Physical Properties of Potato Tubers CV. Analytic Cultivated in Iran

Abstract

SummaryThe objective of the experiments was to study some physical properties of potato tubers, such as dimensions, weight, projected area, sliding and rolling friction properties, in order to determine the best post-harvest options. Mean values of weight, length, width, thickness and CPA were 136.69 g, 78.99 mm, 57.12 mm, 50.44 mm, and 33.12 cm 2 , respectively. The lowest values of the coefficients of rolling and sliding friction were obtained for sheet glass. Tuber mass was predicted based on the dimensions, projected area and volume. Linear models and nonlinear models were investigated. The results indicated that best model for predicting tuber mass was based on projected area with R 2 = 0.99.

PENENTUAN SIFAT FISIK KENTANG (Solanum tuberosum L.): SPHERICITY, LUAS PERMUKAAN VOLUME DAN DENSITAS

“…Dua varietas kentang India yaitu varietas Kufri Jyoti dan Kufri Sinduri masing-masing memiliki sphericity 82,45±9,12 dan 86,68±3,25% (Singh, dkk., 2006). Sedangkan hasil penelitian lain menunjukkan bahwa kentang memiliki nilai sphericity rata-rata sebesar 0,84 (Dalvand, 2011). Berdasarkan nilai tersebut, nilai sphericity kentang dapat disimpulkan berkisar antara 0,84-0,92.…”

“…Berdasarkan hasil perhitungan dan Tabel 1 diketahui bahwa kentang memiliki luas permukaan sekitar 27,75 cm2. Nilai ini sangat jauh berbeda dengan hasil yang lain dimana kentang Iran memiliki luas permukaan sekitar 138,16 cm2 (Dalvand, 2011) sedangkan luas permukaan kentang Varietas India berkisar 13-35 cm2 (Singh, dkk., 2006). Berdasarkan nilai ini dapat diketahui bahwa luas permukaan kentang dipengaruhi oleh jenis dan varietas kentang itu sendiri.…”

“…Nilai densitas kentang untuk pengukuran volume yang berbeda (Tabel 2) masing-masing adalah 1,01 g.cm-3 dan 1,08 g.cm-3. Nilai ini tidak jauh berbeda dengan hasil lain dimana nilai densitas rata-rata kentang Iran sekitar 1,06 g.cm-3 (Dalvand, 2011), sedangkan untuk varietas India seperti Kufri Jyoti dan Kufri Sinduri masing-masing memiliki densitas sekitar 1,18 g.cm-3 dan 1,10 g.cm-3 (Singh, dkk., 2006).…”

Impact of soil compaction on the engineering properties of potato tubers

“…In industrial and developing countries, potatoes are particularly important in the food chain among agricultural products. Potatoes contain an amount of energy equivalent to 830 calories per kilogram [9] . There are some situations in which the determination of relationships among physical characteristics of agricultural products is necessary; for example, some fruits are graded by size [9] .…”

“…Potatoes contain an amount of energy equivalent to 830 calories per kilogram [9] . There are some situations in which the determination of relationships among physical characteristics of agricultural products is necessary; for example, some fruits are graded by size [9] . Similarly, physical characteristics of agricultural products are the most important parameters for the design of grading, handling, processing and packaging systems, these physical characteristics include the mass, shape and volume, and the width, length and thickness [10,11] .…”