Phytochemistry (extraction, identification and measurement of active components)
V. Abdossi; B. Tavakoli; A. Mehrafarin; H.A. Naghdibadi
Abstract
To evaluate the quantitative and qualitative characteristics of Echinophora platyloba DC. under the influence of different drying methods, an experiment was conducted in a completely randomized design with 12 treatments and three replications in 2019. The experimental treatments included fresh plant, ...
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To evaluate the quantitative and qualitative characteristics of Echinophora platyloba DC. under the influence of different drying methods, an experiment was conducted in a completely randomized design with 12 treatments and three replications in 2019. The experimental treatments included fresh plant, drying the plant in the shade and sun, drying the plant with an oven at three temperatures of 45, 55, and 65 °C, drying the plant with a vacuum oven at three temperatures of 45, 55, and 65 °C, and drying the plant with a microwave at three powers of 200, 400, and 600 W. The aerial parts of the plant was collected from the heights of Tuyserkan city in Hamedan province in June and was affected by the different drying methods. The essential oil was extracted by Clevenger apparatus and then its components were identified by GC-MS. The findings of this study showed that the different methods of plant drying had a significant effect on the percentage and all the components of essential oil. The microwave drying method at 400 W, despite not being suitable for preserving the secondary metabolites of the plant, caused the highest essential oil content. The shade-drying method, despite the long drying time, was the most suitable method for preserving the essential oil composition in E. platyloba. The essential oil percentage in this study ranged from 0.06% to 0.39% and the main essential oil constituents included trans-β-ocimene (34.16-57.52%), α-phellandrene (8.87-16.52%), cis-ocimene (1.69-4.57%), b-phellandrene (2.08-9.24%), p < /em>-cymene (1.53-5.05%), β-pinene (0.73-1.94%), a-pinene (1.83-5.15%), veloutone (0.39-3.78%), trans-carveol (0.38-1.92%), linalool (0.72-3.57%), and germacrene-D (1.67-4.91%).
F. Shekari; A. Mehrafarin; H.A. Naghdi Badi; R. Hajiaghaei
Abstract
The use of bio-stimulators is very important in getting better quality and plant performance sustainability. Therefore, a study was conducted on Plantago psyllium L. at research field of the Institute of Medicinal Plants, ACECR in 2011 on the basis of Complete Randomized Blocks Design with 10 treatments ...
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The use of bio-stimulators is very important in getting better quality and plant performance sustainability. Therefore, a study was conducted on Plantago psyllium L. at research field of the Institute of Medicinal Plants, ACECR in 2011 on the basis of Complete Randomized Blocks Design with 10 treatments and three replications. The treatments were included bio-stimulators including Kadostim, Fosnutren, Humiforte and Aminolforte in two levels of 0.75 and 1.5 L.ha-1, chemical fertilizer (70 kg.ha-1) and control (without bio-stimulators and fertilizer). Results showed that the treatments had significant effect on number of axillary shoots, number of spikes per plant, number of seeds per plant, 1000- grain weight and seed yield (p<0.01), plant height, spike width, number of seeds per spike and shoot dry yield (p<0.05). However, the study treatments had no significant effect on spike length. The maximum plant height, number of axilliary shoots and shoot dry yield were obtained in Kadostim 1.5 L.ha-1. The maximum spike width and number of seeds per spike were achieved by Fosnutren 1.5 L.ha-1. The highest 1000-grain weight was recorded in treatments of Kadostim and Fosnutren 1.5 L.ha-1 and the maximum number of spikes per plant and seeds per spike were observed in treatment of chemical fertilizer. The maximum and minimum seed yield (445 and 149 kg.ha-1, respectively) was achieved by treatment of Fosnutren 0.75 L.ha-1 and Humiforte 0.75 L.ha-1, respectively. Our results clearly showed that the consumption of chemical fertilizers could be reduced by using bio-stimulators as an attempt towards sustainable agriculture and reducing environmental pollution.