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| Borderes,Josiane; Costa,Alessandra; Guedes,Alessandro; Tavares,Lorena Benathar Ballod. |
| The aim of this work was to study the production of compounds with antioxidant activity by Pycnoporus sanguineus when cultivated in submerged fermentation using a potato dextrose broth plus peptone medium. The study evaluated the biomass production, glucose consumption, variation of medium pH and antioxidant activity. The antioxidant potential was tested through the DPPH method and β-carotene / linoleic acid system with extracts obtained from the mycelium at different times of cultivation (5, 10, 15, 20, 25 and 30 days). Maximum kinetic values of specific growth rate (0.289 day-1), biomass productivity (0.698 g.L-1.day-1) and the yield of glucose conversion into biomass (26.24 g.g-1) were obtained during the exponential growth phase. The highest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Basidiomycetes; Submerged culture; Kinetics; Antioxidant compounds. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000600012 |
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| Rosa,Cassia Inês Lourenzi Franco; Clemente,Edmar; Oliveira,Dalany Menezes; Todisco,Katieli Martins; Costa,Jose Maria Correia da. |
| ABSTRACT The aim of this work was to analyse the effects of 1-MCP upon the post-harvest quality of the orange cv. Pera stored for 45 days at a temperature of 7 ºC. The fruit was divided into four treatments, and then submitted to the application of three concentrations of 1-methylciclopropene (0.1, 0.5 and 1.0µL.L-1) for a period of 12 hours.The fruitwas again then stored at a temperature of 7 ºC. The rate of respiration was determined, together withcoloration of the epidermis, SS, TA, ratio, vitamin C, total carotenoids, phenolic compounds, total and reducing sugars, weight loss and juice yield. The data were submitted to analysis of variance (F-Test), and the averages were analysed by regression (P≤0.05). According to the results, it could be seen that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis L; Osbeck; Chemical characteristics; Antioxidant compounds; Respiration. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000400624 |
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| FERNANDES,Kamila Rangel Primo; BITTERCOURT,Paulo Senna; SOUZA,Afonso Duarte Leão de; SOUZA,Antonia Queiroz Lima de; SILVA,Felipe Moura Araújo da; LIMA,Emerson Silva; ACHO,Leonard Domingo Rosales; NUNOMURA,Rita de Cássia Saraiva; TEIXEIRA,Ana Frazão; KOOLEN,Hector Henrique Ferreira. |
| ABSTRACT Virola venosa, popularly known in Brazil as ucuuba-da-mata, occurs naturally in the Amazon region and has potential to provide useful natural compounds, as already known for other Virola species. Therefore, the objective of this study was to determine the chemical composition of bark and leaf extracts of V. venosa, and to test the antioxidant capacity and α-glucosidase inhibition potential of their compounds. Polar extracts showed to be more active in both assays, therefore a bioactivity-guided fractionation was performed to identify the compounds that were responsible for the recorded activities. Using a combination of LC-MS/MS analysis and isolation with NMR identification, eight phenolic compounds were identified. Assays with pure compounds of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Α-glucosidase inhibition; Antioxidant compounds; Ferulic acid; Amazon. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000100048 |
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