Volatile Constituents of the Fruit Secretory Glands ofZanthoxylum bungeanumMaxim.

Abstract
The volatile constituents of the secretory glands of Zanthoxylum bungeanum Maxim, fruits were directly sampled by means of glass microneedles and investigated by GC and GC/MS. The main compounds of the secretory mixture were β-phellandrene (36.68%), hydroxy-α-sanshool (19.51%), piperitone (9.29%) and β-pinene (9.23%). The composition of the secretory mixture was also compared with that of the essential oils of the fruits obtained by hydrodistillation.