Hayward kiwifruits and Plant Growth Regulators: Detection and effects in post-harvest studied by Magnetic Resonance Imaging and Scanning Electron Microscopy

Anna Taglienti, Paolo Sequi, Caterina Cafiero, Sara Cozzolino, Mena Ritota, G. Ceredi, Massimiliano Valentini

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We used Magnetic Resonance Imaging spectroscopy to reveal the use of two Plant Growth Regulators (PGRs), i.e. cytokinin and auxin, on Hayward kiwifruits, at any stage of cultivation, and post-harvest ripening and storage. The internal morphology was non-destructively determined in order to depict structural features related to hormones treatments and we found that T 2-weighted MRI images showed different internal tissue organisations depending upon the use and the type of PGR. Transverse relaxation times allowed the recognition of cytokinin-treated samples, whilst image analysis was used to identify auxin-treated kiwifruits. We also exploited the post-harvest conditions, i.e. normal refrigeration and controlled atmosphere, on PGRs treated kiwifruits, and found that auxin shortened the shelf-life, with normal refrigeration exerting a stronger effect. The kiwifruit pulp was also investigated by means of Scanning Electron Microscopy, highlighting significant differences at a cellular level amongst treatments, in terms of pore size and vacuoles number, both probably playing a fundamental role in the evaporation activity.

Original languageEnglish
Pages (from-to)731-736
Number of pages6
JournalFood Chemistry
Volume126
Issue number2
DOIs
Publication statusPublished - May 15 2011

Fingerprint

Indoleacetic Acids
Plant Growth Regulators
kiwifruit
plant growth substances
magnetic resonance imaging
Electron Scanning Microscopy
Cytokinins
Refrigeration
scanning electron microscopy
Magnetic Resonance Imaging
auxins
Scanning electron microscopy
refrigeration
cytokinins
Vacuoles
Atmosphere
Magnetic resonance imaging
Relaxation time
Image analysis
Pore size

Keywords

  • Kiwifruits
  • MRI
  • Non-destructive analysis
  • Post-harvest quality
  • SEM
  • Synthetic hormones

ASJC Scopus subject areas

  • Analytical Chemistry
  • Food Science

Cite this

Hayward kiwifruits and Plant Growth Regulators : Detection and effects in post-harvest studied by Magnetic Resonance Imaging and Scanning Electron Microscopy. / Taglienti, Anna; Sequi, Paolo; Cafiero, Caterina; Cozzolino, Sara; Ritota, Mena; Ceredi, G.; Valentini, Massimiliano.

In: Food Chemistry, Vol. 126, No. 2, 15.05.2011, p. 731-736.

Research output: Contribution to journalArticle

Taglienti, Anna ; Sequi, Paolo ; Cafiero, Caterina ; Cozzolino, Sara ; Ritota, Mena ; Ceredi, G. ; Valentini, Massimiliano. / Hayward kiwifruits and Plant Growth Regulators : Detection and effects in post-harvest studied by Magnetic Resonance Imaging and Scanning Electron Microscopy. In: Food Chemistry. 2011 ; Vol. 126, No. 2. pp. 731-736.
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