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| Montenegro,Gloria; Fredes,Carolina; Mejías,Enrique; Bonomelli,Claudia; Olivares,Luis. |
| En Chile, la contaminación por metales pesados se produce principalmente cerca de las explotaciones de la minería cuprífera en las regiones del norte y centro del país. En éstas se han encontrado suelos agrícolas contaminados por metales pesados ubicados a varios kilómetros de la fuente de contaminación. El objetivo de este estudio fue analizar los contenidos de Fe, Cu, Mn, Zn, Cr, Cd y Pb y variables químicas (pH, CE, MO y CIC) de suelos cercanos a un relave de Cu ubicado en el norte del país. La determinación de metales pesados disponibles se realizó mediante AAS, y los metales pesados totales mediante ICP-OES. Los suelos fueron agrupados en tres sectores de acuerdo a la cercanía del relave, el curso de un estero y el sentido del viento. El Cu fue el... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Análisis de componentes principales y suelos contaminados; Cobre; Metales pesados. |
| Ano: 2009 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952009000400009 |
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| Martin,María José; Fredes,Carolina; Nuñez,Gabriel; Ginocchio,Rosanna; Montenegro,Gloria. |
| The color of honey has special relevance in the international market, as different markets demand specific colors of honey. Chile has very diverse native and exotic flora, which are used by bees (Apis mellifera) to produce a range of honey types, including honeys of different colors. In this context, determining the relationships between color and botanical origin among Chilean honeys is very relevant. The objectives of the present study were to compare three methodologies for determining color in Chilean honeys (Pantone®, optical density (OD), and Pfund) and to define the relationship between color and botanical origin of the characterized honeys. The most common honeys from the Libertador Bernardo O'Higgins Region (VI Region) of Chile were Galega... |
| Tipo: Journal article |
Palavras-chave: Honey markets; Melissopalynological analysis; Optical density; Pantone®; Pfund. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000300014 |
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| Fredes,Carolina; Montenegro,Gloria; Zoffoli,Juan Pablo; Santander,Francisca; Robert,Paz. |
| In the last 10 years, interest in research on polyphenol-rich fruit species has increased due to the potential health benefits of these species, mainly attributed to their high anthocyanin content and antioxidant activity. Six polyphenol-rich fruit species (blueberries, raspberries, blackberries, strawberries, pomegranates and maqui berries) were harvested at the same maturity stage during the same growing season and were compared according to their total phenolic (Folin-Ciocalteu method) and total anthocyanin (pH differential method) contents and antioxidant activity using ferric-reducing antioxidant power (FRAP assay) and 2,2-diphenylpicrylhydrazyl (DPPH) radical scavenging capacity methods. With the results of this study, the polyphenolic status of the... |
| Tipo: Journal article |
Palavras-chave: Berries; DPPH; FRAP; Maqui; Pomegranate. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000100005 |
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| Montenegro,Gloria; Fredes,Carolina. |
| In this report, 61 honey samples were collected in beehives located between IV and X Administrative Region of Chile. We focussed the analysis in risky chemical elements for human health and in the main chemical elements found previously in Chilean honeys. The analysis of Al, Sr, Cu, Fe, Mn and Zn were done by wet acid digestion method by ICP-OES. Lotus pedunculatus and Eucryphia cordifolia honeys showed the highest Al contents related to their geographical origin (Bío-Bío and Los Lagos Regions). The principal component analysis did not show groups of honeys with the some floral origin and a typical chemical element profile. |
| Tipo: Journal article |
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| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432008000100014 |
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