Agricultural Research Council Research Center for Soil Plant System

Italy

Agricultural Research Council Research Center for Soil Plant System

Italy
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Marconi S.,Agricultural Research Council Research Center for Soil Plant System | Beni C.,Agricultural Research Council Research Center for Soil Plant System | Ciampa A.,Agricultural Research Council Research Center for Soil Plant System | Diana G.,Agricultural Research Council Research Center for Soil Plant System | And 4 more authors.
Journal of Food Quality | Year: 2010

Arsenic (As) is a highly toxic element and its presence in food is a matter of concern for the well-being of both animals and humans. Arsenic-contaminated groundwater is used in agriculture to irrigate crops for food and animal consumption with a potential contamination of the food chain. The purpose of this study was the evaluation of arsenic effect on radish tuber (Raphanus sativus. L.). Experimental plots with sandy and clay-loamy soil were cultivated with radish and treated with three different concentrations of As water solution: 19, 44 and 104 μg/L. Magnetic resonance imaging was used to visualize the tuber structural changes, and the content of elements and the As amount were evaluated by inductively coupled plasma atomic emission spectroscopy. The data obtained demonstrate that As contamination in radish tuber is underlined with the dual approach. © 2010 Wiley Periodicals, Inc.


Ciampa A.,Agricultural Research Council Research Center for Soil Plant System | Renzi G.,Agricultural Research Council Research Center for Soil Plant System | Taglienti A.,Agricultural Research Council Research Center for Soil Plant System | Sequi P.,Agricultural Research Council Research Center for Soil Plant System | Valentini M.,Agricultural Research Council Research Center for Soil Plant System
Journal of Food Quality | Year: 2010

The chemical composition of coffee has been widely investigated, focusing the attention both on main components and trace compounds. Most of these studies have been performed by using liquid and gas chromatography, eventually combined with mass spectroscometry. These techniques, although straight and effective, are time demanding due to the sample pretreatments. Here, we propose high-resolution-magic-angle spinning nuclear magnetic resonance spectroscopy (HR-MAS NMR), a system capable of acquiring highly resolved NMR spectra of gel-like and suspension samples. This approach allowed us to determine the chemical composition of coarsely ground coffee beans of two varieties: Arabica and Robusta. Variation of the concentration of relevant species was monitored as a function of roasting temperature, from green beans to completely roasted. The HR-MAS NMR tool demonstrated to be very powerful for quick chemical composition determination, opening up possibilities for novel applications of this approach in food quality control. © 2010 Wiley Periodicals, Inc.


PubMed | Agricultural Research Council Research Center for Soil Plant System
Type: Journal Article | Journal: Biological trace element research | Year: 2011

The present study investigated the effects of using arsenic (As) contaminated irrigation water in Lactuca sativa L. cropping. Two different arsenic concentrations, i.e., 25 and 85 g L(-1) and two different soils, i.e., sandy and clay loam, were taken into account. We determined the arsenic mobility in the different soil fractions, its amount in groundwater, and the phytotoxicity and genotoxicity. Nuclear magnetic resonance (NMR) and inductively coupled plasma (ICP) were used to assess the lettuce metabolic profile changes and the arsenic uptake by the plant, respectively, as a function of the various conditions studied, i.e., As content and type of soil. Data indicated that at both concentrations in sandy soil, arsenic is in part quickly leached and thus present in groundwater and in part absorbed by the vegetable, being therefore readily available for assimilation by consumption. NMR results reported a large modification of the metabolic pattern, which was depending on the pollutant amount. In clay loam soil, the groundwater had a low As content with respect to sandy soil, and NMR and ICP performed on the lettuce did not reveal severe changes related to As, most likely because the metalloid is bound to the colloidal fraction.

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