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| DEL-VECHIO-VIEIRA,GLAUCIEMAR; SANTOS,BRUNA C.S.; ALVES,MARIA SILVANA; ARAÚJO,AÍLSON L.A.; YAMAMOTO,CÉLIA H.; PINTO,MÍRIAM A.O.; KAPLAN,MARIA AUXILIADORA C.; SOUSA,ORLANDO V.. |
| ABSTRACT The present study was designed to investigate the antioxidant, antinociceptive and anti-inflammatory activities of the ethanol extract from Ageratum fastigiatum branches. Phytochemical screening and total phenol and flavonoid contents were determined. The antioxidant activity was assessed by 2,2-diphenyl-1-pycrilhydrazin (DPPH) and iron reducing power methods. The antinociceptive effect was evaluated using the acetic acid-induced writhing, formalin, hot plate and tail immersion assays; while the carrageenan-induced paw edema and pleurisy tests were performed to examine the anti-inflammatory activity against acute inflammation. The extract revealed the presence of flavonoids, tannins, coumarins, terpenes, sterols and saponins. Expressive levels of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ageratum fastigiatum; Analgesic; Anti-inflammatory; Antioxidant; Flavonoids; Total phenols. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401471 |
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| Maqui (Aristotelia chilensis Molina Stuntz, Elaeocarpaceae) is a Chilean native species which produces small berries that are mainly collected from the wild. The health benefits of maqui fruit are attributed to their high polyphenol content as well as their wide variety of anthocyanins and flavonols. One of the main factors that affect the polyphenol content in fruit is the maturity stage at harvest. The objective of this study was to determine total phenol and total anthocyanin content and antioxidant activity (by ferric reducing ability of plasma FRAP assay) of maqui fruits harvested at different fruit maturity stages from two wild populations located in Central Chile. Each maturity stage was determined by days from fruit set, berry size, and soluble... |
| Tipo: Journal article |
Palavras-chave: FRAP; Maturity stages; Ripening; Total anthocyanins; Total phenols. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400019 |
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| Mariangel,Emilia; Reyes-Diaz,Marjorie; Lobos,Walter; Bensch,Emma; Schalchli,Heidi; Ibarra,Pamela. |
| The antioxidant capacity (AC), total anthocyanins (TA) and total phenols (TP) of calafate fruit from four locations in southern Chile (El Blanco, Lonquimay, Mañihuales and Temuco) were determined using both the free radical 2.2-diphenyl-1-picrylhydrazyl (DPPH) method and the linoleic acid oxidation inhibition method as well as the pH-differential and Folin-Ciocalteu methods. Phenolic compounds were also identified using HPLC-DAD (High Performance Liquid Chromatography-Diode-Array Detection). The results showed that TP varied significantly according to the location. Mañihuales was noteworthy, with 34.9 mg of GAE g-1 dried fruit. The measured AC level depended on the methodology used, varying significantly between locations according to the DPPH results.... |
| Tipo: Journal article |
Palavras-chave: Antioxidants; Antioxidant capacity; Berberis; Flavonoids; Phenolic acids; Total phenols. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100014 |
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| El-Rokiek,K.G; Eid,R.A. |
| A Petri dish assay was carried out for screening different concentrations of aqueous extracts of fresh and dry leaves of Eucalyptus citriodora on germination and seedling growth of wild oat weed (Avena fatua). Seed germination, root and shoot length of wild oat exhibited different degrees of inhibition according to the concentration of the aqueous extract. Maximum inhibitions of germination percentage, root and shoot length were recorded when using 25% fresh leaf extract. Based on this preliminary work (Petri dish assay), studies were conducted under greenhouse conditions at the National Research Center, Egypt, in the two winter seasons of 2006/2007 and 2007/2008 to evaluate the effects of foliar and soil treatments of aqueous extracts of Eucalyptus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aqueous extract; Herbicide; Phytotoxic; Total phenols; Tralkoxydim. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582009000500002 |
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| Álvarez,Gloria Edith Guerrero; Gutiérrez,Ana María López; Valencia,Katalina Ángel; Mossos,Paula Sandoval; Rozo,Diana Lucía Suárez; Hurtado,Nathalia Cardona. |
| Abstract This research aimed at performing the molecular characterization of commercial Papelillo avocado (Persea americana cv Lorena) cultivars from the municipality of Marsella (Risaralda, Colombia), as well as the physicochemical analysis and antioxidant activity assessment of the pulp and seed. An evaluation of 50 individuals among commercial varieties and possible patterns was performed using 17 microsatellite markers. Proximate analysis of the pulp was performed, and the fatty acid profile of oils, the antioxidant activity by the DPPH and FRAP methods, and the total phenolic content were evaluated. From the cluster analysis, Dice index, and Principal Coordinates Analysis, it became evident that all the individuals showed a tendency to group by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidants; DNA; Fatty acids; Microsatellites; Persea americana Mill.; Total phenols. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000500902 |
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