Exploring the effects of pulsed electric field processing parameters on polyacetylene extraction from carrot slices.
The effects of various pulsed electric field (PEF) parameters on the extraction of polyacetylenes from carrot slices were investigated. Optimised conditions with regard to electric field strength (1-4 kV/cm), number of pulses (100-1500), pulse frequency (10-200 Hz) and pulse width (10-30 μs) were identified using response surface methodology (RSM) to maximise the extraction of falcarinol (FaOH), falcarindiol (FaDOH) and falcarindiol-3-acetate (FaDOAc) from carrot slices. Data obtained from RSM and experiments fitted significantly (p < 0.0001) the proposed second-order response functions with high regression coefficients (R2) ranging from 0.82 to 0.75. Maximal FaOH (188%), FaDOH (164.9%) and FaDOAc (166.8%) levels relative to untreated samples were obtained from carrot slices after applying PEF treatments at 4 kV/cm with 100 number of pulses of 10 μs at 10 Hz. The predicted values from the developed quadratic polynomial equation were in close agreement with the actual experimental values with low average mean deviations (E%) ranging from 0.68% to 3.58%.
IRTA, XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Lleida 25003, Catalonia, Spain. Ingrid.Aguilo@irta.cat.
Ingrid
I
Aguiló-Aguayo
Department of Food Biosciences, Teagasc Food Research Centre Ashtown, Dublin 15, Ireland.
Corina
C
Abreu
Department of Food Biosciences, Teagasc Food Research Centre Ashtown, Dublin 15, Ireland.
Mohammad B
MB
Hossain
IRTA, XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Lleida 25003, Catalonia, Spain.
Rosa
R
Altisent
School of Agriculture and Food Science, University College Dublin, Dublin 4, Ireland.
Nigel
N
Brunton
Food Technology Department, University of Lleida, XaRTA-Postharvest, Agrotecnio Center, Rovira Roure 191, Lleida 25198, Catalonia, Spain.
Inmaculada
I
Viñas
Department of Food Biosciences, Teagasc Food Research Centre Ashtown, Dublin 15, Ireland.
Dilip K
DK
Rai
D018552:Daucus carota / Q000737:chemistry*; D053280:Diynes / Q000737:chemistry; D004560:Electricity; D005233:Fatty Alcohols / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry*; D053279:Polyynes / Q000737:chemistry*
D053280:Diynes; D005233:Fatty Alcohols; D010936:Plant Extracts; C018541:falcarinol; D053279:Polyynes; C034379:falcarindiol