I think its main methods are: ① first crude chili oil resin for water vapor distillation, remove chili odor, and then treated with alkaline water, organic solvent extraction, distillation to get paprika pigment; or first alkaline water treatment of chili oil resin, and then extracted with solvents, concentration, adding the same method of oil solubilization of edible oils, and then steam distillation in order to remove the odor. ② Add fatty alcohols and alkaline substances such as methanol - sodium methanol, ethanol - sodium ethanol, n-propanol - sodium n-propanol, isopropanol - sodium isopropanol, sodium butanol - sodium butanol, etc. to the chili oil resin, and through the alkaline substances of these Through the catalytic effect of these alkaline substances, promote the fatty components in the resin of chili oil ester exchange reaction, and then distillation of excess alcohol, and then leave the pepper residue in water or brine, adjusted to neutral with acid, layering, oil layer by adding a non-polar or low-polar solvents such as n-hexane, petroleum ether, precipitation of solids, filtration of capsaicinoids, capsaicinoids produced by the method of superior quality and no odor. ③ first 15% ~ 40% of NaOH (or KOH) solution treatment of chili oil resin, so that the fat component of capsaicin saponification reaction, and then organic solvents such as acetone for extraction and concentration, and then steam distillation or inert gas under reduced pressure can be obtained under inert gas treatment without odor capsaicin. The capsaicin produced by this method has high yield and good quality, and the production is safe and simple. ④ The method is to 20% of the alkaline metalization treatment of chili oil resin, and then add an appropriate amount of alkaline earth metal compounds, so that the formation of an aqueous system, the aqueous system to dilute acid treatment at room temperature, the formation of salt filtration, separation of solids, washing, and then extracted with organic solvents, concentrated under reduced pressure can be obtained chili rosin, the product obtained by the texture of the good quality and odorless.