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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.)

Effect of hyperbaric pressure on the activity of antioxidant enzymes and bioactive compounds of cv. `Debora' tomatoes

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Inestroza-Lizardo, Carlos [1] ; Mattiuz, Ben-Hur [2] ; da Silva, Josiane Pereira [3] ; Voigt, Vanessa [2] ; Muniz, Ana Carolina [2] ; Pinsetta Junior, Jose Sidnaldo [2]
Total Authors: 6
[1] Univ Nacl Agr, Fac Ciencias Tecnol, Carretera Dulce Nombre Culmi, Km 215, Barrio El Espino, Catacamas - Honduras
[2] Sao Paulo State Univ Unesp, Sch Agr & Vet Sci, Jaboticabal, SP - Brazil
[3] UFRA, Dept Agron, Parauapebas, Para - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Scientia Horticulturae; v. 249, p. 340-346, APR 30 2019.
Web of Science Citations: 0

The objective of this work was to evaluate the effects of the application of hyperbaric pressures 100 (control), 200, 400, 600 and 800 kPa at ambient temperature (23 +/- 1 degrees C) for 2, 4 or 6 d, followed by 2 d at under ambient conditions (23 degrees C, 50% RH and 100 kPa), on the activity of antioxidant enzymes and the concentrations of bioactive compounds in cv. `Debora' tomatoes. Between the 2nd and 6th day of hyperbaric pressure application, there was an average increase of 37%, 33% and 27% in the content of malondialdehyde MDA, total polyphenols and ascorbic acid in tomatoes, respectively, which is related to accelerated maturation of the tomatoes. Consequently, at the end of storage (6 + 2), the fruits, on average, showed 86% higher antioxidant activity than that of the initial content (412.78 mu mol TEAC kg(-1) FW). However, hyperbaric pressures between 400 kPa and 800 kPa induced an increase in enzymatic activity of CAT and the reduction of POD activity due to the reduction of oxidative stress and the delayed senescence of tomatoes. The results of this research indicate that hyperbaric pressure did not stimulate the accumulation of bioactive compounds but did stimulate the activity of CAT and a reduction of POD activity. (AU)

FAPESP's process: 15/07152-6 - Effects of super O2 atmospheric storage on postharvest quality of 'Deborah' tomato
Grantee:Ben-Hur Mattiuz
Support type: Regular Research Grants