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Thymol and carvacrol production from leaves of wild Palestinian Majorana syriaca.
Bioresour Technol. 2008 Jun; 99(9):3914-8.BT

Abstract

Majorana syriaca (Zaatar in Arabic), belonging to the mint family, Labiates, is cultivated widely and grows wild in the mountains of Palestine between the months April to August. In order to determine the secondary metabolites from wild leaves of Palestinian M. syriaca, comparative analysis by static headspace (HS) and steam distillation (SD) GC-MS was used. Among the samples examined, the major constituents identified varied greatly throughout the different harvesting periods. Headspace revealed major volatiles and semi-volatiles of alpha-pinene, beta-myrecene, o-cymene, p-cymene, gamma-terpinene, thymol, and carvacrol. We found that the most abundant monoterpenes, i.e. gamma-terpinene and p-cymene were decreased in the month of May since they are the biogenetic precursors (via enzymic hydroxylation) of the phenolic terpenes, thymol and carvacrol. The harvesting time, location and the thyme type (i.e., wild) affects the yield of essential oils as reflected by normal steam distillation.

Authors+Show Affiliations

Chemistry and Chemical Technology Department, Al-Quds University, PO Box 20002, Abu-Deis, Palestine.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17826989

Citation

Abu-Lafi, Saleh, et al. "Thymol and Carvacrol Production From Leaves of Wild Palestinian Majorana Syriaca." Bioresource Technology, vol. 99, no. 9, 2008, pp. 3914-8.
Abu-Lafi S, Odeh I, Dewik H, et al. Thymol and carvacrol production from leaves of wild Palestinian Majorana syriaca. Bioresour Technol. 2008;99(9):3914-8.
Abu-Lafi, S., Odeh, I., Dewik, H., Qabajah, M., Hanus, L. O., & Dembitsky, V. M. (2008). Thymol and carvacrol production from leaves of wild Palestinian Majorana syriaca. Bioresource Technology, 99(9), 3914-8.
Abu-Lafi S, et al. Thymol and Carvacrol Production From Leaves of Wild Palestinian Majorana Syriaca. Bioresour Technol. 2008;99(9):3914-8. PubMed PMID: 17826989.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Thymol and carvacrol production from leaves of wild Palestinian Majorana syriaca. AU - Abu-Lafi,Saleh, AU - Odeh,Imad, AU - Dewik,Hasan, AU - Qabajah,Mohammed, AU - Hanus,L O, AU - Dembitsky,V M, Y1 - 2007/09/10/ PY - 2006/12/05/received PY - 2007/05/20/revised PY - 2007/07/23/accepted PY - 2007/9/11/pubmed PY - 2008/5/22/medline PY - 2007/9/11/entrez SP - 3914 EP - 8 JF - Bioresource technology JO - Bioresour Technol VL - 99 IS - 9 N2 - Majorana syriaca (Zaatar in Arabic), belonging to the mint family, Labiates, is cultivated widely and grows wild in the mountains of Palestine between the months April to August. In order to determine the secondary metabolites from wild leaves of Palestinian M. syriaca, comparative analysis by static headspace (HS) and steam distillation (SD) GC-MS was used. Among the samples examined, the major constituents identified varied greatly throughout the different harvesting periods. Headspace revealed major volatiles and semi-volatiles of alpha-pinene, beta-myrecene, o-cymene, p-cymene, gamma-terpinene, thymol, and carvacrol. We found that the most abundant monoterpenes, i.e. gamma-terpinene and p-cymene were decreased in the month of May since they are the biogenetic precursors (via enzymic hydroxylation) of the phenolic terpenes, thymol and carvacrol. The harvesting time, location and the thyme type (i.e., wild) affects the yield of essential oils as reflected by normal steam distillation. SN - 0960-8524 UR - https://www.unboundmedicine.com/medline/citation/17826989/Thymol_and_carvacrol_production_from_leaves_of_wild_Palestinian_Majorana_syriaca_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(07)00598-6 DB - PRIME DP - Unbound Medicine ER -