Consulta: subjectFacets:"Free radical scavenging"
Registros recuperados: 4
Data/hora: 04/06/2024 16:04:49

Butein imparts free radical scavenging, anti-oxidative and pro-apoptotic properties in the flower extracts of Butea monosperma
Provedor de dados: 47
Autores: Sehrawat,Anuradha; Kumar,Vijay.
The flower of Butea monosperma (Lam.) (Fabaceae) has been used in traditional Indian medicine in the treatment of many ailments including liver disorders. To understand the pharmacological basis of its beneficial effects, the extracts of dried flowers in water, methanol, butanol, ethyl acetate and acetone were evaluated for free radical scavenging and pro-apoptotic activities in cell cultures (human hepatoma Huh-7 cell line and immortalized AML-12 mouse hepatocytes). Butrin and butein -the active constituents of flower extracts- were used as reference molecules. The levels of cell injury markers like lactate dehydrogenase, glutathione and lipid peroxidation and primary antioxidant enzymes glutathione S-transferase and catalase were also measured. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Butrin; Cytotoxicity; Hepatoprotection; Methanol extract; Free radical scavenging.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452012000200003

Assessment of the phytochemical constituents and antioxidant activity of a bloom forming microalgae Euglena tuba
Provedor de dados: 48
Autores: Chaudhuri,Dipankar; Ghate,Nikhil Baban; Deb,Shampa; Panja,Sourav; Sarkar,Rhitajit; Rout,Jayashree; Mandal,Nripendranath.
BACKGROUND: Unstable generation of free radicals in the body are responsible for many degenerative diseases. A bloom forming algae Euglena tuba growing abundantly in the aquatic habitats of Cachar district in the state of Assam in North-East India was analysed for its phytochemical contents, antioxidant activity as well as free radical scavenging potentials. RESULTS: Based on the ability of the extract in ABTS•+ radical cation inhibition and Fe3+ reducing power, the obtained results revealed the prominent antioxidant activity of the algae, with high correlation coefficient of its TEAC values to the respective phenolic and flavonoid contents. The extract had shown its scavenging activity for different free radicals and 41.89&amp;#8201;±&amp;#8201;0.41...
Tipo: Journal article
Palavras-chave: Euglenoid; Phytochemicals; Free radical scavenging; Antioxidant; Reducing power.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100024

Free radical scavenging and antimicrobial properties of extracts of wild mushrooms
Provedor de dados: 58
Autores: Oyetayo,V.O.
Antioxidant and antimicrobial potentials of extracts obtained from four wild mushrooms, Termitomyces clypeatus (TCE), Termitomyces robustus (TRE), Lentinus subnudus (LSE) and Lenzites species (LZE) collected in Nigeria were investigated. LSE and LZE displayed good scavenging activity against 2, 2-Diphenyl-1-Picrylhydrazyl (DPPH) and ferrous ion radicals at concentration of 2 mg/mL. However, TRE and TCE exhibited better superoxide anion scavenging effect at 2 mg/mL. All extracts (TCE, TRE, LSE and LZE) had comparable scavenging effect on hydroxyl radicals as butylated Hydroxytoluene (BHT) used as control. Moreover, extracts from the wild mushrooms were able to inhibit the growth of all indicator organisms at concentrations between 12.5 mg/mL to 100 mg/mL....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wild mushrooms; Antimicrobial activity; Free radical scavenging.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000200031

Antioxidant and cytotoxic activity of Tecoma stans against lung cancer cell line (A549)
Provedor de dados: 60
Autores: Robinson,Jayachandran Philip; Suriya,Kumaresan; Subbaiya,Ramasamy; Ponmurugan,Ponnusamy.
ABSTRACT Human have been constantly using plants and plant products to overcome many diseases. The antioxidant property of the plant sources is studied to obtain an efficacious drug against cancer. The objectives of the present study is to evaluate the antioxidant and cytotoxic activity of the Tecoma stans extracts against lung cancer cell line in comparison with vincristine drug. The antioxidant activity was studied using the standard DPPH assay and the cytotoxic activity using MTT assay. DPPH assay results show that methanolic extract of T. stans in higher concentration show better antioxidant potential than the standard L-ascorbic acid. They exhibited strong antioxidant potential at 20 µg/mL concentration. The absorbance at 517 nm showed that in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tecoma stans/extract/cytotoxicity; Tecoma stans/extract/antioxidant activity; Free radical scavenging; Plant extracts; Lung cancer cell line/study/drugs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300605