Dynamics of gas levels inside packages containing minimally processed Pera orange

Author:

Palharini Maria Cecília de Arruda1,Jacomino Angelo Pedro2,Pinheiro Ana Luíza2,Trevisan Marcos José2,Sarantópoulos Claire Isabel Grígoli de Luca3

Affiliation:

1. Agência Paulista de Tecnologia dos Agronegócios, Brasil

2. Escola Superior de Agricultura Luiz de Queiroz, Brasil

3. Instituto de Tecnologia de Alimentos, Brasil

Abstract

The purpose of this study was to evaluate the changes in concentrations of O2 and CO2 inside packages of minimally processed Pera orange. Previously selected oranges that were washed, sanitized, and chilled were peeled using hydrothermal treatment (immersion of fruits in water at 50 °C for 8 minutes). The peeled oranges were then packed in five different plastic packages under passive and active modified atmosphere (5% O2 + 10% CO2 + 85% N2). The fruits were stored at 6 °C and 12 °C. The package headspace gas composition was evaluated for twelve days at 6 °C and nine days at 12 °C. The polypropylene film (32 µm) promoted modified atmosphere similar to that initially injected (5% O2 + 10% CO2 + 85% N2) at 6 °C and 12 °C. With regard to the atmosphere modification system, the injection of a gas mixture anticipated achieving an equilibrium atmosphere inside the packages at 12 °C. At 6 °C, the gas composition inside the packages was kept close to that of the injection, but the equilibrium was not verified.

Publisher

FapUNIFESP (SciELO)

Subject

Food Science,Biotechnology

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