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| Ah-Hen,Kong; Fuenzalida,Carolina; Hess,Susan; Contreras,Andrés; Vega-Gálvez,Antonio; Lemus-Mondaca,Roberto. |
| Colored potatoes (Solanum tuberosum L.) provide a natural source of phytochemicals that help reduce the risk of diseases. However, there is a lack of information on the degree of variation of the antioxidant activity and polyphenolic contents of these native potatoes. Thus, the antioxidant activity (AA) and total phenolic content (TPC) of native Chilean potatoes were determined. Twelve potato landrace clones collected from established cultivations on Chiloe Island and Valdivia were selected. Total phenolic content and AA were compared with two commercial varieties, Shepody and Desirée. Total phenolic content was determined by the Folin-Ciocalteu method, and β-carotene bleaching was used to compare AA. The TPC varied in the peeled potato samples... |
| Tipo: Journal article |
Palavras-chave: Chilean potatoes antioxidant activity total phenolics Folin-Ciocalteu β -carotene. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100001 |
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| Scala,Karina Di; Vega-Gálvez,Antonio; Ah-Hen,Kong; Nuñez-Mancilla,Yissleen; Tabilo-Munizaga,Gipsy; Pérez-Won,Mario; Giovagnoli,Claudia. |
| The aim of this study was to evaluate the influence of high hydrostatic pressure (150, 250, 350, 450, and 550 MPa), applied for 5 minutes, on antioxidant capacity, total phenolic content, color, firmness, rehydration ratio, and water holding capacity of aloe vera gel stored for 60 days at 4 °C. The analyzed properties of the pressurized gel showed significant changes after the storage period. The highest value of total phenolic content was found at 550 MPa. However, a decrease in the antioxidant capacity was observed for all pressurized gel samples when compared to the control sample (p < 0.05). The smallest changes in product color were observed at pressure levels between 150 and 250 MP. The application of high hydrostatic pressure resulted in lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant capacity; Total phenolics; Quality; Aloe vera. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000100009 |
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