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5093929 
Journal Article 
Headspace Solid Phase Microextraction Analysis of Volatile Compounds of the Aerial Parts and Flowers of Plectranthus neochilus Schltr. and Salvia farinacea Benth 
El-Sakhawy, FS; Kassem, HA; El-Gayed, SH; Mostafa, MM 
2018 
Journal of Essential Oil Bearing Plants
ISSN: 0972-060X
EISSN: 0976-5026 
21 
3 
674-686 
English 
WOS:000440601900008 
The composition of the volatile compounds of the aerial parts (leaves and stems) and flowers (inflorescences) of Plectranthus neochilus Schltr. and Salvia farinacea Benth. growing in Egypt was analyzed by headspace solid phase microextraction (HS-SPME) coupled with gas chromatography/mass spectrometry (GC-MS). The analysis revealed that both the aerial parts and flowers of Plectranthus neochilus Schltr. were dominated by sesquiterpene hydrocarbons (79.9% and 63.79%), respectively. Concerning the aerial parts of Plectranthus neochilus Schltr., the major volatile components were allo-aromadendrene (19.35%) and aromadendrene (18.3%) followed by selin-3,7(11)-diene (10.2%), while γ-cadinene (18.56%) and aromadendrene (17.94%) followed by β-myrcene (10.5%) and E-β-ocimene (9.11%) were the major components in the oil of the flowers. On the other hand, the analysis revealed that 1-octen-3-ol (46.51%), 2-hexenal (18.02%), benzaldehyde (8.8%) and aromadendrene (7.24%) were the main components of the aerial parts of Salvia farinacea Benth. Ethyl benzene (24.29%) was identified as the major volatile component in the flowers followed by m-xylene (21.95%), o-xylene (7.9%), α-thujene (7.64%) and α-pinene (6.11%). 
Plectranthus; Salvia; headspace solid phase microextraction; GC-MS; volatile compounds 
• Ethylbenzene
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