scholarly journals Changes of the characteristics of Satureja hortensis L. herb during flowering period

2001 ◽  
Vol 7 (2) ◽  
Author(s):  
M. Héjja ◽  
É. Héthelyi ◽  
A. Z. Ferenczy ◽  
E. Szentgyörgyi
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Flowering Period ◽  
Bud Formation ◽  
Satureja Hortensis ◽  
Oil Components ◽  
Different Origins

In this study the changes of the characteristics of Satureja hortensis herb were investigated during flowering period, in case of savories of 4 different origins. The change of drying ratio, leaf/stem ratio, essential oil content, the ratio of several essential oil components (carvacrol, y-terpinene, p-cymol, a-pinene, p-pinene and fi-caryophyllene) were studied from bud formation till seed ripening.

scholarly journals Effect of Nitrogen, Location, and Harvesting Stage on Peppermint Productivity, Oil Content, and Oil Composition

HortScience ◽  
2009 ◽  
Vol 44 (5) ◽  
pp. 1267-1270 ◽  
Author(s):  
Valtcho D. Zheljazkov ◽  
Vasile Cerven ◽  
Charles L. Cantrell ◽  
Wayne M. Ebelhar ◽  
Thomas Horgan
Keyword(s):  
United States ◽  
Essential Oil ◽  
Field Experiment ◽  
Oil Content ◽  
Southeastern United States ◽  
Oil Composition ◽  
Bud Formation ◽  
Biomass Yields ◽  
Harvesting Stage ◽  
Growing Region

Peppermint (Mentha ×piperita) is currently not a common crop in the southeastern United States. Recently, there has been an interest in peppermint as an essential oil crop for this region. In 2007, a field experiment was conducted in Mississippi to determine the effect of nitrogen (N) (0 and 80 kg·ha−1), location (Verona and Stoneville), and harvesting stage (bud formation and flowering) on peppermint productivity, oil content, and composition. Peppermint biomass yields were higher at Verona (8.12 t·ha−1) than at Stoneville (6.12 t·ha−1). However, the essential oil content was higher at Stoneville (1.1%) than at Verona (0.6%). Generally, N rate at 80 kg·ha−1 did not affect oil yield and composition compared with 0 kg·ha−1. The concentrations of the major essential oil constituents were: (-)-menthol at 26% to 30%, (-)-menthone at 14% to 21%, (+)-menthofuran at 5% to 11%, and eucalyptol at 3% to 4% of total essential oil (wt/wt) and were generally within the values previously reported. The concentrations of (-)-menthone and (+)-menthofuran were significantly higher at Stoneville, 21% and 11%, respectively, than at Verona (14% and 6%). The (-)-menthol, (-)-menthone, and (+)-menthofuran yields/ha were higher at Stoneville than at Verona. Overall oil content and yields were higher at bud formation than at flowering, 1.3 and 1.8 times, respectively. In addition, the concentration of (-)-menthone and eucalyptol and the yields of (-)-menthone, (+)-menthofuran, and eucalyptol were higher at bud formation than at flowering. The results from this study demonstrated peppermint can be successfully grown in Mississippi and provide essential oil yields and composition comparable to those in the northwestern United States, the traditional peppermint-growing region.

scholarly journals Research Concerning the Use of Different Mulching Methods on Lavender

2020 ◽  
Vol 77 (1) ◽  
pp. 154
Author(s):  
Zsolt SZEKELY-VARGA ◽  
Monica Tereza BOSCAIU NEAGU ◽  
Maria CANTOR
Keyword(s):  
Veterinary Medicine ◽  
Essential Oil ◽  
Organic Farming ◽  
Biological Material ◽  
Oil Content ◽  
Control Treatment ◽  
Flowering Period ◽  
Lavandula Angustifolia ◽  
Weed Density ◽  
The University

Lavandula angustifolia Mill. is a highly appreciated and precious shrub worldwide due to the high essential oil content and properties. The aim of this research was to determine the influence of organic farming on lavender production. The experiment was carried out during a 2-years period (2018 - 2019) at the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, in the experimental field. The biological material used in this experiment was represented by two Lavandula angustifolia Mill. cultivars (‘Codreanca’ and ‘Sevtopolis’). The observations consisted of the evaluation of weed density, two times/year, at the beginning and at the end of the flowering period of the lavender plants. As expected, the highest weed density was in the control treatment followed by the straw/hay treatment while the lowest weed density was recorded in the treatment with the mulch foil.

scholarly journals Changes within the Daytime of Essential Oil Content and Composition of Zahter (Thymbra spicata L.) Grown in Ermenek Conditions

2019 ◽  
Vol 7 (sp2) ◽  
pp. 13
Author(s):  
Hasan Maral ◽  
Saliha Kırıcı
Keyword(s):  
Essential Oil ◽  
Diurnal Variation ◽  
Oil Content ◽  
Flowering Period ◽  
Main Components ◽  
Thymbra Spicata

Thymbra spicata var. spicata is known as “Zahter ”, “Sater” or “Karabaş thyme in the Southeastern Anatolia Region of Turkey and leaves and flowers are consumed as spices and tea, while young shoots are consumed as salads.This study was carried out to determine the change in essential oil content and chemical compositionduring the daytime of the Thymbra spicata plant in Ermenek district of Karaman.In order to determine the diurnal variation, the harvest was done at 5 different hours during the daytime (6:00, 9:00, 12:00, 15:00 and 18:00) in the flowering period. The harvested plants were dried in the shade and the essential oil contents were determined by Clevenger apparatus by hydro distillation and analyzed by GC-MS. The highest content of essential oil was obtained at 18.00 hours with 2.96% and the lowest one’s was obtained at 12.00 hours with 2.20%.The main components of the essential oil were determined as carvacrol (23.29% - 39.89%), thymol (16.24% - 21.52%) and γ-terpinene (18.01% - 20.90%).

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