نتایج جستجو برای: non-enzymatic antioxidant systems
تعداد نتایج: 2512727 فیلتر نتایج به سال:
such as the process of cellular respiration, which is scavenged by enzymatic and non-enzymatic antioxidant systems. Intake of antioxidants from food sources has always been considered in nutrition research. Therefore, the aim of the present study was to investigate antioxidant effects of crocin on the expression profile of genes involved in the enzymatic antioxidant systems in muscle cells. Ma...
background & aim: when the level of free radicals is increased and also when both the enzymatic systems and low molecular antioxidants are not sufficient to protect the organism, it seems necessary to get antioxidants from external sources. this study aimed to evaluate the antioxidant potential of different parts of catharantus roseus experimental: the antioxidant potential of ethanol extra...
Heavy metals reduce the plant growth and adversely affect plant performance potential. Heavy metals also induce the formation of reactive oxygen species leading to cell damage. Plants deal with heavy metal stress by activating enzymatic and non-enzymatic antioxidant systems such as Superoxide Dismutase which converts superoxide anion to hydrogen peroxide. Then Peroxidase and Catalase convert hy...
the etiopathogenesis of alzheimer's disease (ad) is still unclear. however, long-term oxidative stress is believed to be one of the major contributing factors in progression of neuronal degeneration and decline of cognitive function in ad. in order to assess the presence of oxidative stress in ad, we examined the enzymatic activities of the erythrocyte cu-zn superoxide dismutase (cu-zn sod), g...
Melatonin has important roles in many growth and stress-related responsive processes in plants and algae. In this study, the mediating role of 100 and 500 µM melatonin on photosynthetic pigments and non-enzymatic antioxidant responses of microalga, Chlorella vulgaris to gamma irradiation stress has been studied. The result showed that the alga treated with 100 µM had a stable amount of chloroph...
the antioxidant activity and phytoconstituents of the hydromethanolic extract of litchi chinensis (helc) fruit was explored in the present study. the antioxidant potential of extract has been evaluated using several antioxidant models and results were compared to standards. fruit extract showed effective reducing power and free radical scavenging activity in a dose-dependent manner. in case of ...
Deschampsia antarctica Desv. is one of two vascular plants that live in the Maritime Antarctic Territory and is exposed to high levels of ultraviolet-B (UVB) radiation. In this work, antioxidant physiology of D. antarctica was studied in response to UVB induced oxidative changes. Samples were collected from Antarctica and maintained in vitro culture during 2 years. Plants were sub-cultured in a...
The antioxidant activity and phytoconstituents of the hydromethanolic extract of Litchi chinensis (HELC) fruit was explored in the present study. The antioxidant potential of extract has been evaluated using several antioxidant models and results were compared to standards. Fruit extract showed effective reducing power and free radical scavenging activity in a dose-dependent manner. In case o...
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-...
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