Although that represented an outstanding and epochal work in the industrialization of biotechnology, unfortunately the plant cell culture technique has not become the tide in the manufacture of natural products till the present day. In most cases,plant cell culture is incapable of producing the secondary plant metabolites, to which most of the useful components belong. Micropropagation and root culture techniques have been used for real commercial products.
In addition, biotransformation technique may offer a promising prospect for production in large amounts.