Soybean meal adulteration identification method

First, the adulteration of soybean meal The main adulteration of soybean meal identification is: corn flour, corn germ meal, bean cake broken identification methods are as follows: 1, mixed with corn powder check to take iodine 0.3g, potassium iodide 1g dissolved in 100ml of water, and then use a straw to drop 1 Drip the water on the glass slide, use a glass head to dip a 20-mesh pod, and lay it in water on a slide glass. Then add 1 drop of iodine-potassium iodide solution and observe under a microscope. The standard sample of pure soybean meal can clearly see brown particles of different sizes. The glass slide containing corn flour contains blue particles like cotton. As the content of corn flour increases, the blue particles increase and the brown particles decrease. The standard sample was prepared by taking 0.95 g, 0.96 g, 0.97 g, 0.98, and 0.99 g of pure soybean meal passed through a No. 20 sieve, and sequentially passing through a No. 20 sieve cornmeal 0.05 g, 0.04 g, 0.03 g, 0.02 g, and 0.01 g each. Mix, five kinds of standard samples of soybean meal containing 5%, 4%, 3%, 2%, 1% corn flour, according to the above steps to make five standard samples for semi-quantitative comparison observation. 2) Checking the broken bean powder broken bean cake can also be checked with the help of a microscope. Because the processing technology of the bean cake and the bean cake is different, the state of the microscope is not the same, the shape of the bean paste is irregular, generally hard and brittle, and the cotyledon particles are not Glossy, opaque, creamy or yellow-colored, cotyledons of coppice pods are squeezed into clumps. This granular clump has a rough texture and is dark and light outside. The senses of the two can also be roughly classified. The pods are generally fragmented, and the lobster cakes are lumps and darker than the pods. Second, the identification of adulterated bean cake broken, adulterated bean cake, is currently limited to corn flour, the specific inspection method can be seen in the soybean meal mixed with corn powder inspection. Third, the adulterated rapeseed meal identification, rapeseed meal adulterated adulterated with as much as possible low raw materials, but heavier, such as soil, sand and other. Specific inspection methods are as follows: 1, sensory inspection of the normal rapeseed meal is yellow or light brown, with a strong oil flavor, this oil flavor is more special, other raw materials do not have. At the same time rapeseed meal has a certain degree of luster, when the hand is used, there is a loose feeling. The adulterated rapeseed oyster sauce has a light fragrance, and its color is also dull and non-greasy. When it is caught by hand, it feels heavy. 2. Check the normal rapeseed meal with hydrochloric acid. Add an appropriate amount of 10% hydrochloric acid. No bubbles are generated. If adulterated rapeseed meal is added with 10% hydrochloric acid, there will be a large number of bubbles. 3. Inspection of Crude Protein The crude protein content of normal rapeseed meal is generally more than 36%, while the crude protein content of adulterated rapeseed is low. 4. The proportion of carbon tetrachloride for carbon tetrachloride is 1.59. The proportion of carbon tetrachloride in rapeseed is small, so the rapeseed can float on the surface of carbon tetrachloride. The method is: take a pear-shaped separatory funnel or In a small beaker, add 5-10 g of rapeseed meal, add 100 ml of carbon tetrachloride to the surface, stir it with a glass rod, and let stand for 10-20 minutes. The rapeseed meal should float on the surface of carbon tetrachloride, and the ore, Due to the large proportion of mud, etc., it sinks to the bottom. The sinking sediment is separated and placed in a weighing bottle of known weight. The weighing bottle is then placed in an oven at 110° C. for 15 minutes, taken out and placed in a desiccator, cooled, weighed, and calculated. The coarse earth and sand content of normal rapeseed meal is less than 1% of earth and sand, while the adulterated rapeseed contains more than 5%-15% of earth and sand. 5, Ash content Check the normal ash content of rapeseed meal ≤ 13%, while adulterated rapeseed ash content of up to 16%.

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Lovastatin Tablet 40mg 12'sx1blister/Box
Nitroglycerine Aerosol  14g 200dose 1vial/Box
Simvastatin Film-coate Tab. 10mg; 20mg 10x10`s/Box
Tirofiban Injection 12.5mg/50ml 1`s/Box
Valsantan Tablet 80mg 10x10`s/Box

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