جستجوی مقالات مرتبط با کلیدواژه « Methyl-chavicol » در نشریات گروه « علوم پایه »

Marrubium vulgare (horehound) has been used to treat gastrointestinal disorders, inflammation. This plant has beneficial therapeutic properties and purifies the blood. In this research the changes in the composition of essential oils, aerial herb yield, and antioxidant activity of the aerial parts of Marrubium vulgare were determined at different treatments of zinc. An experiment was performed using completely randomized design (CRD) with five different treatments (T1= Control, T2= Zn sulfate, T3=Nano Zn, T4= EDTA- chelated Zn and T5= Citrate chelated- Zn) in three replications in Eram Garden greenhouse, Shiraz, Iran. The essential oil of air-dried samples was obtained by hydro distillation and analysed by gas chromatography/mass spectrometry (GC/MS). The result showed a significant difference between all zinc treatments for Estragol (methyl chavicol), biological activities and introducing new monoterpene oxygenated. The highest value of methyl chavicol was observed in zinc citrate (68.2%), followed by EDTA chelated Zn (51.2%), Zn sulfate (40.6%) and Nano Zn (18.5%), respectively. The highest essential oil (EO) content (w/w%) was obtained in the plants treated with Nano Zn (0.25%). The high antioxidant activity (735.3 mg/L) was found when Nano-Zn was applied. Results revealed that application of Zn to horehound may be very useful for the production of active natural compounds such as methyl chavicol for drug industries and medical materials.Abbreviations: DPPH: (2,2-diphenyl-1-picryl-hydrazyl-hydrate), EO: Essential oil, GC/MS: Gas chromatography/ mass spectrometry, HEO: Horehound essential oil.

Sweet basil (Ocimum basilicum L.) is an herbaceous annual aromatic herb belongs to the Lamiaceae family. The compositions of essential oil are the main parameters for assessing quality of basil for different food, pharmaceutical, and chemical industries. On the other hand, secondary metabolites in basil are affected by the interaction of location and genetics. In this study essential oil composition of two basil cultivars (green and purple) in different cultivation site were determined. The experiment took place in Isfahan and Marand cities with different climate, edaphic and elevation factors. Plants were harvested at flowering stage and transported to the laboratory and samples dried at shade condition. Essential oils were obtained by hydro-distillation and analysis of essential oils was carried out by GC and GC-MS technics. There were differences among constituents in the essential oil content from the basil cultivars at two locations. For green basil, the major constituent of the essential oil from aerial parts were Geraniol (36.21%, in Marand region), nerol (27.02%) and methyl-chavicol (18.79%) in Isfahan region. Green basil, grown in the Isfahan region had higher concentrations of essential oils component than in the Marand region. For purple basil, methyl-chavicol (54.54%) and linalool (26.10%) in Marand region and (E)-β- ocimene (3.86%) in Isfahan regain were the highest essential oil components. According to our results, location could affect the efficacy of production for use of basil in drug industries.

The negative impact of contaminated soil with heavy metals on plant and human health is an important global concern. To evaluate the effect of lead (Pb(NOз)2) stress (0, 25, 75, 100, and 150 µM) on the germination, growth, physiological, and biochemical of sweet basil (Ocimum basilicum L.), a pot experiment based on completely randomized design (CRD) with three replicates was conducted at the Department of Horticultural Science, Shahed University of Tehran, in 2018. The contaminated soil with Pb had a negative impact on germination indices (percentage and rate), growth and morphological parameters (shoot and root length and dry weight), and physiological parameters (LAI, photosynthetic pigments, and number of leaf secretory glands). Pb stress (150 µM) led to a reduction in the average of germination percentage (43.33%), germination rate (62.92%), shoot and root dry weight (60.22 and 77.43%, respectively), LAI (64.68%), total chlorophyll content (73.10%), and number of leaf secretory glands (33.3%) in compared to the control treatment (without Pb), while increased peroxidase activity (62.3%), proline content (70.14%), and the root and shoot Pbcontent (92.10 and 97.6%,respectively). On the Other hand, Pb stress led to a change in the content of essential oil compounds. In general, low levels of Pb (25 µM) appear to increase the predominance of oil compounds. In conclusion, common basil cultivation in the Pb contaminated soil could cause undesirable effects on the germination indices, growth and morphological traits, and physiological attributes but might behave a positive influence under low level (25 µM) on the essential oil composition.

Basil belonging to the Lamiaceae family, is one of the most important aromatic and medicinal plants, and is widely cultivated in many countries. Areal parts, especially leaves of sweet basil are widely used to enhance the flavour of food stuffs such as salads, pasta, tomato products, vegetables, pizza, meat, soups, marine foods, confectioneries and other products. In this report, the yield and chemical components of essential oils of two species of basil (Ocimum ciliatum and Ocimum basilicum) grown in southwestern of Iran (Chaharmahal and Bakhtiary Province) were investigated. The water-distilled oils were analyzed by means of a GC-MS apparatus. The oil yields obtained from the aerial parts of Ocimum basilicum were found to be 0.285 mL/100 g and 0.71 mL/100 g when using the dry plant materials, respectively. The major constituents of the essential oil from the aerial parts of O. basilicum were methyl chavicol or estragol (49.7%), linalool (10.7%), α-cadinol (5.9%), (Z)-β-farnesene (3.8%) and 1,8-cineole (3.5%). The main constituents of the essential oil from the aerial parts of O. ciliatum were methyl chavicol (38.1%), (E)-citral (14.6%), (Z)-citral (11.5%), (E)caryophyllene (6.4%) and cis-α-bisabolene (4.0%). A simple comparison of our results with the previous reports suggests that differences in the essential oil compositions and oil yields of the studied plants could be mainly attributed to genetic diversity in two Iranian species of basil.