Zunyi Eucommia ulmoides [Guizhou Zunyi Specialty]

What is Zunyi Eucommia ulmoides? Authentic Guizhou Zunyi specialty: Zunyi Eucommia ulmoides

Content summary:Do you want to know what Zunyi Eucommia ulmoides is? This article is a detailed introduction to the local specialty of Zunyi, Guizhou - Zunyi Eucommia ulmoides. It was compiled by the editorial team of China Specialty Network, who reviewed and collected relevant information on Zunyi Eucommia ulmoides. The full text takes about 14 minutes to read, mainly including the basic introduction of Zunyi Eucommia ulmoides and its nutritional value? What are the product characteristics of Zunyi Eucommia ulmoides? Wait

Basic Introduction of Eucommia ulmoides in Zunyi

Zunyi is one of the main production areas of Eucommia ulmoides in China. There is only one type of Eucommia ulmoides, which is named after its place of origin to distinguish it from other regions. History suggests that Zunyi Eucommia ulmoides was distributed in Chongqing, Sichuan, and was mistakenly called Chuan Eucommia ulmoides. Later, it was officially named Zunyi Eucommia ulmoides

After years of development, statistics show that there are currently over two million Eucommia ulmoides plants in Zunyi County. Among them, the Eucommia ulmoides Forest Farm in Maping Township has 300000 plants and is one of the three major bases of China National Medicinal Materials Corporation. The products of Eucommia ulmoides bark in Zunyi County are produced according to the export requirements of the foreign trade department. Each piece of skin is 33 centimeters long and 6.6 centimeters wide. After removing the outer layer, the skin is dried and dried with water. There are many dried threads, no insects or holes, no rolls, no water stains, and the inner surface has been purple red. The pieces are intact. To export high-quality medicinal herbs. Fenggang, Renhuai, Xishui, Tongzi and other counties purchase 3-5 thousand kilograms of Eucommia ulmoides bark annually. The annual output of the entire region is over 70000 kilograms, with an export volume of about 4000 kilograms

Eucommia bark

Domestic and foreign experts have conducted repeated and detailed research on the components of Eucommia ulmoides, and found that it contains 17 free amino acids such as methionine, methionine, isoleucine, lysine, which are essential for the human body, as well as 15 trace elements such as zinc, copper, magnesium, iron, calcium, phosphorus, and potassium. Eucommia ulmoides has significant effects such as nourishing the liver and kidneys, strengthening muscles and bones, clearing body waste, enhancing cellular metabolism, preventing muscle and bone aging, balancing blood pressure, breaking down cholesterol in the body, reducing body fat, restoring vascular elasticity, diuretic and heat clearing, broad-spectrum antibacterial, stimulating the central nervous system, increasing white blood cell count, and enhancing human immunity

Quality and technical requirements

1. Source

Eucommia ulmoides oliv., a plant in the Eucommia family

2. Site Conditions

Within the production area, the altitude ranges from 800 to 1600 meters; Soil layer thickness ≥ 50cm; The soil texture is yellow brown soil and sandy loam soil; Organic matter content ≥ 1.5%; Soil pH value: 5.5 to 7.5

III. Cultivation Management

1 Nursery breeding: Adopt seedling cultivation or asexual reproduction cultivation

2. Planting: Planting in spring (March) or autumn (November) every year, with a planting density of ≤ 1700 plants/hectare (planting density: 3 × 2m spacing between plants)

3. Fertilization: Apply at least 30kg of farmyard manure per plant annually

4. Tree shape: The main trunk shape

5. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment

IV. Harvesting

Harvesting can only begin after 15 years of planting, and the harvesting time is from late April to early July

Fifth, Processing

1 Process flow: Peeling → Layer by layer overlapping and pressing → Pressing and sweating → Drying → Scraping off rough skin → Grading → Packaging

2. Main technical requirements:

(1) Sweating under pressure: Lay Eucommia ulmoides straight and flat on the floor, place a wooden board, compact it, and cover it with a straw curtain

(2) Sun drying: Observe the changes in the endothelium, wait for it to turn purple brown, take it out and dry it until the moisture content is ≤ 13.0%

Eucommia ulmoides, Chuanduan, elderberry, Luode Da and other medicines can be used together to improve lower back pain in the short term, and long-term use can reduce proteinuria. The mechanism may be related to Eucommia ulmoides promoting adrenal cortex function, increasing hormone levels in the body, and improving glomerular blood flow. It also has an assisting effect on reducing renal hypertension

Morphological features

The crown is round and the tree posture is semi open. The trunk bark is shallow and longitudinally cracked, black brown in color; Perennial branches are brown in color. 1-year-old branches are thick, upright, slanting, reddish brown, and shiny; The pores are large, dense, flat, and elliptical in shape; The base of the bud is raised. The leaves are circular, slightly curled upwards, measuring 8.2 cm in length and 6.7 cm in width, with pointed tips and a circular base; The leaves are dark green and thick; Leaf veins yellow green; The serrated edges of the leaves are round, blunt, shallow, simple, and neat; The petiole is purple red, 2.7 centimeters long, with 1-2 nectaries, round, large, brown. White flowers, 5 petals, round, corolla diameter 4.0 cm. Flowers with stamens higher than the pistil account for 67.7%, while flowers with stamens lower than the pistil account for 32.3%

Quality Features

1 Sensory characteristics: The skin is flat in shape, with a rough outer layer and less skin, appearing grayish brown, and a thickness of ≥ 0.5cm. The silver white adhesive fibers on the cross section are dense, and the inner lining is smooth, appearing purple brown

2. Physical and chemical indicators: pine resin diglucoside ≥ 0.16%, extract ≥ 13.0%

3. Safety requirements: The product safety indicators must meet the relevant national regulations for similar products