Influence of the type of fat and air humidity on chosen properties of the lipid fraction in the process of baking shortbread pastries
Keywords:Acid value, Conjugated dienes and trienes, DSC, Peroxide value
The results from his study reveal that the type of fat used during the baking of shortbreads had a noticeable influence on the properties of lipid fractions as well as the correlation among these properties (acid value, peroxide value, conjugated dienes and trienes contents). For low-trans fats, the correlation between acid value and peroxide value was inversely proportional; for transcontaining fats this correlation was directly proportional. An increase in air humidity during baking caused a decrease in the melting temperature of the fractions of fats used in the process, compared to fats from pastries baked in dry air. This may be indicative of a product with a high degree of unsaturation in the lipid fraction.
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