Analysis of lipophilic compounds of tea coated on the surface of clay teapots

The surface of a clay teapot tends to be coated with a waterproof film after constant use for tea preparation. The waterproof films of two kinds of teapots (zisha and zhuni) used for preparing oolong tea and old oolong tea were extracted and subjected to gas chromatographyemass spectrometry analysis. The results showed that comparable constituents were detected in these films; they were primari…