Oleoresin refers to the amorphous organic substances obtained from the secretions of animals and plants in nature, such as rosin, amber, shellac, etc. Amorphous semi-solid or solid organic matter mainly derived from plant (secretion). When heated, it becomes soft and melts. It tends to flow under stress. Oleoresin is generally insoluble in water, but soluble in alcohol, ether, ketone and other organic solvents. There are many kinds of these substances, mainly from plants, such as rosin, lacquer, amber and resin; From animals, mainly shellac, which is the secretion of lac insects
