Tissue-specifc chemical profling and quantitative analysis of bioactive components of Cinnamomum cassia by combining laser-microdissection with UPLC-Q/TOF–MS

Cinnamomi Cortex, the dried stem bark of Cinnamomum cassia Presl (Rougui in Chinese) has been widely used in traditional Chinese medicine, cooking and perfumery for thousands of years. Traditionally, the Cinnamomi Cortex of thick size is considered to be of good quality; however, there is no scientific data to support this point.