Identification Character identification Cylindrical, slightly curved, 20~30cm long, 3~5mm in diameter, yellowish on the surface, with fine straight lines and lateral root marks; soft, hard to break, cross-section fibrous, small spotted vascular bundles arranged in several rings . Stem cylindrical, twigs slightly square, with branching, length 40 ~ 90cm, diameter 3 ~ 8mm, brown green surface, tender hair, section enlargement as knee-like; crisp, easy to break, section yellow-green. Opposite to life, stalks; leaves more shrinkage, complete oblong oval, obovate or oval-shaped, length 1.5 ~ 7cm, width 0.4 ~ 4cm, both sides are rough. Spikelets slenderly reflexed like barbs. The ovoid ovule is preferably thick and with flowers. Microscopic identification Stem cross section: square. Epidermal cells 1 column, square or oval-shaped, slightly protruding outer wall, non-glandular hair. Cortical parenchyma cells 3 to 5 columns, containing yellow-brown substances; angular corners of the organization. The buckwheat fibers are more developed in the horn and the phloem is narrow. The formation layer is not obvious. The xylem vessels were clustered in quadrangular horns and midribs; wood fibers were found around the ducts. There are two opposite pith vascular bundles near the center of the pith. External tough type. Stem base cross-section xylem wood between the phloem. Leaf cross-section: the upper and lower epidermis were all 1 type of square-shaped cells; the outer ones were non-glandular hair, and the palisade tissue cells were 3 to 4 columns containing calcium oxalate cluster crystals or sand crystals; the sponge tissue was less fine and yellow-brown. Outside the vascular bundle, 4 to 5 were arranged in a discontinuous loop with large parenchyma cells between the bundles. The parenchymal cells in the bundle contained brown substances. There is a thick horny tissue in the epidermis at the main vein, which shows a sudden attack with double peaks. There is also a thick tissue in the lower epidermis, showing an irregular or bulging process. Physical and chemical identification Take this product powder 0.2g, add ethanol 5mL, reflux 10min, filtered. Take 2mL of filtrate, evaporate to dryness, add 1ml of acetic anhydride to dissolve, pour into small test tube, add 1ml of concentrated sulphuric acid along the wall, show brown-red ring (check saponin). Thin layer chromatography to take this product powder 0.22g, plus 75% ethanol 10mL, reflux 20min, filtered. The filtrate plus 5% hydrochloric acid 3ml reflux 15min, cooling, with 3% sodium hydroxide solution was adjusted to neutral, extracted with chloroform, concentrated to a suitable amount for the test solution. Another oleanolic acid was used as a reference substance, which was spotted on the same silica gel G-0.6% CMC thin-layered plate, developed with ether-n-hexane (2:1) 11 cm, and sprayed with 25% phosphomolybdic acid ethanol solution at 105 °C bake 5 ~ 10min, for the test liquid chromatography in the corresponding position with the reference substance chromatography, the same color spots. Pollock Fillet,Petite Hake Fillets,Filleting Hake,Cape Hake Fillets ZHEJIANG EVERNEW SEAFOOD CO.,LTD , https://www.evernewseafood.com