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https://hdl.handle.net/10316/3820
Title: | Experimental Determination and Computer Fitting of Desorption Isotherms of D. Joaquina Pears | Authors: | Guiné, R. P. F. Castrct, J. A. A. M. |
Keywords: | sorption isotherms; GAB equation; pear drying; water activity; ordinary least squares (OLS); orthogonal distance regression (ODR) | Issue Date: | 2002 | Citation: | Food and Bioproducts Processing. 80:3 (2002) 149-154 | Abstract: | Desorption isotherms at different operating temperatures provide valuable information for the design and control of drying processes. In the present work the desorption isotherms of pears are determined according to two equivalent forms of the GAB model at temperatures of 20, 25 and 30°C. These cover the range of summer average daily temperatures in Portugal, when the solar drying of pears is carried out. Two different computer fitting methodologies are used, namely, Ordinary Least Squares (OLS) and Orthogonal Distance Regression (ODR), in order to evaluate the above mentioned forms of the GAB model. | URI: | https://hdl.handle.net/10316/3820 | DOI: | 10.1205/096030802760309160 | Rights: | openAccess |
Appears in Collections: | FCTUC Eng.Química - Artigos em Revistas Internacionais |
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file0089428e478149aab66369a970e0ba98.pdf | 339.99 kB | Adobe PDF | View/Open |
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