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Title: | A comparison of low intensity UV-C and high intensity pulsed polychromatic sources as elicitors of hormesis in tomato fruit |
Authors: | Scott, George Rupar, M. Fletcher, A.G.D. Dickinson, M. Shama, Gilbert |
Keywords: | UV-C hormesis Solanum lycopersicum Intense pulsed light Induced resistance Delayed ripening Polychromatic light |
Issue Date: | 2017 |
Publisher: | © Elsevier |
Citation: | SCOTT, G. ... et al, 2017. A comparison of low intensity UV-C and high intensity pulsed polychromatic sources as elicitors of hormesis in tomato fruit. Postharvest Biology and Technology, 125, pp. 52-58. |
Abstract: | Post-harvest hormetic treatment of mature green tomato fruit (Solanum lycopersicum cv. Mecano) with high intensity pulsed polychromatic light (HIPPL) significantly delayed ripening to levels comparable to those achieved using a conventional low intensity UV-C (LIUV) source. A 16 pulse HIPPL treatment reduced the ΔTCI (tomato colour index) by 50.1 % whilst treatment with a LIUV source led to a reduction of 43.1 %. Moreover, the 16 pulse treatment also induced disease resistance in the fruit to Botrytis cinerea with a 41.7 % reduction in disease progression compared to a 38.1 % reduction for the LIUV source. A single 16 pulse HIPPL treatment was found to significantly reduce disease progression on both mature green and ripe fruit with a 28.5 % reduction on ripe fruit in comparison to 13.4 % for the LIUV treatment. It is shown here that delayed ripening and disease resistance are local responses in side treated tomato fruit for both LIUV and HIPPL treatments. Finally, utilising a 16 pulse HIPPL treatment would reduce treatment times from 370 s for LIUV sources to 10 s per fruit - a 97.3 % reduction. |
Description: | This paper is embargoed until May 2018. |
Sponsor: | The study was financed by the Agriculture and Horticulture Development Board’s Horticulture Department (AHDB Horticulture) Project Code- PE 023 and Loughborough University. Tomato fruit were provided by APS Salads (UK) to whom thanks are extended. |
Version: | Accepted for publication |
DOI: | 10.1016/j.postharvbio.2016.10.012 |
URI: | https://dspace.lboro.ac.uk/2134/23071 |
Publisher Link: | http://dx.doi.org/10.1016/j.postharvbio.2016.10.012 |
ISSN: | 0925-5214 |
Appears in Collections: | Closed Access (Chemical Engineering)
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