can use Chinese medicine to regulate it. Chinese medicine has a long history of treating diseases, so you can eat it with confidence.