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Revista Facultad Nacional de Agronomía Medellín
versão impressa ISSN 0304-2847
Resumo
CIRO VELASQUEZ, Héctor José; BUITRAGO GIRALDO, Omar Hideki e PEREZ ARANGO, Sebastián Adolfo. PRELIMINARY STUDY OF MECHANICAL RESISTANCE TO FRACTURE AND FIRMNESS FORCE FOR UCHUVA (Physalis peruviana L) FRUITS. Rev. Fac. Nac. Agron. Medellín [online]. 2007, vol.60, n.1, pp.3785-3796. ISSN 0304-2847.
A rheological characterization under unidirectional compression of uchuva fruits (Physalis peruviana L.) was undertaken measuring the flesh firmness force and the fracture force according to three specifc developmental stages unripe, ripenning, ripe and five postharvest times (1,3,5,7 and 9 days). The results showed that the flesh firmness and the mechanical resistance to the fracture in two loading directions longitudinal and transversal diminish with the postharvest time. Moreover, the ripe fruit is more susceptible to mechanical damage with respect to unripe and ripening fruit.
Palavras-chave : Uchuva; flesh firmness; fracture force; rheology; texture; mechanical damage.