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Dielectric spectroscopy as a potential technique for prediction of kiwifruit quality indices during storage

Information Processing in Agriculture 2019年第4期6卷 479-486页

作者： Atefeh Fazayeli saadat kamgar Seyed Mehdi Nassiri Hassan Fazayeli Miguel de la Guardia Biosystems Engineering Department Shiraz UniversityShirazIran School of Computer Science Universiti Sains Malaysia 11800 USMPulau PinangMalaysia Department of Analytical Chemistry University of Valencia46100 BurjassotSpain

Dielectric spectroscopy has been employed as a simple,low cost and a non-destructive way for prediction of some physicochemical indices of kiwifruit during storage.A parallel-plate capacitor was developed and supplied with sinusoidal voltage waves within a frequency range of 40 kHz–20 *** properties of samples were measured by the dielectric ***,changes associated with fruit ripening properties,including firmness,total soluble solid(TSS)and pH were determined as a function of time at 2*** results showed that storage time significantly affected the quality characteristics of *** neural networks(ANNs)were employed to develop models for prediction of quality indices from dielectric properties at the swept *** property features were selected as inputs while the quality indices including firmness,TSS and pH were chosen as output for the *** obtained models were able to predict the firmness,soluble solids content,and pH of kiwifruit *** predictive models,an ANN with a topology of 20-19-1 gave a perfect capability to predict the kiwifruit firmness with R2 value of *** of this research show that this technique can be used as an efficient and non-destructive method for kiwifruit quality evaluation and monitoring the ripening.

关键词： Kiwifruit Dielectric spectroscopy Firmness Total soluble solids pH

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