Solvent extraction method can be divided into the impregnation method, diacolation method, reflux extraction and soxhlet extraction method according to the operation mode,

Before extracting, these methods must crush the pepper into powder, high operation cost.
In addition, the residue after extracting also remain much pigment, the product has high content of impurities, refined cost is expensive, poor availability of residue.

Henan huatai improved the equipment according to the disadvantages of solvent extraction method , developed a processing scheme of high efficiency, high extraction efficiency, low rate of residual rate and low cost, has already been used in many places, obtaining the customers high praise