Hyperbaric pressure at room temperature increases post-harvest preservation of the tomato cultivar ‘Débora’
2018
Inestroza-Lizardo, Carlos | Mattiuz, Ben-Hur | da Silva, Josiane Pereira | Galati, Vanessa Cury | Voigt, Vanessa
The aim of the present study was to evaluate the effect of the application of hyperbaric pressure at room temperature (23±1°C) for 2, 4 or 6d, followed by 2d under ambient conditions (23°C, 50% relative humidity, 100kPa), on the physical, chemical and metabolic characteristics of the tomato cultivar ‘Débora’. The following pressures were tested: 100 (control), 200, 400, 600 and 800kPa. Tomatoes subjected to 600 or 800kPa for 6d presented lower weight loss (up to 80%) and 1.2 times greater firmness than control tomatoes. Hyperbaric pressure did not decrease the tomato respiration rate. However, the initial tomato color was maintained with increasing applied pressure, and pressure decreased tomato lycopene synthesis by up to 57%. Normal tomato ripening was not negatively affected by the application of hyperbaric pressure. The present results show that application of hyperbaric pressure up to 800kPa at 23°C delays the ripening of the tomato cultivar ‘Débora’ and results in longer shelf life.
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