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Abstract

An assay based on an electronic olfactory system was set to evaluate tomato fruits by sensing the aromatic volatiles during postharvest storage of 21 days at C in darkness. Olfactory system measurements were coupled with colour values. Odour profile and senescence parameters were carried out at 7-day intervals. Discriminant function analysis applied to electronic nose data showed three components, accounting for 99.2% of the total variance. In the present assay, separation among groups according to storage time (0, 7, and 14 days) was observed for wildtype. Overexpressed (Money Maker) lines/plants of tomato showed difference between odour profile for day 0 and day 21, even tough a no clear discrimination between 7 and 14 days was observed. Fruit lost weight almost linearly with shelf life () presenting an averaged loss of 21% () for over-expressed (Money Maker) lines/plants, 13% () for silenced (Money Maker), and 14% () for wild type during 21 days of storage. Colour values , , and  data showed that colour properties changed during storage for all the lines considered. Correlations between odour profiles and colour parameter were obtained showing that the electronic nose is a useful technique for monitoring short-term storage of tomato.

Published in

International Journal of Electrochemistry
2012, volume: 2012, article number: 687429

SLU Authors

  • Dominguez, Guadalupe

    • National Scientific and Technical Research Council (CONICET)

UKÄ Subject classification

Other Agricultural Sciences not elsewhere specified

Publication identifier

  • DOI: https://doi.org/10.1155/2012/687429

Permanent link to this page (URI)

https://res.slu.se/id/publ/90496