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Impact of atmospheric ozone-enrichment on quality-related attributes of tomato fruit

Lookup NU author(s): Nicolaos Tzortzakis, Professor Anne Borland, Dr Ian Singleton, Professor Jerry Barnes

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Abstract

Tomato fruit (Lycopersicon esculentum L. cv. Carousel) were exposed to ozone concentrations ranging between 0.005 (controls) and 1.0 μmol mol-1 at 13 °C and 95% RH. Quality-related attributes and organoleptic characteristics were examined during and following ozone treatment. Levels of soluble sugars (glucose, fructose) were maintained in ozone-treated fruit following transfer to 'clean air', and a transient increase in β-carotene, lutein and lycopene content was observed in ozone-treated fruit, though the effect was not sustained. Ozone-enrichment also maintained fruit firmness in comparison with fruit stored in 'clean air'. Ozone-treatment did not affect fruit weight loss, antioxidant status, CO2/H2O exchange, ethylene production or organic acid, vitamin C (pulp and seed) and total phenolic content. Panel trials (employing choice tests, based on both appearance and sensory evaluation) revealed an overwhelming preference for fruit subject to low-level ozone-enrichment (0.15 μmol mol-1), with the effect persisting following packaging. © 2007.


Publication metadata

Author(s): Tzortzakis N, Borland A, Singleton I, Barnes J

Publication type: Article

Publication status: Published

Journal: Postharvest Biology and Technology

Year: 2007

Volume: 45

Issue: 3

Pages: 317-325

ISSN (print): 0925-5214

ISSN (electronic): 1873-2356

Publisher: Elsevier BV

URL: http://dx.doi.org/10.1016/j.postharvbio.2007.03.004

DOI: 10.1016/j.postharvbio.2007.03.004


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