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Seasonal variation in yield and chemical composition of Moroccan Thymbra capitata (L.) Cav. essential oil and its corresponding hydrolat extracted essential oil


 
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1. Title Title of document Seasonal variation in yield and chemical composition of Moroccan Thymbra capitata (L.) Cav. essential oil and its corresponding hydrolat extracted essential oil
 
2. Creator Author's name, affiliation, country A. Moukhles; Faculty of Sciences, University Abdelmalek Essaâdi; Morocco
 
2. Creator Author's name, affiliation, country S. Charfi; Faculty of Sciences, University Abdelmalek Essaâdi; Morocco
 
2. Creator Author's name, affiliation, country S. Zantar; National Institute of Agronomic Research (INRA), Tangier; Morocco
 
2. Creator Author's name, affiliation, country L. Toukour; National Institute of Agronomic Research (INRA), Tangier
 
2. Creator Author's name, affiliation, country A. Ibn Mansour; Faculty of Sciences, University Abdelmalek Essaâdi,; Morocco
 
3. Subject Discipline(s)
 
3. Subject Keyword(s) chemical composition; essential oil; carvacrol; growth stage; hydrolat ; Thymbra capitata (L.)Cav.
 
4. Description Abstract

The aim of the present work was to study the variation in yield and chemical composition of the pure essential oil (EO) and essential oil dissolved in its corresponding hydrolat (HEO) of Thymbra capitata (L.) Cav. of Morocco according to its stage of growth. The results obtained revealed that the yield of essential oil increases with the growth of the plant to reach its maximum at post-flowering stage (2.90%). On the other hand, the yield of dissolved essential oil in the corresponding hydrolats peaked at the flowering stage (0.53%) and then dropped. The analysis of these oils was performed by the GC-MS and showed that carvacrol was the major compound of this plant during its growth stage. The highest carvacrol content was noted at the flowering stage for EO (84.26%) and at the pre-flowering stage for HEO (98.54%). However, the evolution of concentration of p-cymene (3.84-6.01%) and g-terpinene (3.45-5.68%) in EO seems to be the opposite of carvacrol. Moreover, these two monoterpene hydrocarbons are absent or almost absent in HEO.

 
5. Publisher Organizing agency, location
 
6. Contributor Sponsor(s)
 
7. Date (YYYY-MM-DD) 24-03-2019
 
8. Type Status & genre Peer-reviewed Article
 
8. Type Type
 
9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://revues.imist.ma/index.php/morjchem/article/view/14232
 
10. Identifier Digital Object Identifier (DOI) https://doi.org/10.48317/IMIST.PRSM/morjchem-v7i2.14232
 
11. Source Title; vol., no. (year) Moroccan Journal of Chemistry; Vol 7, No 2 (2019)
 
12. Language English=en en
 
13. Relation Supp. Files
 
14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.)
 
15. Rights Copyright and permissions Copyright (c) 2019 Moroccan Journal of Chemistry