| Abstract
| - Pistaciapalaestina Boiss. (Pistacia terebinthus L. var. palaestina (Boiss.) Engl.) is a medicinal andfoodstuff plant. The ripe fruits are used largely in the Middle East as a component of the so-calledZaatar, a mix of aromatic and food plants. Results of GC and GC−MS analyses of the essential oilsof leaves, galls produced by Baizongia pistaciae (L.), and ripe and unripe fruits of Pistacia palaestinaBoiss. collected in Jordan are reported. Both qualitative and quantitative differences between differentparts of the plant were observed. The oil was rich in monoterpenes, and the main constituents wereα-pinene (63.1%) and myrcene (13.3%) in the leaves and α-pinene (49.4%), sabinene (22.8%), andlimonene (8.1%) in the galls. (E)-Ocimene (33.8−41.3%), sabinene (20.3−24.1%), and (Z)-ocimene(3.8−13.0%) were the main ones in both unripe and ripe fruits. Sesquiterpenes have been detectedin small quantities in leaves and fruits and in trace amounts in galls. Keywords: Pistacia palaestina; essential oil; Zaatar; GC−MS; fruits; leaves; gall; insect; Baizongiapistaciae; monoterpenes
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