The use of a diffusional model in determining the permeability of corn pericarp

Fick's diffusional model was used to fit drying curves of corn kernel in which the endosperm and germ were modeled as a homogeneous sphere with the pericarp being part of the external mass transfer resistance. Drying curves of whole and dehulled kernels were determined at 50°C and 60°C together...

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Autor principal: Tolaba, M.P
Otros Autores: Suarez, C., Viollaz, P.E
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1990
Acceso en línea:Registro en Scopus
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Registro en la Biblioteca Digital
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100 1 |a Tolaba, M.P. 
245 1 4 |a The use of a diffusional model in determining the permeability of corn pericarp 
260 |c 1990 
270 1 0 |m Tolaba, M.P. 
506 |2 openaire  |e Política editorial 
504 |a Crank, Park, (1968) Diffusion in Polymers, , Academic Press, London and New York 
504 |a Henderson, Physical absorption of non-uniform surfaces (1952) J. Chem. Phys., 33, pp. 29-32 
504 |a Luikov, (1968) Analytical Heat Diffusion Theory, , Academic Press, London and New York 
504 |a MacMasters, Important aspects of kernel structure (1962) Transactions of the ASAE, 5, pp. 247-249 
504 |a Purdy, Crane, Influence of pericarp on diffusional drying rate in ‘Mature’ corn (1967) Crop Science, 7, pp. 379-381 
504 |a Suarez, Effectiveness of ethyl oleate dipping, steam blanching and other pretreatments on drying of corn kernels (1987) Lebensm.-Wiss. u.-Technol., 20, pp. 123-127 
504 |a Suarez, Loncin, Chirife, A preliminary study on the effect of ethyl oleate dipping treatment on drying rate of grain corn (1984) Journal of Food Science, 49, pp. 236-238 
504 |a Syarief, Gustafson, Morey, Moisture diffusion coefficients for yellow-dent corn components (1987) Trans. ASAE, 30 (2), pp. 522-528 
504 |a Walton, White, Ross, A cellular diffusion-based drying model of corn (1988) Trans. ASAE, 31 (1), pp. 279-283 
504 |a Wolf, Buzan, MacMasters, Rist, Structure of the mature corn kernel. II. Microscopic structure of pericarp, seed, coat, and hilar layer of dent corn (1952) Cereal Chemistry, 29, pp. 335-347 
520 3 |a Fick's diffusional model was used to fit drying curves of corn kernel in which the endosperm and germ were modeled as a homogeneous sphere with the pericarp being part of the external mass transfer resistance. Drying curves of whole and dehulled kernels were determined at 50°C and 60°C together with the equilibrium moisture contents at the respective temperatures. Diffusion coefficients for the corn kernel without pericarp and for the pericarp alone were determined by fitting the experimental drying curves to the diffusional model. It was found that moisture diffuses about eight times faster through the endosperm and germ than through the pericarp. The permeabilities of the pericarp at 50°C and 60°C were 1·8 × 10-7 and 1·6 × 10-7 g cm/cm2 atm s, respectively. © 1990.  |l eng 
593 |a Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, (1428) Buenos Aires, Argentina, Argentina 
690 1 0 |a DIFFUSION--MATHEMATICAL MODELS 
690 1 0 |a DRYING--MATHEMATICAL MODELS 
690 1 0 |a MOISTURE 
690 1 0 |a CORN KERNELS 
690 1 0 |a CORN PERICARP PERMEABILITY DETERMINATION 
690 1 0 |a FOOD PRODUCTS 
700 1 |a Suarez, C. 
700 1 |a Viollaz, P.E. 
773 0 |d 1990  |g v. 12  |h pp. 53-66  |k n. 1  |p J Food Eng  |x 02608774  |w (AR-BaUEN)CENRE-5580  |t Journal of Food Engineering 
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856 4 0 |u https://doi.org/10.1016/0260-8774(90)90019-5  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_02608774_v12_n1_p53_Tolaba  |y Handle 
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