Important factors to consider for acrylamide mitigation in potato crisps using pulsed electric fields

Publication date: Available online 16 May 2019Source: Innovative Food Science & Emerging TechnologiesAuthor(s): Jessica Genovese, Silvia Tappi, Wei Luo, Urszula Tylewicz, Silvia Marzocchi, Sara Marziali, Santina Romani, Luigi Ragni, Pietro RocculiAbstractThis preliminary study aimed to compare the application of pulsed electric field (PEF) with a traditional blanching as pre-treatments before frying for the mitigation of acrylamide content in potato crisps.Measuring the degree of cell disintegration index (po) and the changes in water electrical conductivity during washing of potato slices, PEF protocol and sample preparation scheme were optimized. Peeled potato slices (thickness 1.5 ± 0.2 mm) were subjected to PEF (1.5 kV/cm, pulse duration 10 μs, total treatment time 10 ms, pulse frequency 100 Hz) and to blanching (85 °C for 3.5 min) pre-treatments and then to washing in water, evaluating the reduction of acrylamide precursors (reducing sugars and free asparagine). After frying (175 °C, 3 min), product quality, in terms of colour, texture and acrylamide content were evaluated. Results showed that PEF promoted acrylamide precursors leaching followed by a reduction of the final acrylamide content of around 30%, significantly higher if compared to the reduction obtained with blanching, with only slight modifications of the final quality of the product, in terms of colour and texture.Industrial relevanceThe Commission Regulation (EU) 2017/2158 of 20 No...

Source: Innovative Food Science and Emerging Technologies - May 18, 2019 Category: Food Science Source Type: research