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Protein quality and content of nitrite, nitrate and metals in commercial samples of organic and conventional cold meats.

Barbieri, Giampiero; Macchiavelli, Leonello and Rivaldi, Patrizia (2008) Protein quality and content of nitrite, nitrate and metals in commercial samples of organic and conventional cold meats. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

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Summary

Twenty-six organic and conventional samples of cold meats were analysed and compared with respect to: meat protein quality, nitrite, nitrate and metal content to verify if organic products have any health advantage that may be attractive to consumers.
Proteins quality was assessed by sodium dodecyl sulphate-polyacrilamide gel electrophoresis (SDS-PAGE) and two-dimensional electrophoresis (2D EF). Nitrite and nitrate content were measured by the Griess reaction. Metals were detected by atomic absorption spectroscopy.
Electrophoretic data show differences in the quality of water-soluble proteins in uncooked products, in contrast to thermal treatment results, which revealed no differences between the organic and conventional products, although it is difficult to interpret these data.
Metal analyses show significantly higher levels of Fe, Zn, Ca, Se, and Cu in organic meat.
There was no significant difference detected in nitrite content, while nitrate was lower in organic compared to conventional salami. These results suggest that cooked organic meat products do not have any nutritional advantage over conventional ones, and that only seasoned products preserve the original quality of organic meat.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:organic cold meats, protein, additive,heavy metal intake
Subjects: Food systems > Food security, food quality and human health
Food systems
Research affiliation: Italy > Other organizations
International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 4 QUALITY OF ORGANIC PRODUCTS
Deposited By: Barbieri, Dr. Giampiero
ID Code:11600
Deposited On:06 Oct 2008
Last Modified:12 Apr 2010 07:35
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:This paper is published in the conference proceedings:
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. http://orgprints.org/13672 and http://orgprints.org/13674

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