How to distinguish the true and false of ass hide glue

The authenticity of ass hide glue can be comprehensively judged by its appearance, smell, texture, solubility and price. Authentic ass hide glue is brown black to black black in color, with smooth section without bubbles, slight soybean oil fragrance, hard and brittle texture, no impurities after hot water dissolution, and generally high price.

1. Appearance Identification

The surface of genuine ass hide glue is flat and smooth, the edge is translucent amber, and it shows dark red luster under light. Poor quality products have a grayish white or burnt black color, rough edges with cracks, and some adulterated products show obvious graininess. The surface of the ass hide glue block made by traditional technology has dense cloth impression, while the mechanically pressed fake goods have rigid and even texture.

2. Smell discrimination

The real ass hide glue has a unique gum flavor mixed with soybean oil smell, which emits a faint fishy sweet taste after heating. Fake products may have a pungent fishy odor, chemical agent odor, or be completely tasteless. Some fake products mixed with gelatin will emit rancidity, and the smell of fake products added with essence is too strong and unnatural.

3. Texture test

The genuine ass hide glue is hard and brittle, with clear and crisp knocking sound and smooth section. When broken by hand, it has sharp edges and is not easily deformed. Fake and inferior products have a soft or hard texture, with visible pores or white stubble on the cross section. Some counterfeit products mixed with starch may have powder falling off when broken.

4. Dissolution experiment

Put a small amount of ass hide glue fragments into hot water, the authentic product will gradually dissolve into clear glue, and then it will be re condensed into frozen after cooling. Counterfeit products may exhibit flocculent precipitation, layering, or complete insolubility. The pseudo product mixed with pigskin glue dissolves abnormally quickly, while the solution with added gelatin has a lower viscosity.

5. Price Comparison

Due to the scarcity of raw materials and complex process, the price of authentic donkey hide ass hide glue hide is usually more than 1000 yuan per kilogram. Products with a market price below 500 yuan/kg are highly likely to be adulterated. Please note that some merchants falsely advertise and sell horsehide glue and pigskin glue as donkey hide glue at high prices. It is necessary to make a comprehensive judgment based on other characteristics.

When purchasing ass hide glue, it is recommended to choose a regular drugstore or brand store, and ask to check the product test report. Authentic packaging should have clear approval numbers and production batch numbers, and authenticity can be verified through the website of the National Medical Products administration. Daily storage should be placed in a cool and dry place to avoid moisture and deterioration. Before taking it, it is recommended to consult a traditional Chinese medicine practitioner and use it according to the differentiation of constitution. It should be used with caution for those with yin deficiency and excessive fire, and should be suspended during periods of cold and fever. As a traditional tonic, high-quality ass hide glue needs to be taken in an appropriate amount for a long time to show its effect. It is forbidden to blindly pursue quick effects and eat in large quantities.