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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Chitosan applications pre- or postharvest prolong raspberry shelf-life quality

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Author(s):
Tezotto-Uliana, Jaqueline Visioni [1] ; Fargoni, Gabriela Possati [1] ; Geerdink, Gabriela Maria [1] ; Kluge, Ricardo Alfredo [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, BR-13418900 Piracicaba, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Postharvest Biology and Technology; v. 91, p. 72-77, MAY 2014.
Web of Science Citations: 32
Abstract

Raspberries are fruit with high metabolism that makes them very perishable, impairing their storage and shelf-life. Chitosan coatings have the potential to improve their postharvest life by reducing water loss, respiration rate and decay incidence. The purpose of this work was to study the effect of different concentrations of chitosan, applied pre- or postharvest, on the retention of quality attributes of fresh raspberries. The chitosan concentrations tested were 0 (control), 0.5, 1.0 or 2.0%. The postharvest treatment was applied immediately after harvest, dipping the fruit in the solutions for 5 min. The pre-harvest treatment was done with one hand-spray application per week for three weeks, starting when the fruit were just turning pink. In both experiments the fruit were stored at 0 degrees C and 90% RH. Pre- or postharvest use of chitosan at 1 or 2% was effective in maintaining titratable acidity and retarding respiration and ethylene production, weight loss and decay incidence. Application by both means resulted in the highest chitosan concentrations accelerating a reduction of ascorbic acid contents. Firmness was maintained only when the fruit were treated pre-harvest at 2%. Thus, application of chitosan at 1 or 2% postharvest and 2% pre-harvest was able to retain key raspberry quality attributes for 15 and 12 days, respectively. (C) 2014 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 10/02601-3 - Development of postharvest storage methods of fresh raspberry
Grantee:Jaqueline Visioni Tezotto-Uliana
Support Opportunities: Scholarships in Brazil - Master