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Volatile composition and aroma compounds of Idiazabal PDO cheeses made in winter and spring were compared. In these seasons flock management differs: concentrate and conserved forages are fed in winter whereas a part-time grazing system is used in spring. Commercial cheeses from ten farmhouses were analysed during ripening. Acids, carbonyl compounds, esters, and alcohols were the main volatiles in...
HS-SPME analysis of terpenes does usually have inherent quantification problems when working with complex samples, especially due to the matrix effect of the substrate or the calibration solution. Three different terpene carrier matrices were compared: methanol, synthetic oil and milk fat obtained by centrifugation from milk cream. Considerable differences in calibration sensitivity parameters were...
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