Iranian Journal of Medicinal and Aromatic Plants Research

Chemical constituents of Mentha longifolia (L). Hudson – var. chlorodictya Rech. F. from two different habitats of Gorgan

M. Mazandrany; M.B. Rezaee

Volume 15, Issue 1 , January 2003, , Pages 69-81

Abstract

Mentha longifolia (L). Hudson is from Lamiaceae family and have different varieties which essential oil content and the other Lamiaceae members seems to be influenced by environmental factors, in present study we select Mentha longifolia (L). Hudson var. Chlorodictya Rech. F. samples collected from two ... Read More

Essential Oil Composition of 5 Thymus species

F. Sefidkon; F. Askari

Volume 12, Issue 1 , May 2002, , Pages 29-51

Abstract

The genus of Thymus presents 14 species in Iran, some of them are endemic (1). In this project some of the endemic and non-endemic Thymus species, named: T. pubescens Boiss. et Kotschy ex Celak, T. carnosus Boiss, T. kotschyanus Boiss and Hohen, T. persicus (Ronniger ex Rech. F.) Jalas and T. serpyllum ... Read More The genus of Thymus presents 14 species in Iran, some of them are endemic (1). In this project some of the endemic and non-endemic Thymus species, named: T. pubescens Boiss. et Kotschy ex Celak, T. carnosus Boiss, T. kotschyanus Boiss and Hohen, T. persicus (Ronniger ex Rech. F.) Jalas and T. serpyllum L. were collected from different regions at before flowering and full flowering stage. The air-dried aerial parts of these species were steam distilled for obtaning their essential oils. The oil yields are as follow respectively: at before flowering (0.66%, 0.28%, 0.26%, 0.55% and 0.57%) and at full flowering stage (0.86%, 2.1%, 0.43%, 1.45% and 0.90%). Totally the oil yields were lower for theses Thymus species before flowering. The highest oil yields were obtained from T. kotschyanus and T. pubescens. Analysis and identification of chemical composition of the oils were performed by GC and GC/MS. Thirty-seven components (representing 93.1%-98.3% of the oils) at before flowering stage and thirty-nine components (representing 88.2%-99.3% of the oils) at full flowering stage were identified. The main components of the oils were as follow, before and full flowering stage, respectively: T. carnosus, thymol (27.2% and 36.1%), g-terpinene (19.6% and 19.1%), p-cymene (26.2% and 21.3%), b-caryophyllene (2.5% and 2.8%), carvacrol (2.2% and 2.5%) and borneol (1.6% and 1.6%). T. kotschyanus carvacrol (40.7% and 41.4%), thymol (26.9% and 19.5%), g-terpinene (7.3% and 10.3%), p-cymene (3.9% and 5.3%), b-caryophyllene (1.8% and 2.5%) and borneol (1.3% and 2.4%) T. persicus (39.0% and 27.1%), thymol (6.5% and 11.9%), g-terpinene (6.1% and 6.5%), p-cymene (7.5% and 10.2%), b-caryophyllene (2.0% and 3.0%) and borneol (1.6% and 2.9%). T. pubescens carvacrol (64.8% and 48.8%), thymol (11.9% and 13.9%), g-terpinene (6.1% and trace), p-cymene (2.9% and 12.7%), b-caryophyllene (1.5% and 1.3%) and borneol (0.7% and 3.8%). T. serpyllum, thymol (18.7% and 18.7%), g-terpinene (21.9% and 22.7%), p-cymene (21.1% and 20.7%), b-caryophyllene (7.1% and 0.1%) and borneol (3.9% and 3.1%) Geraniol (15.7% and 9.4%), Geranyl acetate (5.3% and 5.3%) and a-terpineol (0 and 9.5%) were found just in T. persicus oil before and full flowering stage, respectively. Germacrene D was also found in T. serpyllum oil (6.0% and 5.1%).

Essential Oil of Thymus pubescens Boiss. et Kotschy ex Celak from Different Locality of Lar valley

F. Askari; F. Sefidkon; M.B. Rezaee

Volume 12, Issue 1 , May 2002, , Pages 87-127

Abstract

The genus of Thymus Presents 14 species, which are found wild in different regions of Iran (1). One of the more distributed of these species is Thymus pubescens (2). The aerial parts of Thymus pubescens were collected from three various localities of Lar valley (in East of Tehran province). Essential ... Read More

chemical composition of flower's absolute of Syringa microphylla Diels.

F. Askari; M. Mirza

Volume 10, Issue 1 , November 2001, , Pages 127-141

Abstract

Syringa microphylla Diels. is an ornemental plant. the fragrant flowers of S. microphylla, werw collected from national Bonitical Garden of Iran in the spring, then extaracted with hexan. after removing the plant waxes its absolute injected to GC and GC/ms. nineteen compounds were identified representing ... Read More

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Keywords = Carvacrol

Chemical constituents of Mentha longifolia (L). Hudson – var. chlorodictya Rech. F. from two different habitats of Gorgan

Abstract

Essential Oil Composition of 5 Thymus species

Abstract

Essential Oil of Thymus pubescens Boiss. et Kotschy ex Celak from Different Locality of Lar valley

Abstract

chemical composition of flower's absolute of Syringa microphylla Diels.

Abstract