What are the traditional extraction methods of natural products?

These methods include distillation, purification and liquid separation.

Distillation is a thermodynamic separation process, which uses the different boiling points of components in mixed liquid or liquid-solid system to evaporate the low-boiling components and then condense them to separate all the components. It is a combination of evaporation and condensation.

Purification refers to separating impurities from the mixture to improve its purity. As an important chemical method, purification plays an important role not only in chemical research, but also in chemical production.

Liquid separation is an operation method to separate two immiscible liquids. The instrument used for liquid separation is a liquid separation funnel. In addition, liquid separation needs the help of beaker and iron frame. Liquid separation is an operation method to separate two immiscible liquids.