Propolis features: block or irregular fragments, turquoise, brownish yellow, brownish red, brownish brown or dark brown, with shiny surface or section. It gradually becomes hard and brittle below 20℃, and becomes soft at 20 ~ 40℃, which is sticky and plastic. Aromatic, slightly bitter, slightly astringent, slightly hemp, spicy.

Quality standard of propolis: propolis contains a lot of flavonoids and polyphenols, and its physiological activity is closely related to it, so the content of flavonoids and polyphenols in propolis is an important index to evaluate the quality of propolis.

Generally speaking, low-quality propolis contains less than 1 1%, qualified propolis 1 1% ~ 14%, and excellent propolis 14% ~ 17%. >: 17% is high quality propolis.

Extended data

The origin of propolis: the resin collected by bees from the buds, bark or trunk of plants, mixed with the secretion of frontal glands, beeswax and a small amount of pollen, is a colloid mixture with aromatic smell.

Propolis ingredients: Propolis contains a variety of chemical ingredients, mainly flavonoids, acids, alcohols, phenols, ketones, ethers, olefins, hydrocarbons, terpenoids, fatty acids, steroids, various amino acids, enzymes, polysaccharides and vitamins.

In addition, it also contains carbon, hydrogen, oxygen, nitrogen, calcium, phosphorus, chlorine, sodium, magnesium, silicon sulfide, iron, manganese, iron, copper, keys, zinc, fluorine, tin, arsenic, selenium, milling, chromium, nickel, barium, zirconium, antimony, copper, silver, lead and other elements.

Baidu encyclopedia-propolis capsule

Baidu encyclopedia-propolis