Redirigiendo al acceso original de articulo en 17 segundos...
ARTÍCULO
TITULO

Influence of the growing region, quality classification and harvest year on the ORAC (Oxygen Radical Absorbance Capacity) index of Chilean Cabernet Sauvignon red wines

Raquel Bridi    
Sergio Lobato    
Camilo López-Alarcón    
Eduardo Lissi    

Resumen

In the present work, we studied the effect of the growing region (IV, Metropolitan or VI - VII regions), quality classification (?Varietal?, ?Reserva?, and ?Gran Reserva?) and harvest year (2000-2012) on the total phenolic content and antioxidant capacity of thirty-six Chilean Cabernet Sauvignon red wine samples. The Folin-Ciocalteu (FC) and (Oxygen Radical Absorbance Capacity) ORAC methods, employing fluorescein and pyrogallol red as probes, were applied to establish the properties of the wine samples. The obtained results show a strong dependence at of the three indexes on the grape growing region, with higher values obtained in wines from the IV region. These results can be related to the climatic characteristics of this Region, which include dry weather and large temperature differences (nearly 20 °C) between day and night. En el presente estudio se evaluó el contenido de compuestos fenólicos y la actividad antioxidante de treinta y seis Cabernet Sauvignon vinos tintos chilenos de diferentes zonas geográficas (IV, Metropolitana y VI - VII regiones), distintos tipos de guarda (?Varietal?, ?Reserva?, and ?Gran Reserva?) y diferentes años de cosecha (2000-2012). El contenido total de fenoles fue determinado por el método de Folin-Ciocalteau (FC) y la actividad antioxidante fue evaluada por medio del ensayo ORAC (Oxygen Radical Absorbance Capacity) utilizando fluoresceína y rojo de pirogalol como moléculas blanco. Los resultados indicaran una fuerte influencia de la zona geográfica de cultivo en los tres índices estudiados, con valores superiores en los vinos procedentes de la IV región. Este resultado puede ser explicado en base a las características climáticas de esta región, la que se caracteriza por tiempo seco y diferencias de temperatura entre día y noche que superan los 20 grados.

 Artículos similares

       
 
Reagan W. Hejl, Matthew M. Conley, Desalegn D. Serba and Clinton F. Williams    
The development of management plans which lead to water efficient landscapes is a growing need in the turfgrass community. While deficit irrigation as a scheduling method can improve water conservation, more information is desired on how to best leverage... ver más
Revista: Agronomy

 
Wolfgang Jarausch, Miriam Runne, Nora Schwind, Barbara Jarausch and Uwe Knauer    
Apple proliferation (AP) is an economically important disease in many apple-growing regions caused by ?Candidatus Phytoplasma mali? which is spread by migrating psyllid vectors on a regional scale. As infected trees in orchards are the only inoculum sour... ver más
Revista: Agronomy

 
Xiaoshun Zhao, Zhuangzhuang Hou, Jizong Zhang, Huali Yu, Jianjun Hao and Yuhua Liu    
In order to improve the quality of transplanting devices and solve the problems of the poor effect on soil moisture conservation and more weeds easily growing due to the high mulching-film damage rate with an excessive number of hole openings, we develop... ver más
Revista: Agriculture

 
Anna Kozielec, Jakub Piecuch, Kamila Daniek and Lidia Luty    
In this article, the impact of the Russia?Ukraine conflict on food security in the Middle East and North Africa (MENA) region is analyzed. With Ukraine being recognized as one of the major global grain producers and exporters, the conflict is seen as pos... ver más
Revista: Agriculture

 
Victoria Kamenchuk, Boris Rumiantsev, Sofya Dzhatdoeva, Elchin Sadykhov and Azret Kochkarov    
Urban vertical farming is an innovative solution to address the increasing demand for food in densely populated cities. With advanced technology and precise monitoring, closed urban vertical farms can optimize growing conditions for plants, resulting in ... ver más
Revista: Agronomy