Identification of Gangsong
Character identification This product is a leaf with a few short shoots. Twigs 5-10mm long, with opposite leaves. Leaves linear or linearly conical, all yellow-green, glabrous, 5-10 mm long, less than 1 mm wide, entire, apex pointed, base tapering, leaf surface grooved, abaxial surface convex, lateral veins inconspicuous, veiled The oil point is sessile or short-handled. The gas is slightly fragrant, bitter and astringent. Those who smell incense and color green are preferred. Microscopic identification Leaf surface view: the upper epidermal cells are golden-angled or round-shaped, the vertical wall is flat, the grid is more than 4.5-6.5, the pores are quite numerous, and the infinitive type is 20-23 μm long and 18-20 μm in diameter. Below the skin, the skin surface ratio is not uniform from 4.2 to 5.5. The other special features are the same as the upper one. Leaves cross-sectional view: epidermal cells are square to rectangular, outside the thick cuticle, epidermis cells inside the large oil cells, diameter 30-100μm. Most of the mesophyll tissues are differentiated into palisade tissue. The cells are in 2-3 rows and penetrate through the upper and lower sides of the main vein. Sponge tissue only contains a few cells. The major vascular bundles are externally flexible and xylem undeveloped, with only a few small ducts and phloem stenosis. Vascular bundles have 2-4 rows of medium garlic fibers. The fibrous parenchyma cells contain calcium oxalate clusters with a diameter of 13-25 μm. Physical and chemical identification Thin layer chromatography: Take 1g of the product, pulverize, add ether 5ml, cool soak for 30min, and filter. Take the filtrate spot. Β-pinene was used as a control. Spot on silica gel H crucible, using petroleum ether (60-90°C)-hexanoic acid ester (5:1) as the developing agent, with a span of 10cm. With 2% potassium permanganate deep liquid color, the sample and the reference chromatogram at the corresponding position showed yellow spots. Lock Core,Padlock Core,Door Lock Core,Zinc Alloy Lock Core ZHEJIANG ZHONGZHENG LOCK INDUSTRY CO.,LTD , https://www.zhongzhengcabinetlock.com