Evaluation of Texture of Packhams Pears
Authors: Raquel P. F. Guiné, Bruno L. Marques
Abstract:
The textural parameters, together with appearance and flavor, are sensory attributes of great importance for the product to be accepted by the consumer. The objective of the present study was the evaluation of the textural attributes of Packhams pears in the fresh state, after drying in a chamber with forced convection at 50ºC, lyophilized and re-hydrated. In texture analysis it was used the method of Texture Profile Analysis (TPA). The parameters analyzed were hardness, cohesiveness, adhesiveness, elasticity and chewiness. From the results obtained is possible to see that the drying operation greatly affected some textural properties of the pears, so that the hardness diminished very much with drying, for both drying methods.
Keywords: Drying, pear, texture, hardness.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1087011
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[1] M. J. Barroca, R. P. F. Guiné, A. Pinto, F. M. Golçalves, D.M.S.
Ferreira, “Chemical and microbiological characterization of Portuguese
varieties of pears,” Food Bioprod. Process., vol. 84, pp. 109–113, June
2006.
[2] R. P. F. Guiné, D. M. S. Ferreira, M. J. Barroca, F. M. Gonçalves,
“Study of the drying kinetics of solar-dried pears,” Biosyst. Eng., vol.
98, pp. 422–429, December 2007.
[3] R. P. F. Guiné, D. M. S. Ferreira, M. J. Barroca, F. M. Gonçalves,
“Study of the solar drying of pears,” Int. J. Fruit Sci., vol. 7, pp. 101–
118, December 2007.
[4] C. G. Downs, A. E. Pickering, M. Reihana, “Influence of temperature
between harvest and storage on the ripening of ‘Packhams Triumph’
pears,” Sci. Hortic., vol. 39, pp. 235–246, June 1989.
[5] R. P. F. Guiné, M. J. Barroca, “Influence of freeze-drying treatment on
the texture of mushrooms and onions,” Croatian J. Food Sci. Technol.,
vol. 3, pp. 26–31, December 2011.
[6] V. Marsilio, B. Lanza, C. Campestre, M.. De Angelis, “Oven-dried table
olives: textural properties as related to pectic composition,” J. Sci. Food
Agr., vol. 80, pp. 271–1276, June 2000.
[7] V. R. N. Telis, J. Telis-Romero, A. L. Gabas, “Solids rheology for
dehydrated food and biological materials,” Dry. Technol., vol. 23, pp.
759–780, March 2005.
[8] F. R. Harker, F. A. Gunson, C. M. Triggs, “Apple firmness: Creating a
tool for product evaluation based on a sensory–instrumental
relationship,” Postharvest Biol. Tec., vol. 39, pp. 327–330, March 2006.
[9] R. P. F. Guiné, M. J. Barroca, “Effect of Drying on the Textural
Attributes of Bell Pepper and Pumpkin,” Dry. Technol., vol. 29, 1911–
1919, December 2011.
[10] A. M. Cavaco, P. Pinto, M. D. Antunes, J. M. Silva, R. Guerra,
“‘Rocha’ pear firmness predicted by a Vis/NIR segmented model,”
Postharvest Biol. Tec., vol. 51, pp. 311–319, March 2009.
[11] S. C. R. V. L. Santos, A. I. A. Barros, R. P. F. Guiné, “Influence of
drying on the properties of pears of the Rocha variety (Pyrus communis
L.),” Int. J. Food Eng., to be published.
[12] R. P. F. Guiné, “Variation of textural attributes of S. Bartolomeu pears
at maturation, storage and drying,” Int. J. Food Prop., to be published.