Isothermal calorimetry approach to evaluate the effect of tissue wounding on vegetable metabolism

Lars Wadsö, FG Galindo, Ingegerd Sjöholm, Pietro Rocculi

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingResearchpeer-review

Abstract

We have made a study by isothermal calorimetry of the heat production response of root and tuber tissue to wounding. Samples with different surface to volume ratios were prepared from carrots, potatoes and swedes (rutabaga) and the overall metabolic heat was measured in closed glass ampoules in a TAM Air isothermal calorimeter. The evaluation was made by assuming that a certain heat production rate per volume tissue was associated with the normal metabolic activity, and that another heat production rate per surface area was associated with the wound response. The results showed that the wound response part was high; in some cases almost half the heat came from the wound response and not from the ordinary metabolic activity. Measurements such as the ones shown here can be used to understand the effect of wound-induced metabolism in produce quality changes and packaging design.
Original languageEnglish
Title of host publicationProceedings of the 5th International Postharvest Symposium, Vols 1-3
PublisherInternational Society for Horticultural Science (ISHS)
Pages1977-1982
Publication statusPublished - 2005
Event5th International Postharvest Symposium - Verona, Italy
Duration: 2004 Jun 62004 Jun 11

Publication series

Name
Number682
ISSN (Print)0567-7572

Conference

Conference5th International Postharvest Symposium
Country/TerritoryItaly
CityVerona
Period2004/06/062004/06/11

Subject classification (UKÄ)

  • Food Engineering
  • Materials Engineering

Keywords

  • fresh-cut
  • wounding stress
  • metabolic heat
  • potatoes
  • root vegetables

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