Balkabağı Cucurbita pepo L. ve Karpuz Citrullus lanatus L. Tohumlarının Bazı Fiziksel Özellikleri

Year 2008, Volume: 14 Issue: 01, 62 - 69, 01.01.2008

Ebubekir Altuntaş

https://doi.org/10.1501/Tarimbil_0000000519

Cited By: 2

Abstract

Kabak Cucurbita pepo L. ve karpuz Citrullus lanatus L. tohumlarının sırasıyla %9,87 ve %2,87 k.b. % kuru baz nem içeriklerindeki bazı fiziksel özellikleri belirlenmiştir. Ortalama uzunluk, genişlik, kalınlık ve geometrik ortalama çap değerleri kabak tohumu için sırasıyla 19,92; 11,30; 3,22; 9,71 mm ve karpuz tohumu için 13,28; 8,00; 2,64; 6,52 mm olarak belirlenmiştir. Ortalama 1000 tane ağırlığı, küresellik, doğal yığılma açısı, hacim ağırlığı, kütlesel yoğunluk, tane hacmi, yüzey alanı, porozite değerleri sırasıyla kabak tohumu için 261,2 g; 60,55%; 23,9°; 321,3 kg/m3; 784,3 kg/m3; 0,11 cm3; 2,54 cm2 ve 58,9% olarak, karpuz tohumu için 14,62 g; 49,2%; 19,1°; 412,2 kg/m3; 1543,3 kg/m3; 0,030 cm3; 0,48 cm2 and 47,45% olarak belirlenmiştir. Ortalama dinamik sürtünme katsayıları galvaniz sac, sunta, sac, kontrplak ve lastik yüzeylere göre kabak tohumu için sırasıyla 0,29; 0,24; 0,32; 0,36 ve 0,61, karpuz tohumu için 0,21; 0,45; 0,41; 0,57 and 0,94 olarak bulunurken, statik sürtünme katsayısı değerleri ise aynı sürtünme yüzeyleri için sırasıyla, kabak tohumunde, 0,37; 0,38; 0,38; 0,43 and 0,74 ve karpuz tohumunde ise, 0,27; 0,54; 0,48; 0,70 and 1,11 olarak belirlenmiştir. Maksimum statik ve dinamik sürtünme katsayıları lastik yüzeyde bulunmuştur

Keywords

Kabak Cucurbita pepo L. tohumu ve karpuz Citrullus lanatus L. tohumu, fiziksel özellikler

Some Physical Properties of Pumpkin Cucurbita pepo L. and Watermelon Citrullus lanatus L. Seeds

Abstract

Some physical properties of pumpkin Cucurbita pepo L. and watermelon Citrullus lanatus L. seeds were determined at a moisture content of 9.87% and 2.87% dry basis , respectively. The mean values of length, width, thickness and geometric mean diameter were 19.92, 11.30, 3.22, 9.71 mm for pumpkin seeds, and 13.28, 8.00, 2.64, 6.52 mm for watermelon seeds, respectively. The mean 1000 seed mass, sphericity, angle of repose, bulk and true densities, single seed volume, surface area, porosity values were obtained as 261.2 g, 60.55%, 23.9°, 321.3 kg/m3, 784.3 kg/m3, 0.11 cm3, 2.54 cm2 and 58.9%, respecitvely for pumpkin seed; and 14.62 g, 49.2%, 19.1°, 412.2 kg/m3, 1543.3 kg/m3, 0.03 cm3, 0.48 cm2 and 47.45%, respectively for watermelon seed. The mean values of dynamic coefficient of friction against galvanized steel, chipboard, mild steel, plywood and rubber surfaces were 0.29, 0.24, 0.32, 0.36 and 0.61 for pumpkin seed, and 0.21, 0.45, 0.41, 0.57 and 0.94 for watermelon seed; while the values of static coefficient of friction were 0.37, 0.38, 0.38, 0.43 and 0.74 for pumpkin seed and 0.27, 0.54, 0.48, 0.70 and 1.11 for watermelon seed, respectively. The maximum static and dynamic coefficients of friction was found for rubber surface

Keywords

Pumpkin Cucurbita pepo L. seed, watermelon Citrullus lanatus L. seed, physical properties

References

• Altuntas, E., E. Ozgoz and O. F. Taser. 2005. Some physical properties of fenugreek (Trigonella foenum-graceum L.) seeds. Journal of Food Engineering 71: 37-43.
• Altuntas, E. and H. Demirtola. 2007. Effect of moisture content on physical properties of some grain legume seeds. New Zealand Journal of Crop and Horticultural Science 35(4): 423-433.
• Altuntas, E. and Y. Karadag. 2006. Some physical and mechanical properties of sainfoin (Onobrychis sativa Lam.), grasspea (Lathyrus sativus L.) and bitter vetch (Vicia ervilia (L.) Willd.) seeds. Journal of Applied Science 6(6): 1373-1379.
• Amin, M. N., M. A. Hossain and K.C. Roy. 2004. Effects of moisture content on some physical properties of lentil grains. Journal of Food Engineering 65: 83-87.
• Artwatermelon, 2007. http://www.foodreference.com. Accessed to web: 12.09.2007.
• Baryeh, E. A. 2002. Physical properties of millet. Journal of Food Engineering 51: 39-46.
• Deshpande, S. D., S. Bal and T. P. Ojha. 1993. Physical properties of soybean grains. Journal of Agricultural Engineering Research 56: 89-92.
• FAO, 2005. Statistical database. http://faostat.fao.org. Accessed to web 12.11.2007.
• Herbs_Pumkin, 2007.http://www.herbs2000.com/herbs. Accessed to web, 21.10.2007.
• Hopkins,S.2007.Watermelon_An_Ingredient_For_Skin_Care. http://www.redsofts.com/articles/read/460/2448. Accessed to web, 31.10.2007.
• Kaleemullah, S. and J. J. Gunasekar. 2002. Moisture- dependent physical properties of arecanut trues. Biosystem Engineering 82 (3): 331-338.
• Kara, M., N. Turgut, Y. Erkmen and İ. E. Güler. 1997. Determination of coefficient of friction of some granules. 17 National Symposium on Mechanization in Agriculture. (pp. 609-614). Tokat. Turkey (in Turkish).
• Kasap A, and E. Altuntas. 2006. Physical Properties of Monogerm Sugarbeet (Beta vulgaris var. altissima) seeds. New Zealand Journal of Crop and Horticultural Science 34: 311-318.
• Mohsenin, N. N. 1970. Physical properties of plant and animal materials. Gordon and Breach Science Publishers, New York.
• Ogunjimi, L. A. O., N. A. Aviara and O. A. Aregbesola. 2002. Some engineering properties of locust bean seed. J.Food Engineering 55: 273-277.
• Olajide, J. D. and B. I. O. Ade-Omowaye. 1999. Some physical properties of locust bean seed. Journal of Agricultural Engineering Research 74 (2): 213-215.
• Ozarslan, C. 2002. Some physical properties of cotton grain. Biosystems Engineering 83 (2): 169-174.
• Ozgoz, E., O. F. Taser and E. Altuntas. 2005. Some Physical properties of Yarma Bulgur. Journal of Applied Science 5(5): 838-840.
• Sacilik, K., R. Öztürk and R. Keskin. 2003. Some physical properties of hemp grain. Biosystems Engineering 86 (2): 213-215.
• Sitkei, G. 1976. Mechanic of Agricultural Materials. Akademia Kiado, Budapest.
• Sönmez, N., H. H. A. Alizadeh, R. Öztürk and A. İ. Acar. 2007. Some Physical Properties of Gilaburu Seed. Journal of Agricultural Machinery Science. Vol:13, Number:3: 308-311.
• Suthar, S. H. and S. K. Das. 1996. Some physical properties of karingda [Citrus lanatus (thumb) mansf] grains. Journal of Agricultural Engineering Research, 65(1),15- 22.
• Taser, O. F., E. Altuntas and E. Ozgoz. 2005. Physical properties of Hungarian and common vetch seeds. Journal of Applied Science 5(2): 323,326.
• Tunde-Akindute, T. Y. and B. O. Akindute. 2004. Some physical properties of sesame seed. Biosystems Engineering 88: 127-129.
• Vilche, C., Gely, M., and E. Santalla (2003). Physical properties of quinoa grains. Biosystems Engineering 86 (1): 59-65.
• Viswanathan, P. T., L. Palanisamy and E. Sreenarayanan. 1996. Physical properties of neem nut. Journal of Agricultural Engineering Research 63: 19-26.
• Watermelon, 2007.http://www.kalyx.com/store/proddetail.cfm. Accessed to web, 21.10.2007.