Determine optimum of harvest time on the quantity/quality of essential oil and thymol of thyme (Thymus vulgaris L.) in Isfahan

Journal of Medicinal Herbs, "J. Med Herb" (Formerly known as Journal of Herbal Drugs or J. Herb Drug)

مقاله 4، دوره 2، شماره 1، مرداد 2011، صفحه 23-32   

نوع مقاله: Original article

نویسندگان

Amin Hadipanah^{* 1}؛ Ahmad Reza Golparvar²؛ Abdollah Ghasemi Pirbalouti³؛ Hossian Zaynali⁴

¹MSc. Student of Horticultural-Medicinal Plants Science, Jiroft Branch, Islamic Azad University, Jiroft, Iran;

²Department of Agronomy and Plant Breeding, Khorasgan (Isfahan) Branch, Islamic Azad University, Isfahan, Iran;

³Research Center of Medicinal Plants and Ethno-veterinary, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran;

⁴Agriculture Researches Centre of Isfahan, Isfahan, Iran;

چکیده

Background & Aim: Thyme is common named Thymus vulgaris L. belongs to Lamiaceae family. Thyme is a most important medicinal plant that was used in pharmaceutical, food, cosmetics hygienic industries in most of developed countries.
Experimental: Determine optimum of harvest time this plant was done in a random block design with three replications was conducted in field Islamic Azad University of Khorasgan (Isfahan) 2009 and 2010. Treatment phonological stages such as: 1) before flowering stage; 2) at beginning of flowering stage; 3) 50% blooming stage; 4) at full flowering step and 5) at fruit set stage. The essential oil obtained by hydro-distillation using a Clevenger- type apparatus and, was analyzed by GC and GC/MS.
Results & Discussion: Statistic analysis showed that the effects phonological stages had significant effect on essential oil yields & percent, thymol. The highest essential oil content (2.42%) was extracted at the beginning of flowering stage. Analysis and identification of components showed thymol main compounds in all samples.
Industrial/Practical recommendation: According to the results of this project 50% blooming stage optimum of harvest time on the Quantity/Quality of Essence and thymol of Thyme.   

کلیدواژه‌ها

Thymus vulgaris؛ Phonological stages؛ Essential oil yields؛ Thymol

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