نتایج جستجو برای: β-carotene bleaching tests
تعداد نتایج: 520720 فیلتر نتایج به سال:
The need for antioxidant agents, which can prevent oxidative stress, has become a major priority. Saharan plants could constitute a reservoir of effective biomolecules useful as antioxidants. Genista saharae, wich is anendemic plant of Algeria,is a leafless spontaneous fabaceae called "Tellegit" by local people. As it is known to be a source of chemical compounds which are characterized by anti...
The essential oil composition of Rhus cotinus L. (syn. Cotinus coggygria Scop.; Family: Anacardiaceae), was analyzed by GC and GC-MS. The in vitro antioxidant activity was assessed by β-carotene bleaching test, reducing power, DPPH radical scavenging and inhibition of lipid peroxidation methods. A total of 30 compounds were identified with the dominance of monoterpenes (65.9%) viz. β-Pinene, ca...
It has been investigated the in vitro antioxidant properties of ethanol extracts of the contained-allantoin plants in this study. Contained-allantoined plant samples Plantago lanceolata, Plantago major, Robinia pseudoacacia, Platanus orientalis and Aesculus hippocastanum were tested at different concentrations. The antioxidant activities of plant samples were analysed by 1,1- diphenyl-2-picrylh...
It has been investigated the in vitro antioxidant properties of ethanol extracts of the contained-allantoin plants in this study. Contained-allantoined plant samples Plantago lanceolata, Plantago major, Robinia pseudoacacia, Platanus orientalis and Aesculus hippocastanum were tested at different concentrations. The antioxidant activities of plant samples were analysed by 1,1- diphenyl-2-picrylh...
it has been investigated the in vitro antioxidant properties of ethanol extracts of the contained-allantoin plants in this study. contained-allantoined plant samples plantago lanceolata, plantago major, robinia pseudoacacia, platanus orientalis and aesculus hippocastanum were tested at different concentrations. the antioxidant activities of plant samples were analysed by 1,1- diphenyl-2-picrylh...
The present study was designed to examine the chemical composition and antioxidant activity of Bunium incrassatum extracts prepared in five different solvents with increasing polarities. RP-HPLC analysis resulted identification 12 phenolic compounds, including 8 acids (caffeic acid, ellagic ferulic gallic rosmarinic sinapic syringic vanillic acid) 4 flavonoids (catechin, hesperetin, luteolin, q...
Background and Objectives: Beta-carotene was prepared from Azolla by Lejeune et al. (2000). Beta carotene production from Azolla filiculoides in the Anzali wetland has not been investigated in Iran so far. The present project was aimed at determining the content, quality, and purity of β-carotene extracted from Azolla filiculoides in the Anzali Wetland, and comparing it with synthetic β-caroten...
Arrabidaea chica leaf extract has been used by people as an anti-inflammatory and astringent agent as well as a remedy for intestinal colic, diarrhea, leucorrhea, anemia, and leukemia. A. chica is known to be a good producer of phenolics. Therefore, in the present study, we investigated its antioxidant activity. The phenolic composition of A. chica leaves was studied by liquid chromatography co...
the present study explores the chemical constitution and antioxidant activity of the essential oils of the aerial parts of artemisia dracunculus l. and the flower heads of matricaria chamomilla l. gc-ms analysis revealed the presence of (z)-anethole (51.72%), (z)-β-ocimene (8.32%), methyleugenol (8.06%), limonene (4.94%) and linalool (4.41%) in artemisia dracunculus and (e)-β-farnesene (24.19%)...
butyl-hydroxytoluene (bht) is one of the major synthetic antioxidants with a wide range usage. replacement of artificial antioxidants with natural antioxidants is highly considered. in this research, the antioxidant activity of juniperus excelsa was investigated by using reducing power, dpph radical scavenging and inhibition of lipid peroxidation. also, the amounts of phenolic and flavonoid com...
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