02401cab a2200301Ia 45 0 u193375 SIRSI 110710s2008 ua ss b eng d EAL eng ara ART MJAE V25 NO4 13 Elbatawi, I. E. Misr Journal of Agricultural Engineering, 2008 v.28 (4) [electronic resource]. Determination of potato water content using NIR diffuse reflection method [electronic resource]. تقدير المحتوى المائى للبطاطس باستخدام خاصية انعكاس الاشعة .‪‪ p.1279-1292. Includes references. Spectroscopic techniques with near infrared (NIR) method has been used for the compositional, functional and sensory analysis of food ingredients, process intermediates, and final products all over the world. This study demonstrated a potential way to predict water content in potatoes (Diamant variety) using electric heater, spectroscopy within visible (VIS) and near infrared (NIR) spectral data.The data was selected to establish a prediction models to estimate potato water content (with or without skin). Partial least square regression was used to establish calibration models for predicting the water content in potato samples. Significant wavelength ranges of 750-900, 1000-1150 and 1350-1550 nm was used to predict potato water content without skin. On the other hand, significant wavelength ranges of 750-900, 1000-1250 and 1350-1550 nm was used to predict potato water content with skin according to the experiment results. For potatoes without skin, the R2 values for prediction of water content was 0.994 and it was 0.997 for potatoes with skin. The residual error was found to be lower for validation set in both test sets using the select wavelength segments. Results also concluded that, spectrometer is accurate, easy and faster than electric heater for the same amount of potato. Summary in Arabic. Water content in plants. Potatoes Research. Near infrared spectroscopy. Ebaid, M. T. Hemeda, B. E. Misr Journal of Agricultural Engineering. 2008.v.25(4) 1687-384X nnas u192786 http://nile.enal.sci.eg/EALE/2008/MJAE/2508/4/1279.pdf Full Text Article 1 AR lcc 46905 46905