TCM Introduction

   Secondary metabolites depending on growing circumstances
usually are active constituents of CTM. As a
result, a CTM may have variable chemical components
and contents according to the different soils and climates
that growing in as well as growth stages when being
harvested [1]. It is absolutely necessary to develop analytic
methods of CTM for quality control. Among all the
quality control systems, fingerprint has gained more and
more attention recently after it is applied widely in quality
control of CTM [2]. Fingerprint is a kind of method
to show chemical information of medicines with chromatograms,
spectrograms and other graphs by chemical
analytical techniques. The major feature of fingerprints is
commonness of the same kind of medicine from different
collections.