Method for determination of schisandra chinensis var.

【Properties】 This product is a round, elliptical or irregular oblique section with a diameter of 1.8~6.5cm. The surface is grayish brown, the cork peel is dark reddish purple, the cork is thicker, the thicker has most cracks, and is cracked. The thin one has a longitudinal groove, often with moss and lichens. Hard and not easy to break. Cross-section of the skin is narrow, reddish-brown, fibrous, wide wood, light brown, ducted, scattered, small pith, dark brown, hollow. It has a special aroma and tastes bitter and awkward. [Identification] (1) The powder of this product is dark red. The intercalated fiber is bundled or scattered, the tip is tapered, the diameter is 21~62μm, the wall is extremely thick, the cell cavity is not obvious, and many small calcium oxalate crystals are embedded in the wall, and some crystal grains protrude from the cell wall surface. The intercalated cells are irregular or long elliptical, 38~92μm in diameter, wall thickness, and the cell cavity is not obvious. Many small forms of calcium oxalate crystals are embedded in the wall. Fiber tracheids are bundled or scattered. The surface of the cork cells is polygonal, the vertical wall is flat and thin; the side view is rectangular. The secretory cells are oval, with large cells and thin wall cell debris. The catheter is a perforated catheter with multiple fractures. The brown pieces are lumpy, brownish red or brown. (2) Take 0.5 g of this product powder, add 10 ml of cyclohexane, sonicate for 30 minutes, filter, and evaporate the filtrate, and dissolve the residue with 0.5 ml of cyclohexane to prepare a test solution. Another reference was made to the isoform of Schisandra chinensis, and a solution containing 1 mg per 1 ml was prepared by adding cyclohexane as a reference solution. According to the thin layer chromatography (Appendix VI B) test, 5 μl of each of the above two solutions were aspirated and spotted on the same silica gel GF254 thin layer plate with petroleum ether (60-90 ° C)-ethyl acetate (2:1). The developing agent was developed, taken out, dried, and placed under an ultraviolet lamp (254 nm) for inspection. In the chromatogram of the test sample, spots of the same color are displayed at positions corresponding to the chromatogram of the reference substance. [Check] Moisture should not exceed 14.0% (Appendix IX H first method). The total ash should not exceed 4.0% (Appendix IX K). [Content determination] Determined by high performance liquid chromatography (Appendix VI D). The chromatographic conditions and system suitability test were carried out using octadecylsilane-bonded silica gel as a filler; methanol-acetonitrile-water (10:48:42) as a mobile phase; the detection wavelength was 230 nm. The number of theoretical plates should be no less than 8000 according to the calculation of the shaped schisandra chinensis. Preparation of the reference solution Take the appropriate amount of the schisandra chinensis saponin reference substance, accurately weighed, add methanol to make a solution containing 30mg per 1ml, that is. The preparation of the test solution is taken from the powder of this product (0.53 sieve), accurately weighed, placed in a conical flask, precisely added cyclohexane 50ml, weighed, ultrasonic treatment (power 360W, frequency 40kHz 50 minutes, let cool, then weighed, use cyclohexane to make up the lost weight, shake, filter, take 25ml of filtrate, evaporate, dissolve with methanol, dilute to 5ml, shake, filter , take the filtrate, that is. The measurement method accurately absorbs 10 μl of each of the reference solution and the test solution, and injects into a liquid chromatograph, and the measurement is obtained. This product is calculated on the basis of dry products, and contains no specific type of Schisandra chinensis (C27H30O8) of not less than 0.030%. [Processing] Remove impurities, cut thick slices, and dry. 【Functions and Indications】 Blood, blood circulation, and collaterals. For blood deficiency, numbness of hands and feet, joint pain, irregular menstruation. Zhengzhou Weier Biotechnology Co., Ltd. is a comprehensive enterprise integrating scientific research, production and sales. The company's business covers biological agents, chemical reagents and chemical raw materials, pre-clinical testing and consumables, elisa kits, antibodies and standards. A variety of biological products such as products and culture media. Complete range, quality is trustworthy, welcome new and old customers to come to inquire! ! !

Customized CAD canister toys can be designed, proofed and produced by professional designers according to the drawing, template and design drawings provided by customers. Provide an impressive and perfect series of CAD canister toys at a reasonable price.

Genuine promises: All our products, quality assurance, please rest assured to purchase orders.
About the delivery date: We have a strong team to serve you, to ensure that customers order the delivery date.
About packing: We use punched plastic bags to prevent children from danger. The material of plastic bags can be provided by customers. We can produce them as required. Cartons, colour boxes and other packages can be customized according to customers'requirements.
After-sale service:If there are any quality problems in our products, we can unconditionally replace them.
The company's products with environmental protection materials, excellent workmanship, all kinds of supporting facilities, advanced technology, perfect management, excellent quality, reasonable price, rapid development, strict confidentiality, complete after-sales service. Only detailed product drawings (or samples) are required to provide customers with one-stop service from development to after-sales service.

Map customization:We have professional designers who can design according to your requirements. You only need to provide pictures of toys (physical objects or floor plans) to customize the products you want.

Custom Cad Can Toy

Custom Cad Can Toy,Quality Cad Can Toy,Cheap Cad Can Toy,Plastic Cad Can Toy

SHEN ZHEN HAO XIAN LONG TECHNOLGY.CO.,LTD , https://www.haoxianlongtoys.com