Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2006.1799.1806Vigna unguiculata L.) Grains]]>UnalHalil IsikEsref AlpsoyHuseyin Can9200699The physical properties of black-eyed pea were evaluated as a function of moisture content. In the moisture range from 10.82 to 31.76% d.b., the dimensions of the major (length), medium (width) and minor (thickness) axes varied from 9.15 to 10.45 mm, .67 to 7.31 mm and 6.01 to 6.55 mm, respectively. In the above moisture range, the arithmetic and geometric mean diameters increased from 7.28 to 8.10 mm and from 7.16 to 7.93 mm, respectively, while the sphericity decreased from 0.783 to 0.761. Thousand grain mass, surface area and projected area increased from 245.4 to 279.3 g, from 161.22 to 198.38 mm2 and from 57.75 to 68.18 mm2, respectively. In the moisture range from 10.82 to 31.76% d.b., the bulk density of the rewetted grain decreased from 637.80 to 602.48 kg m-3, true density increased from 1064.66 to 1205.99 kg m-3, porosity increased from 40.05 to 49.60%. The terminal velocity and angle of repose increased linearly from 4.98 to 5.44 m s-1 and 20.91 to 27.69°, respectively. The static coefficient of friction increased on six structural surfaces namely, rubber (0.380-0.434), galvanised iron (0.355-0.399), aluminium (0.346-0.383), stainless steel (0.333-0.375), glass (0.323-0.374) and medium density fibreboard (0.278-0.342) as the moisture content increased from 10.82 to 31.76% d.b.. The shelling resistance of black-eyed pea decreased as the moisture content increased and the highest force were obtained while loading along the Z-axis (thickness).]]>Aviara, N.A., E. Mamman and B. Umar,2005Balanites aegyptiaca nuts.]]>92325334Aydin, C., H. Ogut and M. Konak,200282231234Baryeh, E.A. and B.K. Mangope,2003565965Calisir, S., M. Ozcan, H. Haciseferogullari and M.U. Yildiz,2005Hibiscus esculenta L.) seeds.]]>687378Chandrasekar, V. and R. Viswanathan,199973227234Coskun, M.B., I. Yalcin and C. Ozarslan,2006Zea mays saccharata Sturt.).]]>74523528Davis, D.W., E.A. Oelke, E.S. Oplinger, J.D. Doll, C.V. Hanson and D.H. Putnam,19911991Deshpande, S.D., S. Bal and T.P. Ojha,1993568998Dursun, E. and I. Dursun,200592237245Ehlers, J.D. and A.E. Hall,1997Vigna unguiculata L. Walp.).]]>53187204FAO,20032003Gupta, R.K. and S.K. Das,19976618Jefferson Inst.,19991st Edn.,Kaleemullah, S. and J.J. Gunasekar,200282331338Konak, M., K. Carman and C. Aydin,2002827378Mohsenin, N.N., 19701st Edn.,Nimkar, P.M. and P.K. Chattopadhyay,200180183189Nimkar, P.M., D.S. Mandwe and R.M. Dudhe,200591183189Ogut, H.,199869273277Olajide, J.O. and B.I.O. Ade-Omowage,1999741522Ozarslan, C.,200283169174Ozdemir, F. and I. Akinci,200463341347Peksen, E. and C. Artik,2004Vigna unguiculata L. Walp) genotypes from Turkey for seed yield and yield related characters.]]>3137140Sacilik, K., R. Ozturk and R. Keskin,200386191198Sahoo, P.K. and A.P. Srivastava,200283441448Singh, K.K. and T.K. Goswami,1996649398Singh, B.B., O.L. Chambliss and B. Sharma,19971997SIS,20041st Edn.,Wikipedia,20062006Suthar, S.H. and S.K. Das,1996Citrullus lanatus (thumb) Mansf.] seeds.]]>651522Tang, J. and S. Sokhansanj,199356313326Tunde-Akintunde, T.Y. and B.O. Akintunde,200488127129Vilche, C., M. Gely and E. Santalla,2003865965Yalcin, I. and C. Ozarslan,200488507512FAO.,2006Vigna unguiculata (L.) Walp.]]>2006