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Molecules 2015, 20(3), 3942-3954; doi:10.3390/molecules20033942

Exploring the Effects of Pulsed Electric Field Processing Parameters on Polyacetylene Extraction from Carrot Slices

1
IRTA, XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Lleida 25003, Catalonia, Spain
2
Department of Food Biosciences, Teagasc Food Research Centre Ashtown, Dublin 15, Ireland
3
School of Agriculture and Food Science, University College Dublin, Dublin 4, Ireland
4
Food Technology Department, University of Lleida, XaRTA-Postharvest, Agrotecnio Center, Rovira Roure 191, Lleida 25198, Catalonia, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 14 January 2015 / Revised: 17 February 2015 / Accepted: 25 February 2015 / Published: 2 March 2015
(This article belongs to the Special Issue New Technologies for the Recovery of Natural Products)
View Full-Text   |   Download PDF [1128 KB, uploaded 17 March 2015]   |  

Abstract

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%. View Full-Text
Keywords: pulsed electric fields; polyacetylenes; falcarinol; falcarindiol; carrot; RSM pulsed electric fields; polyacetylenes; falcarinol; falcarindiol; carrot; RSM
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Aguiló-Aguayo, I.; Abreu, C.; Hossain, M.B.; Altisent, R.; Brunton, N.; Viñas, I.; Rai, D.K. Exploring the Effects of Pulsed Electric Field Processing Parameters on Polyacetylene Extraction from Carrot Slices. Molecules 2015, 20, 3942-3954.

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