Dynamics of gas levels inside packages containing minimally processed Pera orange

  • Palharini M
  • Jacomino A
  • Pinheiro A
  • et al.
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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.O objetivo deste trabalho foi avaliar as mudanças nas concentrações de O2 e CO2 do interior de embalagens contendo laranja Pera minimamente processada. Laranjas previamente selecionadas, lavadas, sanitizadas e resfriadas foram descascadas por meio de tratamento hidrotérmico (imersão dos frutos em água a 50 °C por 8 minutos). Laranjas descascadas foram acondicionadas em cinco materiais de embalagem sob atmosfera modificada passiva e atmosfera modificada ativa (5% O2 + 10% CO2 + 85% N2). O armazenamento dos frutos foi realizado a 6 °C e 12 °C. A composição gasosa no interior das embalagens foi avaliada durante doze dias a 6 °C e durante 9 dias a 12 °C. O filme de polipropileno (32 µm) propiciou atmosfera modificada semelhante injetada inicialmente (5% O2 + 10% CO2 + 85% N2) a 6 °C e 12 °C. Em relação ao sistema de modificação da atmosfera, a injeção de mistura gasosa antecipou a atmosfera de equilíbrio, dentro das embalagens a 12 °C. A 6 °C, a composição gasosa dentro das embalagens foi mantida próxima dos níveis de injeção, mas o equilíbrio não foi verificado.

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APA

Palharini, M. C. de A., Jacomino, A. P., Pinheiro, A. L., Trevisan, M. J., & Sarantópoulos, C. I. G. de L. (2012). Dynamics of gas levels inside packages containing minimally processed Pera orange. Food Science and Technology, 32(4), 742–746. https://doi.org/10.1590/s0101-20612012005000100

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