Monitoring of firmness evolution of peaches during storage by combining acoustic and impact methods |
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| Affiliation: | 1. Rural Engineering Department, Physical Properties Laboratory, Polytechnic University of Madrid, E.T.S.I.A. Avda. Complutense s/n, 28040 Madrid, Spain;2. Agriculture and Agricultural Economy Department, University of Zaragoza. Huesca, Spain;1. Department of Electrical, Electronic Engineering, Faculty of Engineering, Atatürk University, 25240 Erzurum, Turkey;2. Department of Agricultural Machinery, Faculty of Agriculture, Atatürk University, 25240 Erzurum, Turkey;3. Provincial directorate of agriculture, Mersin, Turkey;1. College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China;2. Key Laboratory of Agricultural Internet of Things, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, China;3. Shaanxi Key Laboratory of Agricultural Information Perception and Intelligent Service, Yangling, Shaanxi, 712100, China;4. Shaanxi Agricultural Equipment Engineering Technology Centre, Yangling, Shaanxi, 712100, China;1. INTA Alto Valle, Postharvest. CC 782 (8338), General Roca, Argentina;2. INFIVE (CONICET-UNLP). Diag. 113 y 61 (1900), La Plata, Argentina;3. IRTA Postharvest, PCiTAL, Parc de Gardeny, Edifici Fruitcentre, 25003 Lleida, Spain;1. Applied Agricultural Institute, Iranian Research Organization for Science and Technology, Faculty of Agricultural Engineering and Technology, Tehran University, Karaj, Iran;2. Faculty of Agricultural Engineering and Technology, Tehran University, Karaj, Iran;3. College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China;4. Faculty of Agricultural Sciences and Engineering, Tehran University, Karaj, Iran;5. Faculty of Mechanical Engineering, Tehran University, Tehran, Iran;1. State Key Laboratory of Food Nutrition and Safety, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China;2. Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products, National Engineering and Technology Research Center for Preservation of Agricultural Products, Tianjin 300384, China;3. Xinjiang Red Flag Slope Agricultural Development Group Co. Ltd., Xinjiang, 843000, China |
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| Abstract: | Firmness is a very important quality property in peach. The storage of peach affects its subsequent softening process and shelf life. The temperature and duration of storage mainly influence the firmness of stored fruit, and monitoring the evolution of fruits enables producers to manage its commercial life. The objective of the present study was to use non-destructive acoustic and impact tests to estimate firmness of peaches and to elucidate the influence of storage temperature and of time on the softening process of peach. Continuous and classification models based on variables obtained from non-destructive methods were developed. Parameters obtained from non-destructive methods were compared to destructive reference tests. The maximum force in ball compression correlated well with the maximum acceleration from impact test (r2 = 0.75), and with a band magnitude parameter from acoustic test (r2 = ?0.71). Combining impact and acoustic parameters, the multiple correlation coefficient increases up to 0.91 (adjusted R2 = 0.82) in the prediction of the maximum force in ball compression. Classification models based on both non-destructive parameters and sorting peaches into two classes of firmness, showed scores of well classified higher than 90%. |
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