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1612389 
Journal Article 
NIR prediction of fruit moisture, free acidity and oil content in intact olives 
Antonio Cayuela, J; Maria Garcia, J; Caliani, N 
2009 
1 
Grasas y Aceites
ISSN: 0017-3495
EISSN: 1988-4214 
CONSEJO SUPERIOR INVESTIGACIONES CIENTIFICAS-CSIC 
MADRID 
60 
2 
194-202 
English 
WOS:000266714400012 
In this work, the prediction of olive fruit and virgin
olive oil quality parameters through the direct measuring of the fruit using near infrared
spectrometry (NIRS) has been investigated and the effectiveness of a portable spectrometer has
been assessed. Models and calibration tests were developed using both the hexane-isopropanol
extraction of individual olive fruits, and the Soxhlet extraction of olive paste. The parameters
analyzed were the free acidity in olive oil, oil yield from physical extraction, oil content
referring to fresh weight, oil content referring to dry matter and fruit moisture. The results
indicate a good predictive potential with both methodologies and serve to encourage improvement
in the obtained models through the enlargement of the calibrations. 
Acidity; Oil; Olive; Moisture; NIR