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Food Science and Technology

versão impressa ISSN 0101-2061

Resumo

ALVES, Juliana Alvarenga; VILAS BOAS, Eduardo Valério de Barros; VILAS BOAS, Brígida Monteiro  e  SOUZA, Éllen Cristina de. Maintenance of the quality of fresh-cut products made up of pumpkin, carrot, chayote, and arracacha (peruvian carrot). Ciênc. Tecnol. Aliment. [online]. 2010, vol.30, n.3, pp.625-634. ISSN 0101-2061.  https://doi.org/10.1590/S0101-20612010000300009.

The goal of this study was to evaluate the quality of fresh-cut products made up of four vegetables: pumpkin, carrot, chayote, and arracacha (peruvian carrot) stored at 5 ºC for 8 days. It was observed that the contents of humidity, fiber, protein, ash, and glucidic fraction of the four vegetables were not affected by the time of storage; however, the content of ethereal extract increased. During storage, the content of vitamin C and titratable acidity decreased in all the vegetables. The content of β-carotene of chayote did not change, whereas the content in the pumpkin, carrot, and the peruvian carrot increased. The pH of the four vegetables increased during storage. The contents of soluble solid of the carrot and the peruvian carrot increased, but they were not affected for the pumpkin and chayote. The "mix" appearance ratings were not lower than 7 (liked moderately) during storage showing product acceptance by the panelists. The coliforms at 35 ºC present in the mix increased during storage. No coliforms at 45 ºC and Salmonella sp. in were observed in the period of time studied. It can be said that, according to microbiological, sensorial, and nutritional aspects, the shelf-life of minimally processed pumpkin, carrot, chayote, and peruvian carrot is 8 days under refrigeration.

Palavras-chave : pumpkin; carrot; chayote; peruvian carrot; minimal processing; shelf life.

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