African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Effect of chitosan-based coating on postharvest quality of tangerines (Citrus deliciosa Tenore): Identification of physical, chemical, and kinetic parameters during storage

Geovana Rocha Plácido
  • Geovana Rocha Plácido
  • Instituto Federal Goiano - Campus Rio Verde, Rodovia Sul Goiana, Km 01, P. O. Box 66, Zip Code 75901-970, Rio Verde, GO, Brazil.
  • Google Scholar
Richard Marins da Silva
  • Richard Marins da Silva
  • Departamento de Tecnologia de Alimentos. Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, Campus Universitário, Zip Code 36570-900, Viçosa, MG, Brasil.
  • Google Scholar
Caroline Cagnin
  • Caroline Cagnin
  • Instituto Federal Goiano - Campus Rio Verde, Rodovia Sul Goiana, Km 01, P. O. Box 66, Zip Code 75901-970, Rio Verde, GO, Brazil.
  • Google Scholar
Maisa Dias Cavalcante
  • Maisa Dias Cavalcante
  • Instituto Federal Goiano - Campus Rio Verde, Rodovia Sul Goiana, Km 01, P. O. Box 66, Zip Code 75901-970, Rio Verde, GO, Brazil.
  • Google Scholar
Marco Antônio Pereira da Silva
  • Marco Antônio Pereira da Silva
  • Instituto Federal Goiano - Campus Rio Verde, Rodovia Sul Goiana, Km 01, P. O. Box 66, Zip Code 75901-970, Rio Verde, GO, Brazil.
  • Google Scholar
Márcio Caliari
  • Márcio Caliari
  • Universidade Federal de Goiás, Escola de Agronomia e Engenharia de Alimentos, Campus Samambaia, Rodovia Goiânia-Nova Veneza, Km-0, P.O. Box 131, Zip Code 74690-900, Goiânia, GO, Brasil.
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Maria Siqueira de Lima
  • Maria Siqueira de Lima
  • Instituto Federal Goiano - Campus Rio Verde, Rodovia Sul Goiana, Km 01, P. O. Box 66, Zip Code 75901-970, Rio Verde, GO, Brazil.
  • Google Scholar
Luiz Eduardo Costa do Nascimento
  • Luiz Eduardo Costa do Nascimento
  • Instituto Federal Goiano - Campus Rio Verde, Rodovia Sul Goiana, Km 01, P. O. Box 66, Zip Code 75901-970, Rio Verde, GO, Brazil.
  • Google Scholar


  •  Received: 19 November 2015
  •  Accepted: 17 February 2016
  •  Published: 16 June 2016

Abstract

In this study, chitosan-based coating was used in tangerines in a 30-day storage period, at controlled temperature of 10°C. The selected fruits presented green surface (± 90%); they were sanitized in chlorinated water (100 mg/L) then immersed in chitosan solutions at chitosan concentrations of 0.5 g/100 ml (T2), 1 g/100 ml (T3), and 2 g/100 ml (T4) and a lot was placed aside as control treatment (T1). Tangerines were evaluated in terms of loss of mass, skin color, soluble solids, vitamin C, and titratable acidity in a 30-day storage period and weight loss kinetics was evaluated through mathematical models. The results showed that chitosan coating was effective in delaying weight loss of tangerines and the mathematical models used in the evaluation could properly explain the weight loss. The polynomial model showed better adaptation to experimental data. Tangerines with higher chitosan concentration showed small color alteration during storage. Chitosan-based coatings were effective in keeping soluble solids, vitamin C, and titratable acidity during storage. In all physicochemical characteristics analyzed, chitosan-based coating in tangerines were superior when compared with control fruits.

 

Key words: Citrus, chitosan, postharvest, shelf life, quality.