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The aim of this study was to determine the headspace composition of P. frutescens var. acuta Kudo and to compare the performance of 6 commercially available solid-phase micro extractron (SPME) fibers for detecting volatile flavors from this aromatic plant. A total of 124 volatile compounds, which included hydrocarbons (7.22-28.11％), aldehydes (19.07-50.62％), alcohols (2-6.57％), ketones (1.34-12.61％), esters (3.83-10.5％), oxides and epoxides (0.74-1.26％), acids (0.2-4.32％), phthalides (1.11-11.21％), and trace amounts of miscellaneous compounds (2.06-10.62％), were found in the headspace of P. frutescens var. acuta Kudo. Aldehydes, especially perilla aldehyde (17.61-47.82％), were prominent. The relative concentration capacities of the fibers on the volatile components were different. Polydimethylsiloxane-divinylbenzene (PDMS-DVB) was more effective for headspace analysis of P. frutescens var. acuta Kudo than PDMS, Carboxen-PDMS, Carbowax-DVB, DVB／Carboxen／PDMS and polyacrylate.
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