M. Farzami Sepehr; M. Ghorbanli; M. Mirbagheri
Abstract
Phenolic compounds are one of the most important factors in olive, which has been considered greatly. Phenols have pharmacological characteristics and contain natural antioxidants in olive. Oleuropein is one of the most abundant and important phenolic compounds in fruits and leaves of olive, which causes ...
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Phenolic compounds are one of the most important factors in olive, which has been considered greatly. Phenols have pharmacological characteristics and contain natural antioxidants in olive. Oleuropein is one of the most abundant and important phenolic compounds in fruits and leaves of olive, which causes the bitter taste of olive. Oleuropein is a heterosidic ester of elenolic acid and 3,4-dihydroxy phenyl ethanol. It is worth mentioning that the use of this compound has a significant role in health. In this study, the amount of existing compounds in different cultivars of olive (Olea europaea L.) was studied during harvesting season in two regions of Rudbar and Kazeroun, and oleuropein was extracted with methanol and its amount was determined by High Performance Liquid Chromatography (HPLC). According to the conducted researches, it was found that the highest composition rate of fruit oleuropein was recorded for yellow olive in Fars (34.31 mg/g) and for Fyshmy olive in Rudbar (30.25 mg/g). However, the lowest composition rate of fruit oleuropein was recorded for Mishen olive in Fars (9.55 mg/g) and for Lechyo olive in Rudbar (10.23 mg/g). Based on the provided data, it can be concluded that more edibility of Rudbar olives may be due to the lower level of oleuropein compound, resulting in less bitterness. Notably, the medicinal usage of different types of Fars olives is due to the higher level of oleuropein compounds.
M. Ghorbanli; A. Kiapour
Abstract
Portulaca oleracea L. belongs to Portulacaceae order. From the physiological point of view, P. oleracea L., generally known as ragwed, has a very high tolerance and compatibility to the environments polluted with salts or heavy metals. It is considered as a suitable species in planting as well as in ...
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Portulaca oleracea L. belongs to Portulacaceae order. From the physiological point of view, P. oleracea L., generally known as ragwed, has a very high tolerance and compatibility to the environments polluted with salts or heavy metals. It is considered as a suitable species in planting as well as in refining soil and environment from these kinds of stresses. According to these contexts and in order to show the effects of two heavy metals, lead and copper, on malondialdehyde, proline and antioxidant enzymes activity some experiments were performed in a completely randomized design. For this purpose, plants were planted in sterile bed, leca, irrigated with Hogland nutrient solotion. Treatments included different concentrations of Pb (NO3)2 and CuSO4.5H2O (0, 10,50,100,500,1000 and 1500 µM) with three replications. After ten days of treatment, plants were harvested for experiments. According to the results, an increased absorption of lead and copper was recoreded at high concentrations compared to the control treatment. The amount of atomic absorption of these two elements in roots was more than that of shoots. Stress increased significantly at high concentrations compared to the control. The amount of proline showed a significant upward trend in both lead and copper stress as well as in both roots and shoots. Peroxidase activity showed a significant upward trend in both lead and copper stress as well as in both shoots and roots while a significant downward trend was recorded for catalase activity. In general, a higher amount of malondialdehyde, proline and peroxidase activity was obtained in root samples comperd to shoot samples, indicating the role of root as the main accumulator of heavy metals, lead and copper. The lower catalase activity in roots compared to shoots proved enzyme sensitivity towards high Pb and Cu accumulation in roots.
M. Ghorbanli; A. Alibabaee; M. Payvandi
Abstract
Hypericum perforatum L. is a valuable medicinal species. The plant geneus includes 17 species in Iran, but H. perforatum is the only valuable species.The species plays an essential role in the treatment of depression. In this study, Hypericum perforatum was treated with different concentrations of molybdenum ...
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Hypericum perforatum L. is a valuable medicinal species. The plant geneus includes 17 species in Iran, but H. perforatum is the only valuable species.The species plays an essential role in the treatment of depression. In this study, Hypericum perforatum was treated with different concentrations of molybdenum including (control, 0.1, 0.4, 0.8, 1.6 µΜ) in Hoagland solution at 6.8 pH and then samples were used to measure biochemical parameters. Molybdenum significantly increased proline content. The shoot catalase and ascorbate peroxidase activities increased in all treatments of molybdenum, but in root, it was reduced in higher concentrations. Shoot peroxidase activities increased by treatments of molybdenum, except at a concentration of 0.8µΜ. The increase in peroxidase activity was also observed in roots but it was reduced at higher concentrations. The malondealdehyde and molybdenum content increased in higher concentrations of molybdenum. Molybdenum content increased by increasing treated molybdenum. Therefore, molybdenum stress increased the proline content and peroxidase, catalase and ascorbate peroxidase activities, and toxicity symptoms were observed in high concentrations of molybdenum as lipid peroxidation. Data were analyzed by SPSS and mean comparisons was performed by Duncan's multiple range test. In each experiment, 3 replications were used.
