Determination of physical, mechanical, and structural seed properties of pepper cultivars

Abstract

A b s t r a c t. The aim of the present study was to determine various physical, mechanical, and structural characteristics of seed of pepper cultivars Yağlık Kapya, Demre Sivri, Yalova Carliston, Kandil Dolma, and Cin Sus Yediveren, which are grown extensively in Turkey, with initial moisture content ranging between 7.03 and 7.21% (w.b.). Width, length, and thickness were found to be in the range of 3.00-3.72, 3.43-4.40, and 0.66-0.82 mm, respectively. It was revealed that sphericity of the seeds of Yağlık Kapya, Demre Sivri, Yalova Carliston, Kandil Dolma, and Cin Sus Yediveren were 51, 57, 56, 51 and 57%, respectively. In terms of the roundness which ranges between 76 and 85% depending on pepper cultivars. The aspect ratio of Yağlık Kapya, Demre Sivri, Yalova Carliston, Kandil Dolma, and Cin Sus Yediveren were determined to be 84.60, 88.04, 94.43, 85.55, and 87.67%, respectively. It was also noted that the porosity of the pepper seeds was in the range of 44.94-49.61%. Besides, we found that as the weight of pepper seeds increased, their terminal velocity increased accordingly, and thus terminal velocities were found to be 2.87-4.66 m s -1 . In the current study, the static friction angle and coefficients of the cultivars were determined by means of six different plates including aluminium, stainless steel, galvanized iron, rubber, glass, and plywood. The plywood plate was found to be the least slippery; consequently, the static friction angle and coefficient were determined to be the highest for the plywood plate.

The Impact of Moisture and Number of Contact Points on the Process of Friction in Plant Granular Materials

“…All of these studies have indicated an increase in static and kinetic friction along with an increase in moisture for plant granular materials. Many authors have taken into account the type of construction material as a factor influencing the value of the force of friction in their works [10,12,16,17,19,[21][22][23][24]. A further factor whose influence on force of friction has been studied is the speed of motion across a surface.…”

Physical, mechanical, functional and chemical properties of Mexican pink pinion (Pinus pinea L.)

“…This property is important in the development of the hopper and design of bark for this seed. The Ø of PN and PK was higher than that reported for pepper 51-57% (Alibas and Koksal 2015), pumpkin 45.36% (Rodrı ´guez-Miranda et al 2016), melon 36.85% (Mansouri et al 2017), peanut 51.6% (Aydin, 2007), kidney bean 62.12% (Wani et al 2017) and faba bean 63.47% (Altuntas ¸and Yıldız, 2007), being more spherical than these.…”

Flow-specific physical properties of coconut flours

“…The wall surface had a more significant influence than moisture content in rolling friction (Table 4). Plywood was reported to offer higher friction for pepper seed, jatropha seed, pigeon pea, gram, canola meal, and neem nut, and the coefficient of friction increased with moisture content (Alibas and Koksal, 2015;Dutta et al, 1988;Garnayak et al, 2008;Kulkelko et al, 1988;Shepherd and Bhardwaj, 1986;Visvanathan et al, 1996). 2.…”