Identification of precious medicinal material aloe and its inferior and fake products

The price of aloe is one of the precious Chinese herbal medicines From Aquilaria sinensis (Lour.) gilg and Aquilaria aqallocha Roxb In order to remove the resin free sapwood and decayed part, there are chipping marks left during harvesting and processing, which are concave and convex and porous However, the white wood and decayed wood containing non resin can still be seen through careful observation The products are divided into imported products and domestic products, which are mainly produced in Indonesia, Malaysia, Vietnam and other countries, and domestic products are mainly produced in Guangdong and other provinces In recent years, due to the serious shortage of resources, the lack of supply of medicinal materials, and the rising price, illegal elements take the opportunity to sell the prices of fake and inferior aloe, which leads to the full market of fake and inferior products Even some large pharmaceutical markets, pharmaceutical companies and medical units also have the prices of fake and inferior aloe, which seriously affects the curative effect For this reason, the price of aloe and the identification points of its fake and inferior products are recorded in order to get the original 1 Price of medicine aloe 1.1 price of imported aloe: cylindrical or irregular rod, with obvious longitudinal texture, usually about 10cm long and 2-4cm wide, with knife splitting or cutting marks on both ends and surface The surface is light yellow or grayish black, oily, densely dotted with intermittent brown black fine longitudinal lines (including resin part), and sometimes brown black resin stains can be seen, and fine brown black spots can be seen on the cross section, with luster It is hard and heavy, and can sink or semi sink water The smell is strong and bitter Burning oil exudation, smoke, smoke fragrance, flame resistance 1.2 price of domestic aloe: in the form of irregular pieces, sticks or helmets Generally, it is about 10-30cm long and 5-8cm wide, some of which are small pieces The surface is uneven, with machined knife marks and occasional holes It can be seen that the black brown resin containing part alternates with the yellow white resin free part The surface of holes and pits is mostly rotten The texture is relatively solid and the fracture section is spiny The smell is strong and bitter Most do not sink in water, light weight The burning oil seeps out slightly, with thick smoke, smoke fragrance and flame resistance 2 Price of fake aloe 2.1 price of non conventional aloe: the price of aloe contains resin roots It is irregular and twisted, round, oblate or conical, with root bark occasionally The surface longitudinal lines are twisted, raised or sunken, which are difficult to split longitudinally, brown, taupe or blackbrown Solid quality, weight, weak bitterness, slightly bitter taste The price of domestic aloe for combustion test 2.2 price of inferior aloe: it is the sapwood and waste material without resin in the price of Daphne odora Most of them are irregular lamellae, massive or helmet shaped, with different sizes, some with bark The chisel marks are obvious and often account for more than 1 / 2 of the surface area The longitudinal length is generally no more than 10cm There are often sewage impregnation marks The surface is light yellow or light white, without black resin, without bitter aroma, light and rotten The taste is light but not bitter, and the bitter ones are mostly soaked by Melia azedarach price juice (suspected), without the bitter fragrance of aloe price When burning, there is little oil exudation, no smoke, the smoke is not fragrant, choking, with the smell of general wood combustion, not flame-retardant 2.3 price of fake aloe: it is made of iron wood or mahogany or common wood Most of them are about 5 cm in length and 0.5-1.5 cm in width The surface is brown black or brown, with uniform color and fine texture It is solid in quality, and the air is light and tasteless There are also soak machine oil substances, with the smell of oil, bitter taste Combustion test, no smoke and bitter aroma, or smoke rolling, flying black carbon smoke, diffuse oil smell Common wood impregnated person, often have sewage impregnation mark 3 To identify the key points of making fake and inferior aloe incense, we should pay more attention to the chisel mark, submergence or semi submergence, surface color and the place where there is thick smoke in combustion However, as long as we understand the real source of chisel mark and the reason for the formation of surface color, it is not difficult to distinguish the true and false of the smoke and fragrance after combustion The chisel marks are left to remove the resin free and decayed parts They are mostly concave and convex, with holes However, the white wood and rotten wood with non resin can still be seen through careful observation The forger chiseled the wood which was originally white wood or rotten wood The surface color of aloe is naturally formed, and the brown black stripes are resin formed, with different shades Burning test, the price of heavy smoke has a special bitter aroma, smoke into the line, no black smoke If it is soaked with other oils, there is a disgusting smell when it is burned The smoke is rolling, and the smoke is scattered There is black carbon dust falling, and the smell of engine oil is diffuse If we master these points, we can distinguish the true from the false.