CREEP BEHAVIOR OF POTATO TUBERS DURING STORAGE | ||||
| Misr Journal of Agricultural Engineering | ||||
| Article 42, Volume 34, Issue 4, October 2017, Page 2277-2290 PDF (936.88 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjae.2017.97500 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Soliman N. Soliman1; Azhar E. El-Sayed2 | ||||
| 1Prof. of Food Eng., Fac. of Ag., Alexandria Univ. Egypt. | ||||
| 2Res., Ag. Eng. Res. Inst., Ag. Res. Center, Dokki, Giza, Egypt. | ||||
| Abstract | ||||
| The aim of this investigation is to study the creep behavior of Lady Rosetta potato tuber variety of sand and black soil cultivarsunder different storage treatments. The fresh harvested tubers tend to be very brittle. Four creep apparatuses were develop using a digital micrometer, which enable to feed the data into the computer and instantaneous reading of deformation with time at constant stress (62.45 kPa) during a duration time of 60 minutes. The creep curves were analyzed and the constants related to Burger rheological models were determined. For fresh potato tubers, all rheological model constants were slightly increased with tuber mass, rheological model constants of black soil cultivar were larger than that for sand soil cultivar. The time of retardation of the rheological model was found to be constant around 621 ± 5 seconds for each of sand and black soil cultivars. | ||||
| References | ||||
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