Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/18842
Título: Influence of postharvest ultrasounds treatments on tomato (Solanum lycopersicum, cv. Zinac) quality and microbial load during storage
Autor: Pinheiro, Joaquina
Alegria, Carla
Abreu, Marta
Gonçalves, Elsa M.
Silva, Cristina L. M.
Palavras-chave: Ultrasounds
Tomato
Postharvest quality
Optimisation
Data: 2015
Citação: PINHEIRO, Joaquina; ALEGRIA, Carla; ABREU, Marta; GONÇALVES, Elsa M.; SILVA, Cristina L.M. - Influence of postharvest ultrasounds treatments on tomato (Solanum lycopersicum, cv. Zinac) quality and microbial load during storage. Ultrasonics Sonochemistry. ISSN 1350-4177. (2015) vol.27, 552–559
Resumo: Whole tomato fruits were treated at ultrasonic power levels from 10% to 100%, and at a constant frequency of 45 kHz, for different times (1–19 min). A central composite rotatable design (CCRD) was applied to optimise ultrasonic treatments for tomato quality (colour, texture and total phenolic content (TPC)) maintenance. According to response surface analysis, the optimal treatment parameters were 55%_10 min, 80%_15 min and 100%_19 min. At these conditions, and especially at higher power levels, a maximum retention of colour and texture, as well as an increase of TPC and microbial reduction were obtained in comparison with untreated fruits during 15 storage days at 10 C. The ultrasounds treatment was found to be effective in delaying colour development and texture losses, preserving sensorial quality of whole tomato, with increase of TPC and microbial load reduction. Moreover, this postharvest treatment can be used as an alternative for extending fresh fruits shelf-life.
Peer review: yes
URI: http://hdl.handle.net/10400.14/18842
DOI: http://dx.doi.org/10.1016/j.ultsonch.2015.04.009
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S1350417715000899
Aparece nas colecções:CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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