02237nas a2200229   4500008004100000245010500041210006900146260026900215300001100484490000600495520125000501653002601751653001301777653001801790653002001808100001501828700001601843700001901859700001801878700001301896856009801909       2006                        eng d00aStudy on variation of essential oil quality and quantity in dry and fresh herb of Thyme and Tarragon0 aStudy on variation of essential oil quality and quantity in dry   aAffiliation: Institute of Medicinal Plants, ACECR, Tehran, Iran; Affiliation: Department of Pharmacognosy, School of Pharmacy, Shaheed Beheshty University of Medical Sciences, Tehran, Iran; Affiliation: Institute of Medicinal Plants, No 97, Bozorgmehr St,c2006///  a7 - 150 v53 aBackground: Thymus vulgaris L. belongs to Lamiaceae family that has 14 aromatic and perennial species, Tarragon (Artemisia dracunculus L.) belongs to Asteraceae family, this genus has 34 annual and perennial species. These two species aren't self growing in Iran but are cultivated. Widely use of two species (Thyme, Tarragon) essential oils in different industries indicate that, plant water content affects on yield and constituens of essential oil. Objective: To find out the essential oil quality and quantity in dry and fresh aerial parts of Thyme and Tarragon herbs. Method: The aerial parts of Thyme and Tarragon are collected in dry and fresh from. The essential oils extracted with Clevenger set by hydrodistillation method. The yield and constituens of essential oils were determined by GC/mass. Results: No variation between yield and constituents of essential oil of Tarragon was observed in fresh and dried herb at 35°C. The essential oil yield and constituents of dried Thyme at 35°C obviously decreased as compared to fresh herb. Conclusion: The yield and constituents of essential oil of tarragon herb are same in fresh and dried form but yield of constituents and essential oil in aerial part of thyme decreased in dried form.10aArtemisia dracunculus10aDry herb10aEssential oil10aThymus vulgaris1 aYazdani, D1 aShahnazi, S1 aJamshidi, A, H1 aRezazadeh, Sh1 aMojab, F  uhttp://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-33746801977&partnerID=40&rel=R6.5.002983nas a2200229   4500008004100000245011700041210006900158260020700227300001400434490000700448520207200455653001402527653001502541653000802556653001102564653002002575100001802595700001502613700001402628700001402642856009702656       2004                        eng d00aEffects of spacing and harvesting time on herbage yield and quality/quantity of oil in thyme, Thymus vulgaris L.0 aEffects of spacing and harvesting time on herbage yield and qual  aAffiliation: Inst. Med. Plants Nat. Prod. Res., Iranian Acad. Ctr. Educ., Culture R., Bozorg. St., Qods St., Enghelab Ave., Tehran, Iran; Affiliation: ACECR-Shaheed Beheshtii Unit, Tehran, Iranc2004///  a231 - 2360 v193 aThyme (Thymus vulgaris L.) is member of Lamiaceae family, which distributes in different areas of Meditranea and Asia. Thyme volatile phenolic oil has been reported to be among the top 10 essential oils, showing antibacterial, antimycotic, antioxidative, natural food preservative, and mammalian age delaying properties. It has been known that agronomical factors have a great effect on both quality and quantity of essential metabolites. For this reason, it is necessary to determine optimum levels of agronomical factors affecting plant growth and production. Planting space and time of harvesting are the most important agronomical factors. This study has been conducted in Research farm of ACECR, Institute of Medicinal Plants & Natural Products Research along 1999-2000 on the base of factorial experiment in randomized complete block design with three replications. Thyme is cultivated in rows of 50cm apart with inter-row spacing of 15, 30 or 45cm. Plants are harvested in three stages, i.e. the beginning of blooming, full blooming and fruit set. In order to study the effects of plants space and time of harvesting, plant height, plant diameter, yields of dry and fresh herbage, content (%) and yield of oil, thymol and carvacrol were measured. Planting space had significant effect on plant diameter (P<0.05) and very significant effect (P<0.01) on other measured parameters except oil content, which was not significant. Time of harvest had significant effect on yield of fresh herbage, content of oil and content of carvacrol (P<0.05). Its effect on other parameters was very significant (P<0.01) except dry herbage and oil yield. The maximum yield of dry and fresh herbage, yield and content of oil and thymol yield were obtained in 15cm space and beginning of blooming stage. Maximum thymol content was observed in the beginning of blooming and 45cm space. However, 15cm spacing and harvesting in the beginning of blooming was the best treatment in respect of yield of dry matter, oil and thymol per unit area. © 2003 Elsevier B.V. All rights reserved.10aCarvacrol10aDry matter10aOil10aThymol10aThymus vulgaris1 aNaghdiBadi, H1 aYazdani, D1 aAli, S, M1 aNazari, F  uhttp://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-1842787835&partnerID=40&rel=R6.5.002630nas a2200169   4500008004100000245007200041210006900113260001400182300001400196490000700210520208500217100001502302700001502317700001402332700001402346856010002360       2004                        eng d00aEffects of spacing and harvesting time on herbage yield and quality0 aEffects of spacing and harvesting time on herbage yield and qual  c2004/05//  a231 - 2360 v193 aThyme (Thymus vulgaris L.) is member of Lamiaceae family, which distributes in different areas of Meditranea and Asia. Thyme volatile phenolic oil has been reported to be among the top 10 essential oils, showing antibacterial, antimycotic, antioxidative, natural food preservative, and mammalian age delaying properties. It has been known that agronomical factors have a great effect on both quality and quantity of essential metabolites. For this reason, it is necessary to determine optimum levels of agronomical factors affecting plant growth and production. Planting space and time of harvesting are the most important agronomical factors. This study has been conducted in Research farm of ACECR, Institute of Medicinal Plants & Natural Products Research along 1999-2000 on the base of factorial experiment in randomized complete block design with three replications. Thyme is cultivated in rows of 50 cm apart with inter-row spacing of 15, 30 or 45 cm. Plants are harvested in three stages, i.e. the beginning of blooming, full blooming and fruit set. In order to study the effects of plants space and time of harvesting, plant height, plant diameter, yields of dry and fresh herbage, content (%) and yield of oil, thymol and carvacrol were measured. Planting space had significant effect on plant diameter (P < 0.05) and very significant effect (P < 0.01) on other measured parameters except oil content, which was not significant. Time of harvest had significant effect on yield of fresh herbage, content of oil and content of carvacrol (P < 0.05). Its effect on other parameters was very significant (P < 0.01) except dry herbage and oil yield. The maximum yield of dry and fresh herbage, yield and content of oil and thymol yield were obtained in 15 cm space and beginning of blooming stage. Maximum thymol content was observed in the beginning of blooming and 45 cm space. However, 15 cm spacing and harvesting in the beginning of blooming was the best treatment in respect of yield of dry matter, oil and thymol per unit area. (C) 2003 Elsevier B.V All rights reserved.1 aBadi, H, N1 aYazdani, D1 aAli, S, M1 aNazari, F  uhttps://thymus.myspecies.info/ref/effects-spacing-and-harvesting-time-herbage-yield-and-quality