R. Shahhoseini; M. Moghaddam; D. Kiani; R. Mansori
Abstract
Rosemary (Rosmarinus officinalis L.), belonging to Lamiaceae family, is a perennial, medicinal and aromatic plant. The plant and its secondary metabolites are widely used in landscape designing and pharmaceutical, cosmetic and food industries. This research was conducted as two experiments in a RCBD ...
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Rosemary (Rosmarinus officinalis L.), belonging to Lamiaceae family, is a perennial, medicinal and aromatic plant. The plant and its secondary metabolites are widely used in landscape designing and pharmaceutical, cosmetic and food industries. This research was conducted as two experiments in a RCBD (Randomized Complete Block Design) with six treatments (0, 1000, 2000, 3000, 4000 and 5000 mg l-1) and four replications in order to evaluate the effects of different concentrations of IBA and NAA on rooting of semi-hardwood cuttings of rosemary. Cuttings were treated in solutions of IBA and NAA for 1 min and held in plastic tunnel under mist system. After 70 days, the percentage of rotting, number of roots, average root length, the root fresh and dry weight, length of cutting, leaves and stem fresh and dry weight were measured. The analysis of variance showed that application of IBA and NAA had a significant effect on all the parameters studied. The highest rooting percentage was obtained at concentration of 1000 mg l-1 NAA (84%) and 5000 mg l-1 IBA (66%). The concentration of 4000 mgl-1 IBA was the best treatment on quality and rooting of the semi-hardwood cuttings of rosemary.
A.A. Zarea; M.J. Malakouti; H.A. Bahrami; F. Sefidkon; R. Shahhosseini
Abstract
Lippia citriodora H. B. et K. is a valuable medicinal plant whose extract, as its main chemical composition, has active components such as Geranial and Limonene widely used in pharmaceutical, food, cosmetic and health industries. In medicinal plants, balanced fertilization using chemical and biological ...
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Lippia citriodora H. B. et K. is a valuable medicinal plant whose extract, as its main chemical composition, has active components such as Geranial and Limonene widely used in pharmaceutical, food, cosmetic and health industries. In medicinal plants, balanced fertilization using chemical and biological inputs has great effect on yield and phytochemicals related to yield production. This study was conducted in the greenhouse of Tarbiat Modares University. In this experiment, seven treatments were performed in a completely randomized block design with three replications. The aim of this study was to investigate the effects of balanced fertilization and super-absorbent polymer on the chemical components and yield of Lippia citriodora. After planting and harvesting operations and growth performance measurements, essential oil was dehydrated by distilled water method using Clevenger and Sodium sulfate. Using gas chromatography and gas chromatography connected to spectrum, 15 compounds were determined in essential oil, consisting more than 90% of essential oil components. Results showed that there was a significant difference among treatments (p< 0.01). The lowest and highest fresh yield were related to control (6410 kg.ha-1) and balanced fertilization + bio-fertilizer + super-absorbent polymer (15435 kg. ha-1) treatments, respectively. The lowest and highest dry leaf yield were obtained in control (702 kg.ha-1) and balanced fertilization + bio-fertilizer + super-absorbent polymer (1503 kg. ha-1) treatments, respectively. The lowest and highest essential oil content was achieved in control (7.4 kg.ha-1) and balanced fertilization + bio-fertilizer + super-absorbent polymer (20.5 kg.ha-1) treatments, respectively. In terms of overall essential oil components, the minimum and maximum contents of Neral and Geranial were obtained in control and balanced fertilization treatments with 41.2% and 52.27%, respectively.
R. Shahhoseini; A. Babaei; M. Mirmasoomi; R. Omidbaigi
Abstract
Jujube (Ziziphus jujube Mill.) is one of the medicinal plants containing mucilage and is used in the fields of pharmaceutical, medical, healthcare and industrial purposes. In evaluation of medicinal plants, secondary metabolites could be considered as a valuable indicator. In this experiment, optimizing ...
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Jujube (Ziziphus jujube Mill.) is one of the medicinal plants containing mucilage and is used in the fields of pharmaceutical, medical, healthcare and industrial purposes. In evaluation of medicinal plants, secondary metabolites could be considered as a valuable indicator. In this experiment, optimizing extraction method of mucilage was evaluated based on the Patumi and Karawya methods and comparing the amount of mucilage in jujube ecotypes. For this purpose, 25 ecotypes of jujube were collected from different parts of the country. Research was performed in two separate experiments in a completely randomized design with four replications in the Genetics and Plant Physiology lab of the University of Tehran during 1388 and 1389. Results of this study showed that warm extraction was identified as the most suitable method. Also, results showed that there were significant differences among ecotypes in terms of amount of mucilage. The variation range of mucilage differed among the ecotypes from 28/92% to 11/58%. Maximum amount of mucilage was recorded for ecotypes of Kasva (Qom) and Kolaleh (Mazandaran). Generally, results of this research could be used to select the best ecotypes for medicinal purposes as well as providing good information for linebreeding of the valuable medicinal plant.
S.R. Karimi; R. Shahhoseini; S. Zakeri
Abstract
Lemon verbena (Lippia citriodora H. B. et K.) is one of the medicinal plants, belonging to the family Verbenaceae. This plant has active ingredients with sedative, anticonvulsant, heartbeat away, anti-diarrhea and antimicrobial effects. Accurate drying of medicinal plants is inevitable in order to reduce ...
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Lemon verbena (Lippia citriodora H. B. et K.) is one of the medicinal plants, belonging to the family Verbenaceae. This plant has active ingredients with sedative, anticonvulsant, heartbeat away, anti-diarrhea and antimicrobial effects. Accurate drying of medicinal plants is inevitable in order to reduce the humidity and increase the longevity and quantity and quality of the active ingredients. In this research, hot air dryer was used to dry the leaves of lemon verbena by using temperatures of 30, 40 and 50ºC and different air speeds of 0.5, 1 and 1.5 m/s to reach a humidity of 15%. Essential oil was extracted by Clevenger apparatus. Results showed that effects of temperature and air speed and their interaction on drying time were significant. Results of mean comparisons showed no significant difference between the temperatures of 40ºC and 50ºC. With increase of temperature, the effect of air speed was negligible. The best treatment in terms of minimum drying time was 40ºC and 1 m/s speed. Different levels of temperature showed significant effect on quantity of the essential oil as the highest and the lowest essential oil level were respectively obtained at 30ºC and 40ºC. The speed of the hot air also showed a significant effect on quantity of the essential oil as the maximum essential oil was obtained at the speed of 0.5 m/s. The results of interaction effects showed that maximum essential oil obtained at 500C temperature and 0.5 m/s speed. Finally, 7 Mathematical models of thin layer drying for different conditions such as R2, SSE and RMSE were compared. According to the results, Modified Page was identified as the best model for drying lemon verbena.
