Showing 3 results for Ppo
Mansour Afshar Mohammadian, Shirin Kordi,
Volume 5, Issue 4 (3-2019)
Abstract
Nowadays, the use of a wide range of medicinal herbs such as saffron and its aromatic compounds is increasingly being regarded as natural sources of antioxidant properties. In addition to saffron stigma, saffron petal is a rich herbal source of antioxidant compounds. The present study was conducted in a completely randomized design with three replications to study some of the enzymatic and non-enzymatic antioxidants of two species of wild saffron in Guilan Province compared with agronomic saffron (C. sativus). The results of this study showed that total phenol, flavonoids and anthocyanins in agronomic saffron were significantly higher than those in the other two species. The amount of flavonel in C. speciosus and the level of antioxidant activity (DPPH) in C. caspius were significantly higher than other species. The level of PPO activity in C. sativus and C. speciosus was significantly higher than that in C. caspius. However, there was no significant difference in the level of POD activity among the three studied species. Therefore, according to the results of this study, petals of different species of saffron are good sources of non-enzymatic and enzymatic antioxidants and can be used as an available natural antioxidant in the food and pharmaceutical industries.
Faezeh Asheqian, Sedigheh Kelij, Naser Jafari,
Volume 6, Issue 4 (1-2020)
Abstract
The purpose of this research was to identify the structural adaptations in three populations of Convolvulus persicus L. on coastal areas in Mazandaran Province, whose populations of which are severely reducing due to the intense environmental stresses of the coastal zone. In general, annular collenchyma, isobilateral mesophyll, amphiphloic siphonostele, abundant presence of laticiferous tubes, numerous druse crystals and the presence of periderm in rhizome can be introduced as the most important morpho-anatomical strategies utilized against harsh environmental conditions. Sari population was foud to have the most various structural toleration mechanisms in comparison with Babolsar and Nour populations. Few differences were observed in anatomical characteristics in the three populations of Convolvulus persicus as the evidence for high intra-specific phenotypic variability, leading to local adaptation and increase of the tolerability of plants against environmental changes.
Neda Tanbaccochi Moghadami, Homira Hatami Nemati, Gholamreza Dehghan, Seyyed Mehdi Banan Khojast, Hatam Ahmadi,
Volume 7, Issue 2 (7-2020)
Abstract
Malathion is one of the commonest type of organophosphate insecticide whose toxicity in human body is mainly considered to result from the induction of oxidative stress. The aim of this study was to investigate the antioxidant effect of Quercetin, a flavonoid compound, on the spatial memory and oxidative stress parameters during Malathion poisoning in male Wistar rats. This study was performed on nine groups, each of which consisted of eight male rats. Three days after intra-peritoneal injection of Quercetin, Malathion or a combination of these two drugs, the Moris Water-Maze apparatus was used to measure spatial memory parameters. The hippocampus was sampled and the oxidative stress parameters were measured in this area. Intra-peritoneal injection of Malathion (100 and 200 mg/kg) significantly reduced spatial memory parameters (P<0.01) and induced oxidative stress (P<0.001), whereas intra-peritoneal injection of quercetin (50 mg/kg) improved spatial memory in Malathion-poisoned experimental rats (P<0.05). Also, oxidative stress parameters in Malathion-treated groups showed a significant reduction in quercetin treatment (P<0.01). Quercetin was observed to restore the function of spatial memory and the level of oxidative stress parameters of the treated groups with Malathion to the normal level.
