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Research Articles

Impact of moderate intensity pulsed electric field (MIPEF) Treatment on Lycopene Content and Lycopene In VitroBioaccessibility of whole tomato

Authors:

K. G. L. R. Jayathunge ,

Queen’s University Belfast, Belfast Northern Ireland, GB
About K. G. L. R.
Institute for Global Food Security
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Alexandros Stratakos,

Queen’s University Belfast, Belfast, Northern Ireland, GB
About Alexandros
Institute for Global Food Security
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Oliver Cregenzan-Albertia,

University College Dublin, IE
About Oliver
School of Agriculture and Food Science
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Irene R. Grant,

Queen’s University Belfast, Belfast, Northern Ireland, GB
About Irene R.
Institute for Global Food Security
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James Lyng,

University College Dublin, IE
About James
School of Agriculture and Food Science
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Anastasios Koidis

Queen’s University Belfast, Belfast, Northern Ireland, GB
About Anastasios
Institute for Global Food Security
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Abstract

In this study, the impact of moderate intensity pulsed electric field (MIPEF) treatment parameters on enhancing the lycopene content and lycopene in vitro bioaccessibility was investigated. In the first experiment, tomato fruits were treated at 0.4, 1 and 2 kV/cm using 1 or 10 monopolar pulses of 4 μs at a frequency of 0.1 Hz and analysed 24 h after holding period at 40C while in the second experiment, the influence of treatmentintensity (0, 4, 80 and 320 μs) and holding period (0, 24 and 48 h) on lycopene contents and lycopene in vitro bioaccessibility was evaluated. Fresh sample, without MIPEF treatment, showed the lowest lycopene content (23.27±2.13 μg/g FW) and the lowest lycopene bioaccessibility (8.1±1.70%), while all MIPEF treatments (4 or 40 μs) at different electric field strength (0.4-2.0 kV/cm) enhanced the lycopene content and lycopene bioaccessibility. The results of second experiment revealed that the highest duration treatment (320 μs) showed the maximum lycopene enhancement immediately after the treatment (57.98±4.48μg/g) and decreased thereafter. All the treatments except 320 μs sample enhanced the lycopene invitrobioaccessibility after 24 h after holding period and decreased thereafter. The maximum total lycopene bioaccessibility content (9.6%) of whole tomato was achieved by a 4 μs (at 1 kV/cm) treatment after a 24 h holding period.
How to Cite: Jayathunge, K.G.L.R., Stratakos, A., Cregenzan-Albertia, O., Grant, I.R., Lyng, J. and Koidis, A., 2017. Impact of moderate intensity pulsed electric field (MIPEF) Treatment on Lycopene Content and Lycopene In VitroBioaccessibility of whole tomato. Tropical Agricultural Research, 28(4), pp.447–456. DOI: http://doi.org/10.4038/tar.v28i4.8245
Published on 28 Dec 2017.
Peer Reviewed

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