PHYSICAL AND MECHANICAL PROPERTIES CORRELATION OF COFFEE FRUIT (Coffea arabica) DURING ITS RIPENING

There were correlated CIELAB color coordinates and reflectance in the visible spectrum of the exocarp of Coffea arabica coffee fruits of the Colombia variety in 9 different development stages, with physical properties such as fresh and dry mass, moisture content, and diameters; and mechanical properties such as detaching tensile force, fracture force, firmness, deformation, and fracture energy in the breaking point. A multivariate linear regression analysis was run to obtain models to accurately predict properties of the coffee fruit from the chromatic coordinates (a* and/or b*) or reflectance for discriminating wave lengths of different stages of development of the coffee fruit, with a confidence level of 99% and an R2 between 78.5 and 99.9%. Results could be used for the design of harvesting and classification systems, as well as for a rapid determination of coffee quality.

Bibliographic Details

Main Authors:	ARISTIZÁBAL TORRES,IVÁN DARÍO, CARVAJAL HERRERA,JOSÉ JAIME, OLIVEROS TASCÓN,CARLOS EUGENIO
Format:	Digital revista
Language:	English
Published:	Universidad Nacional de Colombia 2012
Online Access:	http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0012-73532012000200017
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