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Durum Wheat Bread： Old Sicilian Varieties and Improved Ones

Journal of Agricultural Science and Technology 2010年第4期4卷 10-17页

作者： G. Gallo M. Lo Bianco R. Bognanni G. Saimbene A. Orlando O. grillo R. Saccone G. Venora Stazione Consorziale Sperimentale di Granicoltura per la Sicilia via Bouganvillea 20 Caltagirone-CT 95041 Italy

In Mediterranean countries and particularly in Southern Italy, durum wheat （Triticum durum Desf.） is traditionally used for bread production. Market globalization has created, also in these regions, the spread of bread made with soft wheat flour （Triticum aestivum L.） standardizing this product flattening consumers＇ taste. With the aim of re-evaluating the old Sicilian local varieties, some landraces, chosen from the genebank of the institute, have been multiplied on farmers＇ fields to have enough material for making bread and for comparing this product with bread made by improved new varieties. Before milling in the pilot plant, the different wheats were characterized for their merceological indexes. The semolina obtained was analyzed for its chemical parameters. Rheological tests were conducted on dough and, finally, using standardized methods, one-variety breads were produced. On the bread slices, computerized image analysis was performed to measure colour and morphological parameters of crumb and crust. Sensory analysis, achieved through a descriptive profiling test, was conducted with trained judges using touch, fragrance and taste attributes for the different bread types. The different merceological, chemical and theological properties of raw material, grain and semolina were reflected in the breads prepared using old or improved varieties. Finally, the data obtained pointed out that the bread prepared with old and improved varieties can be clearly distinguished both by objective morphological parameters （image analysis） and by sensorial evaluations, for a potential traceability of typical product.

关键词： Durum wheat (Triticum durum Desf.) old and improved varieties biodiversity bread image analysis sensory evaluation

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