M. Momeni Monfared; M. Mahmoodi Sourestani; M. Zolfaghari; M. Malekzadeh
Abstract
In order to evaluate essential oil yield and composition of fifteen accessions of basil (Ocimum basilicum L.), an experiment was conducted in the experimental field of department of horticultural science of Shahid Chamran university of Ahvaz as a randomized complete block design with fifteen treatments ...
Read More
In order to evaluate essential oil yield and composition of fifteen accessions of basil (Ocimum basilicum L.), an experiment was conducted in the experimental field of department of horticultural science of Shahid Chamran university of Ahvaz as a randomized complete block design with fifteen treatments (accessions) and three replications. Accessions were green (Yazd, Canada, Ramhormoz, Jahrom, Shiraz, Shahr rey, Dashtestan and Neyshabour), purple (Jahrom, Shiraz, Ramhormoz and Dashtestan), Golkhosheai, Thyrsiflora and Goldomaghrabi. Leaf yield, essential oil content, yield and components were evaluated. Results showed that there was a significant difference among accessions (P≤0.01) for measured traits. The maximum leaf yield was recorded in Golkhosheai and Goldomaghrabi accessions (613.6 and 550.33 gr.m2). The highest essential oil content was observed in Thyrsiflora (3.16%), Golkhosheai (2.93%) and Goldomaghrabi (2.07%) accessions and the highest essential oil yield was obtained in Golkhosheai, Thyrsiflora and Goldomaghrabi accessions (17.95, 14.72 and 11.42 gr.m2, respectively). According to essential oil analysis by GC-MS, approximately 32 compounds were identified in the essential oil of various basil accessions. Main essential oil compositions were linalool (0.12-68.43%), methyl chavicol (0-55.28%), geraniol (0-33.39%), geranial (0-42.09%), limonene (0-18.03%), methyl eugenol (0.38-4.85%), beta-caryophyllane (0-4.57%) and cubenol (0-6.22%). Essential oil of purple (Jahrom, Shiraz, Ramhormoz and Dashtestan) and Thyrsiflora accessions had the highest amount of methyl chavicol. Essential oil of Golkhosheai, Goldomaghrabi and Canada accessions was rich in linalool. Essential oil of green (Yazd, Canada, Ramhormoz, Jahrom, and Neyshabour) accessions had more geraniol and geranial than other accessions. Overall, the results of this study showed that each accession had a unique characteristic that can be used in pharmaceuticals, cosmetics and food industries.
Z. Azimzadeh; A. Hassani; M. Esmaiili
Abstract
Anise hyssop (Agastache foeniculum [Pursh] Kuntze) is a medicinal and perennial herb, belonging to the Lamiaceae family. The essential oil of this plant is a rich source of Methyl Chavicol, giving antifungal and antibacterial properties to this plant. To evaluate the effect of different drying methods ...
Read More
Anise hyssop (Agastache foeniculum [Pursh] Kuntze) is a medicinal and perennial herb, belonging to the Lamiaceae family. The essential oil of this plant is a rich source of Methyl Chavicol, giving antifungal and antibacterial properties to this plant. To evaluate the effect of different drying methods on the essential oil content and composition of Anise hyssop, the leaves were harvested at full flowering stage and dried by four methods (shade drying, sun drying, oven drying at 40, 60 and 80°C, and microwave oven drying at 180, 360, 540, 720, and 900W) in a completely randomized design with four replications. The drying process was continued until the moisture content of samples reached around 0.11 based on dry weight. Dried leaves were subjected to hydro-distillation using a Clevenger type apparatus to extract the essential oil. The oil samples were analyzed by GC and GC/MS. Results showed that drying methods had significant effect on the drying time and essential oil content. Minimum (4 minutes) and maximum (64 hours) drying time were obtained at 900 W microwave power and shade drying, respectively. The highest (1.51%) and the lowest (0.56%) essential oil content were observed in shade drying and microwave drying in 900 W, respectively. The results of essential oil analysis showed Methyl Chavicol was the main component of essential oil ranging from 83.1% (shade drying) to 94.6% (microwave drying at 720W). Overall, the findings of this study showed that shade drying in spite of long drying time was the best drying method. However, oven drying at 40°C or microwave method in low powers is recommended when our goal is fast drying and achieving essential oil with high percentage of methyl chavicol.
M. Peyvandi; H. Parandeh; M. Mirza
Abstract
Sweet basil (Ocimum basilicum L.) belongs to the Lamiaceae family. Sweet basil essential oil is used in food, medicine, and hygiene industries. In this study, the effect of different concentrations of nano iron chelate fertilizer (1, 3, 5 Kg.ha-1) and iron chelate fertilizer (1.5, 4.5, 7.5kg.ha-1) on ...
Read More
Sweet basil (Ocimum basilicum L.) belongs to the Lamiaceae family. Sweet basil essential oil is used in food, medicine, and hygiene industries. In this study, the effect of different concentrations of nano iron chelate fertilizer (1, 3, 5 Kg.ha-1) and iron chelate fertilizer (1.5, 4.5, 7.5kg.ha-1) on the quantity and quality of O. basilicum essential oil (EO) were investigated. The experiment was conducted in a completely randomized design with four replications in a farm located in Saveh. After collecting the aerial parts of O. balilicum, the EO was extracted via water distillation method. Then, the EO was analyzed by GC and GC/MS. Sixteen components were identified in the EO of O. basilicum. The major components were methyl chavicol (37%), geranial (26%), neral (21%) and caryophyllene oxide (3.5%), respectively. Among different treatments, the means of 10 components showed significant differences. The mean of EO percentage in all samples, treated by Fe and nano Fe fertilizers, was more than that of control.
M.T Ebadi; M. Rahmati; M. Azizi; M. Hassanzadeh Khayyat; A. Dadkhah
Abstract
Drying is one of the oldest methods for preservation of agricultural products after harvest. Basil (Ocimum basilicum L.) belongs to Lamiaceae family which is used as a medicinal and spice species. This experiment was carried out to determine the effect of different drying methods on drying time, ...
Read More
Drying is one of the oldest methods for preservation of agricultural products after harvest. Basil (Ocimum basilicum L.) belongs to Lamiaceae family which is used as a medicinal and spice species. This experiment was carried out to determine the effect of different drying methods on drying time, essential oil content and composition of Basil. The experiment was conducted in a randomized complete blocks design with three replications and treatments were included two temperature levels (50 and 70 °C), six microwave powers (100, 180, 300, 450, 600 and 900 w), and two drying methods (sun and shade drying). The drying process was continued until the mass of the sample was reduced to a moisture content of about 0.10 on a dry basis or 10 % on a wet basis. Results indicated minimum and maximum drying times (4.1 minutes and 48 hours) were obtained at 900 w microwave powers and shade drying, respectively. Maximum and minimum essential oil content (1.3 and 0.3 %) were obtained by shade drying and in 450, 600 and 900 w, respectively. Microwave powers had negative effect on the main compositions of essential oil (geranial and methyl chavicol) but shade drying preserved them. According to the results, shade drying was identified as a suitable method for Basil, because essential oil content and composition were considerably maintained.
E. Rajabbeigi; F. Ghanati; F. Sefidkon; P. Abdolmaleki
Volume 22, Issue 4 , February 2007, , Pages 341-350
Abstract
The effects of electromagnetic field (1 kHz) on the growth and the amounts and composition of essential oils of sweet basil (Ocimum basilicum) were studied. Basil plants were exposed to the electromagnetic field for 6 days, each 5 hours, discontinuously. Compared to the control plants, the growth of ...
Read More
The effects of electromagnetic field (1 kHz) on the growth and the amounts and composition of essential oils of sweet basil (Ocimum basilicum) were studied. Basil plants were exposed to the electromagnetic field for 6 days, each 5 hours, discontinuously. Compared to the control plants, the growth of treated plants and their essential oils were decreased. This may be resulted from decrease in the activity of certain enzymes involved in the essential oil biosynthesis pathway. Methyl chavicol, geraniol, and nerol were three major components of essential oil of basil. Treatment with electromagnetic field, however, increased the content of methyl chavicol, suggesting an increase in the activity of chavicol-o-methyl transferase. This in return, suggests that the electromagnetic field can effect on the metabolism of essential oils indirectly i.e., through enzymatic proteins such as chavicol-o-methyl transferase. The results of the present study indicate that the electromagnetic field can be considered as a tool to increase methyl chavicol and probably other medicinal compounds in the desired plants.
F. Sefidkon
Volume 10, Issue 1 , November 2001, , Pages 85-104
Abstract
The essential oils, water-steam distilled, from Foeniculum vulgare Mill., harvested at 3 ontogenic stages (inflorescence at flowering stage, unripe seed and ripe seed), were evaluated for their chemical composition by GC and GC-MS. Twenty-two compounds were identified and the main constituents were (E)- ...
Read More
The essential oils, water-steam distilled, from Foeniculum vulgare Mill., harvested at 3 ontogenic stages (inflorescence at flowering stage, unripe seed and ripe seed), were evaluated for their chemical composition by GC and GC-MS. Twenty-two compounds were identified and the main constituents were (E)- anethole, limonene, fenchone and methyl chavicol. Higher oil yields were found at the unripe seed stage (5% w/w), but higher (E)- anethole percentage was found in the oil of ripe seed and chemical composition was influenced by the harvesting time.
