Artículos de revistas
Mechanical Properties Of Castor Beans Subject To Different Drying Temperatures Aiming To Disrupt The Bean Coat
Registro en:
Engenharia Agricola. Sociedade Brasileira De Engenharia Agricola, v. 34, n. 1, p. 93 - 101, 2014.
1006916
10.1590/S0100-69162014000100011
2-s2.0-84897095681
Autor
Bastos A.C.
Ferraz A.C.O.
Institución
Resumen
In castor oil extraction process, the bean coat is abrasive to the equipment and releases substances that modify the oil color, reducing its quality. A potential solution would be to run the extraction by compressing only the endosperm. Due to lack of information, the objective of this study was to evaluate the influence of forced air drying at 40, 60, 80 and 100 °C and farmyard drying, in the mechanical properties of the beans, aiming to break the bean coat. Castor beans were subjected to compression tests, in two perpendicular directions, at a strain rate of 0.6 mm.s-1. Average values of force, deformation energy, strain, all at rupture, and stiffness were used to evaluate the effects of dehydration. It was observed that the heat treatments did not alter the mechanical properties of castor beans, the strain and stiffness values discriminate the differences between the directions and had the lowest coefficients of variation. It was concluded that forced air drying, more costly than farmyard drying, does not bring benefits to the decortication. However, regardless the heat treatment used, the mechanical stress lengthwise is the most suitable to promote decortication. 34 1 93 101 Araújo, M.C., Ferraz, A.C.O., Efeito da umidificação, tratamento térmico e deformação sobre a decorticação da castanha de caju 'CCP 76' por meio de impacto único e direcionado (2006) Engenharia Agrícola, Jaboticabal, 26, pp. 335-653 Araújo, M.C., Ferraz, A.C.O., Características físicas e mecânicas do endocarpo e da amêndoa da castanha de caju "CCP 76" antes e após tratamento térmico (2008) Engenharia Agrícola, Jaboticabal, 28 (3), pp. 565-578 (2009), BRASIL. Ministério da Agricultura, Pecuária e Abastecimento. Regras para análise de sementes. Brasília: Secretaria de Defesa AgropecuáriaCarvalho, M.L.M., Alves, R.A., Oliveira, L.M., Radiographic analysis in castor bean beans (Ricinus communis L.) (2010) Revista brasileira de sementes, Viçosa, MG, 32 (1), pp. 170-175 Goneli, A.L.D., Corrêa, P.C., Magalhães de, A.F.E., Baptestini, F.M., Contração volumétrica e forma dos frutos de mamona durante a secagem (2011) Acta Scentiarum Agronomy, Maringá, 33 (1) Goneli, A.L.D., Corrêa, P.C., Botelho, F.M., Oliveira de, G.H.H., Santosde, S.E., Propriedades físicas dos frutos de mamona durante a secagem (2008) Revista Brasileira de Armazenamento, Viçosa, 33, pp. 148-155 Goneli, A.L.D., (2008) Variação das propriedades físico-mecânicas e da qualidade da mamona (Ricinus communis L, , durante a secagem e o armazenamento. 2008. 199f. Tese (Doutorado), Universidade Federal de Viçosa, Viçosa Gupta, R.K., Das, S.K., Fracture resistance of sunflower bean and kernel to compressive loading (2000) Journal of Food Engineering, Essex, 46 (1), pp. 1-8 Mohsenin, N.N., (1986) Physical properties of plant and animal materials, p. 841. , New York: Gordon and Breach Publishers Olaoye, O.J., Some physical properties of Castor Nut relevant to the design of processing equipment (2000) Journal of Agricultural Engineering Research, London, 77, pp. 113-118 Pliestic, S., Dobricevic, N., Filipovic, D., Gospodaric, Z., Physical Properties of Filbert Nut and Kernel (2006) Biosystems Engineering, London, 93 (2), pp. 173-178 Resende, O., Corrêa, P.C., Ribeiro, D.M., Figueiredo Neto, A., Comportamento mecânico dos grãos de feijão submetidos a compressão (2007) Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, 11 (4), pp. 404-409 Ribeiro, D.M., Corrêa, P.C., Furtado, B.F., Goneli, A.L.D., Resende, Osvaldo Propriedades mecânicas dos grãos de soja em função do teor de água (2007) Engenharia Agrícola, Jaboticabal, 27 (2), pp. 493-500 Rittner, H., (1996) Óleo de mamona e derivados, , Editado pelo autor Sirisomboon, P., Kitchaiya, P., Pholpho, T., Mahuttanyavanitch, W., Physical and mechanical properties of Jatropha curcas L. fruits, nuts and kernels (2007) Biosystems Engineering, London, 97 (2), pp. 201-207