Journal : Lebensmittel-Wissenschaft + Technologie , vol. 39 , p. 571–575 , 2006
Publisher : Academic Press
International Standard Numbers
Printed : 0023-6438
Electronic : 1096-1127
Publication type : Academic article
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Reducing sugars and free amino acids were analysed in slices from three potato cultivars before and after blanching (0-3 min). The potato crisps were deep fried at 185C for different times (3-8.5 min), and analysed for the concentration of acrylamide and moisture. Potato cultivar and temperature during processing were important parameters for acrylamide formation in potato crisp. The amount increased with increasing processing time. Blanching before deep-frying reduced the concentration of free asparagine and reducing sugar in the raw material. However, blanching as pre-treatment before deep-frying only reduced the concentration of acrylamide in the potato crisps for the cultivar Saturna in an effective way. There was not detected any relationship between the levels of asparagine in the different cultivars, before and after blanching, and the formation of acrylamide in the crisp products. However, it was shown that the content of reducing sugars determined the level of acrylamide after frying.