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Title: Improved procedures for the transport and storage of fruit and vegetables
Author: Harper, Karen
ISNI:       0000 0004 5364 8628
Awarding Body: Prifysgol Bangor University
Current Institution: Bangor University
Date of Award: 2014
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Natural methods (biocontrol) for the preservation of harvested fruits and vegetables were investigated. This was in order to potentially help the industry overcome the environmental problems and pathogen resistance being encountered with the use of synthetic fungicides. The main focus of research was the use of volatile compounds found in citrus fi'Uit. These were utilised in in vivo studies with citrus fi'Uit artificially inoculated with Penicillium digitatum and P. italicum, as well as strawberries inoculated with Botlytis cinerea. The extent of pathogen growth was measured after exposure to the volatiles for a number of days (7 for citrus fruit and 3 for strawberries) in environmentally-controlled containers. The 'freshness' of the fruit was also ascertained via measurements of water/weight loss. The essential oil of orange itself was highly effective at reducing Penicillium growth (> 30% inhibition) and water/weight loss in the fruit (> 20% reduction), as were some of its individual components - (E)-2-hexenal, neryl acetate and linalool. The aldehyde (E)-2-hexenal also had high efficacy against B. cinerea and reduced water/weight loss in strawbenies, although in these investigations the ketone, (R)-carvone was the most effective overall (> 30% mean pathogen inhibition and> 35% mean reduction in water/weight loss).
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available