Why is water extraction mostly done by decoction instead of reflux extraction?

The reflux extraction method is mostly a method of extracting active ingredients with organic solvents. If the extracted ingredients are soluble in water or hot water, the decoction method can be used directly. Water extraction does not need to consider the evaporation of water, which is different with organic solvents (for example

For example, if the decoction method is used to extract components soluble in ethanol, the ethanol will evaporate before the water, and the active ingredients cannot be extracted, so the organic solvent is refluxed). Of course, the reflux method is also possible, but it is superfluous, so water

It is generally easier to extract by decoction.