A Method for Measuring the Firmness of Cherry Tomatoes Based on the Displacement of Their Surface Caused by the Spraying of Compressed Air
| Autor: | Osamu Kinoshita, Dai Matsuda, Masateru Nagata |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Shokubutsu Kojo Gakkaishi. 15:67-71 |
| ISSN: | 1880-3555 0918-6638 |
| DOI: | 10.2525/jshita.15.67 |
| Popis: | A method for measuring the firmness of cherry tomatoes based on the displacement of their surface caused by the spraying of compressed air was studied. The main results were as follows : 1) If the air pressure, the inner diameter of the nozzle for spraying the compressed air, and the distance between the tip of the nozzle and the fruit surface were given suitable values, and if the fruit was secured so that it would not shake, the surface of the fruit would be only slightly deformed, and the displacement of the fruit surface could be measured precisely ; 2) The coefficient of correlation between the measurements obtained by this method and measurements obtained by a commercial fruit firmness meter was about -0. 95 ; and 3) When the displacement was calculated from the value that was measured by a laser displacement sensor, 0 mV was the optimal standard value. Thus, it appears that this method can be used to measure the firmness of cherry tomatoes. |
| Databáze: | OpenAIRE |
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