Methods/steps of sensory evaluation?
? Natural propolis is an opaque solid. Is the surface smooth or rough? The broken surface is sandy? The cross section is similar to the shape of marble. Is natural propolis generally brown, reddish brown, brown or taupe? Sometimes turquoise? Several of them are almost black. Propolis has a fragrant smell; Slightly bitter? Slightly spicy; Viscosity and plasticity; Sticking teeth when chewing.
Can it be softened by kneading with your hands?
The relative specific gravity is about 1. 127. False propolis generally collects resin directly by hand? An extract obtained by extraction and processing. Pseudopropolis is basically gum. The so-called propolis made entirely or partially from this gum is fake propolis. The production cost of this fake propolis is much lower than that of real propolis? Natural propolis products made from it? The natural cost is much lower. Someone used this product to fight the price war under the banner of propolis? Engage in unfair competition. Really? As long as you know and are familiar with propolis? It is not difficult to identify the authenticity of propolis.
? Price judgment
? False propolis has not found the biological effect of natural propolis on bees. And the raw materials and processing of fake propolis will bring many unsafe factors? It may do harm to consumers. So what? Products made from counterfeit propolis extracts enter the market? Endless harm. This is not only detrimental to the interests of consumers? It will also ruin your job. This requires consumers to carefully choose propolis products? Special attention should be paid to health food products without batch number and products produced by informal enterprises? Don't be greedy for cheap? I was cheated because I thought it was all propolis products anyway. ?
? Taste judgment
? Puncture the capsule, drop the contents into the glass, put the water into the glass and stir, so that the real propolis quickly turns milky white, and the inferior propolis or fake propolis turns dark brown or black; You can also taste it. Real propolis tastes slightly bitter and spicy, while fake propolis doesn't. In terms of smell, true propolis has a natural special fragrance, while inferior propolis or fake propolis has a weak or almost no fragrance. After a small amount of dissolution, chewing gum tastes very heavy, and some even have the taste of chemical essence.
Odor judgment
? Propolis solid particles have an aromatic smell, which is similar to frankincense when burned. The taste is slightly bitter and spicy. When chewing, it will stick to the teeth, and it can be softened by kneading with your hands. It began to soften at 36℃. When its viscosity and plasticity are lower than 15℃, it will become hard and brittle and can be crushed. At 60℃ ~ 70℃, it will melt into a viscous liquid, which can be dissolved by dropping alcohol.