Most of the active ingredients present in the herbs in form of natural organic compounds have very complex structure. The process of extraction for a particular compound depends on selection of right extraction solvent media.

The process and the plant design of extraction system depends on product & components and is very difficult to generalize a process. From raw material to isolated compound, a series of processes will be involved. First, the rich compound(s) are extracted with an extraction media. The second stage is purification and isolation by various physical / chemical processes.

The herbal extracts are used as natural dyes for textile, leather, food and cosmetic applications as coloring matters.