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Revista Brasileira de Fruticultura

versão impressa ISSN 0100-2945


NEVES, Leandro Camargo et al. Evaluation of different types of modified atmosphere in cold storage of star fruits minimally processed. Rev. Bras. Frutic. [online]. 2006, vol.28, n.3, pp.467-472. ISSN 0100-2945.

This work aimed to evaluate the potential of cold storage of star fruits cv. Golden Star, minimally processed, by using different types of packing, for the analysis of the modified passive atmosphere. The fruits harvested in nature-green stage showed green-yellowish coloration, soluble solids (SS) an average of 6,8 ºBrix and an average mass of 185g . Before the treatments were set, the fruits had been selected, cleaned in solution of NaOCl at 10 mg. L-1, cooled for 12 hours at 15 ± 0,5 °C, cut transversally, and cleaned in solution of NaOCl at 10 mg. L-1, for 3 minutes. After, the pieces in form of stars had been displayed in rigid polystyrene trays, with capacity for 250g, and coated with the following materials: T1: perforated film plastic of low density polyethylene (LDPE), with 0,006 mm; T2: polyolephinic plastic film with anti-fog of DuPont® (AGF), with 0,015mm; T3: polyolephinic plastic film of Dupont® (HF), with 0,015 mm; T4: LDPE plastic film, with 0,060 mm; T5: LDPE plastic film, with 0,080 mm; T6: polypropylene plastic film (PP), with 0,022 mm and T7: rigid polyethylene terephtalat tray (PET), with capacity for 500 mL, with cover of the same material. The treatments had been conditioned in refrigerating chamber at 12 ± 0,5 °C and 90 ± 3% of R.U., for 18 days. At the end, it was not observed significant difference in the tested treatments in the analysis of soluble solids (SS) and titratable acidity (TA). The biggest microbiological activity and the greater pH had been detected in the fruits packed in LDPE films with 6 µm, AGF and HF with 15µm from Dupont. However, the fruits conditioned in packing PET had shown the biggest contents of ascorbic acid. In the same way, only in PET packing was obtained an efficient atmospheric modification in the point of maintaining the quality of sensorial attributes during RA. Thus, this treatment provided the adequate microbiological control and maintenance of the sensorial attributes for 18 days for minimally processed star fruits.

Palavras-chave : Averrhoa carambola; quality; shelf-life; plastic packages.

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