Hüseyin ÖNEN, EBUBEKİR ALTUNTAŞ, ENGİN ÖZGÖZ, Mustafa BAYRAM, Selçuk ÖZCAN

Madımak tohumunun (Polygonum cognatum Meissn.) fiziksel özelliklerine nem içeriğinin etkisi

Bu çalışmada, madımak (Polygonum cognatum Meissn.) tohumunun bazı fiziksel özelliklerine nem içeriğinin etkisi belirlenmiştir. Nem içerikleri sırasıyla %7,95; 13,68 ve 19.14 (kuru baza göre) olarak belirlendi. Ortalama geometrik ortalama çap, birim ağırlık, küresellik, 1000 dane ağırlığı ve doğal yığıılma açısı nem içeriğinin %7,95’den %19.14’e kadar artışına göre sırasıyla 1,85’den 1.94 mm’e, 0,0040’dan 0.0046 g’a, %66.21’den 67.37’e, 3,32’den 3,74 g’a kadar ve 18,36’dan 25,00°’ye kadar değişiklik göstermiştir. Tohum hacmi, yığın hacim ağırlığı ve yüzey alanı değerleri nem içeriği artışına göre; 3,357 mm3’den 3,894 mm3’e, 696,11 kg m-3’den 707,73 kg m-3’e ve 10,786’dan 11,867 mm2’ e artış gösterirken, tane hacim ağırlığı ve porozite değerleri; %57,93’den %40,16’a 1654,69 kg m-3’den 1182,64 kg m-3’e azalmıştır. Statik sürtünme katsayısı değerleri, farklı yüzeyler için nem içeriği artışıyla artış göstermiştir. Madımak tohumları çok küçük boyutlarda olduğu için yüksek nem içeriklerinde kolayca ayrılabilir, dolayısıyla bu küçük tohumların ekimini ve çimlenme oranının artışına yardımcı olabilir.

Anahtar Kelimeler:

Madımak (Polygonum cognatum Meissn.), tohumlar, nem içeriği, fiziksel özellikler

Moisture Effect on Physical Properties of Knotweed (Polygonum cognatum Meissn.) seeds

In this study, the effects of moisture content on some of physical properties of madimak (Polygonum cognatum Meissn.) seeds were investigated. Moisture contents of seeds were 7.95, 13.68 and 19.14% d.b. (dry basis), respectively. The average geometric mean diameter, unit mass, sphericity, thousand-seed mass and angle of repose ranged from 1.85 to 1.94 mm, 0.0040 to 0.0046 g, 66.21 to 67.37%, 3.32 to 3.74 g and 18.36 to 25.00° as the moisture content increased from 7.95 to 19.14% d.b., respectively. Bulk density and porosity were decreased from 696.11 to 707.73 kg m-3, 57.93 to 40.16%, whereas the seed volume, true density and surface area were increased from 3.357 to 3.894 mm3, 1654.69 to 1182.64 kg m-3, and 10.786 to 11.867 mm2 as the moisture content increased, respectively. The static coefficient of friction on various surfaces linearly increased with an increase in moisture content. Since madimak seeds are in small sizes, they can easily be separated at higher moisture contents which will also help planting of small seeds and enhance germination rate.

Keywords:

Madimak (Polygonum cognatum Meissn.), seeds, moisture content, physical properties,

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Altuntaş E, Özgöz E and Taşer ÖF (2005). Some physical properties of fenugreek (Trigonella foenumgraceum L.) seeds. Journal of Food Engineering, 71: 37–43.
Amin MN, Hossain MA and Roy KC (2004). Effects of moisture content on some physical properties of lentil seeds. Journal of Food Engineering, 65: 83
Aviara NA, Gwandzang MI and Haque M (1999). Physical properties of guna seeds. Journal of Agricultural Engineering Research, 73: 105-111.
Balasubramanian D (2001). Physical properties of raw cashew nut. Journal of Agricultural Engineering Research, 78: 291-297.
Baryeh EA (2002). Physical properties of millet. Journal of Food Engineering, 51: 39-46.
Baryeh EA and Mangope BK (2002). Some physical properties of QP-38 variety pigeon pea. Journal of Food Engineering, 56: 59-65.
Baümler E, Cuniberti A, Nolasco SM and Riccobene IC (2006). Moisture-dependent physical and compression properties of safflower seed. Journal of Food Engineering, 79: 134–140.
Coşkuner Y and Karababa E (2007). Some physical properties of flaxseed. Journal of Food Engineering, 78: 1067–1073.
Çarman K (1996). Some physical properties of lentil grains. Journal of Agricultural Engineering Research, 63: 87-92.
Davis, P.H. (1967). Flora of Turkey. Vol. 2, University of Edinburg, England.
Deshpande SD, Bal S and Ojha TP (1993). Physical properties of soybean grains. Journal of Agricultural Engineering Research, 56: 89-92.
Garnayak DK, Pradhan RC, Naik SN and Bhatnagar N (2008). Moisture-dependent physical properties of jatropha seed (Jatropha curcas L.). Industrial Crops and Production, 27: 123-129.
Gezer I, Haciseferogullari H and Demir F (2002). Some physical properties of Hacihaliloglu apricot pit and its kernel. Journal of Food Engineering, 56, 49-57. Gupta RK and Das SK (1997). Physical properties of sunflower seeds. J. Agric. Eng. Res., 66, 1-8.
Joshi DC, Das SK and Mukherjee RK (1993). Physical properties of pumpkin grains. Journal of Agricultural Engineering Research, 54: 219-229. Kaleemullah S and Gunasekar JJ (2002). Moisturedependet physical properties of arecanut trues. Biosystems Engineering, 82: 331-338.
Mohsenin NN (1970). Physical properties of plant and animal materials. Gordon and Breach Science Publishers, New York.
Nimkar PM and Chattopadhyay PK (2001). Some physical properties of green gram. Journal of Agricultural Engineering Research, 80: 183-189.
Ogunjimi LAO, Aviara N.A and Aregbesola OA (2002). Some engineering properties of locust bean seed. Journal of Food Engineering, 55: 95-99.
Olajide JD and Ade-Omowaye BIO (1999). Some physical properties of locust bean seed. Journal of Agricultural Engineering Research, 74: 213-215.
Omobuwajo TO, Sanni LA and Balami YA (2000). Physical properties of sorrel (Hibiscus sabdariffa) seeds. Journal of Food Engineering, 45: 37-41.
Öğüt H (1998). Some physical properties of white lupin. Journal of Agricultural Engineering Research, 69: 273-2
Onen H, Yılar M and Kaya C (2009). Phenoleic composition of madimak (Polygonum cognatum Meissn.) plants. 3 rd Plant protection Congress. Abstract Book Page 275. Van, Turkey.
Onen H, Parmaksız I and Gebologlu N (2011). Reproduction capacity of Polygonum cognatum Meissn. (Knotweed). ASA, CSSA, and SSSA International Annual Meetings, Oct. 16-19, 2011, San Antonio, TX, ASA Section: Global Agronomy.
Özarslan C (2002). Some physical properties of cotton grain. Biosystems Engineering, 83: 169-174.
Sacilik K, Ozturk R and Keskin R (2003). Some physical properties of hemp grain. Biosystems Engineering, 86: 213-215.
Saiedirad MH, Tabatabaeefar A, Borghei A, Mirsalehi M, Badi F and Ghasemi VM (2008). Effects of moisture content, seed size, loading rate and seed orientation on force and energy required for fracturing cumin seed (Cuminum cyminum Linn.) under quasi-static loading. Journal of Food Engineering, 86: 56–572.
Selvi KC, Pinar, Y and Yeşiloğlu E (2006). Some physical properties of linseed. Biosystems Engineering, 95 (4), 607–612.
Sitkei G (1976). Mechanic of Agricultural Materials. Akademia Kiado, Budapest.
Suthar SH and Das SK (1996). Some physical properties of karingda [Citrus lanatus (thumb) mansf] grains. Journal of Agricultural Engineering Research, 65: 15Tabatabeefar A (2003). Moisture-dependent physical properties of wheat. International Agrophysics, 17: 207–211.
Tunde-Akintunde TY and Akintunde BO (2004). Some physical properties of sesame seed. Biosystems Engineering, 88: 127–129.
Vilche C, Gely M and Santalla E (2003). Physical properties of quinoa grains. Biosystems Engineering, 86: 59-65.
Visvanathan R, Palanisamy PT, Gothandapani L and Sreenarayanan VV (1996). Physical properties of neem nut. Journal of Agricultural Engineering Research, 63: 19-25.
Vishwakarma RK, Shivhare US and Nanda SK (2012). Physical Properties of Guar Seeds. Food and Bioprocess Technology, 5: 1364–1371.
Yazgan A ve Saglam N (1992). A research on culture of knotweed (Polygonum cognatum M.). Turkey I. National Horticulture Congress, Volume II, 21-23. Yalcın I and Özarslan C (2004). Physical properties of vetch seed. Biosystems Engineering, 88: 507–512. Yıldırım A, Mavi A and Kara AA (2003). Antioxidant and antimicrobial activities of Polygonum cognatum Meissn extracts. Journal of the Science of Food and Agriculture, 83: 64-69.
Yılar M, Özkurt M and Önen H (2006). Assessment the allelopathic potential of madimak (Polygonum cognatum Meissn.). Workshop on Allelopathy (The utilization of allelopathy in Turkey, Recent, Today, Future) Symposium Proceedings, pp. 57-58. Yalova.

Gaziosmanpaşa Üniversitesi Ziraat Fakültesi Dergisi-Cover

ISSN: 1300-2910
Yayın Aralığı: Yılda 3 Sayı
Başlangıç: 1985
Yayıncı: Tokat Gaziosmanpaşa Üniversitesi Ziraat Fakültesi Dergisi Yayın Ofisi