Physical and rheological characterization of seeds of three legume trees

The Chilean algarrobo ("Prosopis chilensis (Mol) Stuntz), the tara (Caesalpinea spinosa (Mol) Kuntze) and the honey locust (Gleditsia triacanthos L) have an interesting potential for the development of arid zones. The endosperm of the seeds of these species has a galactomannan-type gum which ha...

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Autores principales:	Estévez,Ana María, Escobar,Berta, Sepúlveda,Marcela
Lenguaje:	English
Publicado:	Universidad de Tarapacá. Facultad de Ciencias Agronómicas 2012
Materias:	algarrobo tara honey locust hydrocolloids galactomannans
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292012000100010
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spelling	oai:scielo:S0718-342920120001000102013-01-23Physical and rheological characterization of seeds of three legume treesEstévez,Ana MaríaEscobar,BertaSepúlveda,Marcela algarrobo tara honey locust hydrocolloids galactomannans The Chilean algarrobo ("Prosopis chilensis (Mol) Stuntz), the tara (Caesalpinea spinosa (Mol) Kuntze) and the honey locust (Gleditsia triacanthos L) have an interesting potential for the development of arid zones. The endosperm of the seeds of these species has a galactomannan-type gum which has the property of thickening and stabilizing emulsions. This study evaluates the physical characteristics of the pods and seeds, and the rheological properties of the gums of these species. We studied fruits of five ecotypes of algarrobo (Coquimbo and Metropolitan Regions), of tara from the Coquimbo Region and of honey locust (three-spined acacia) from the Metropolitan Region. We measured the dimensions of the pods, number of seeds per pod, seed weight, gum yield and color parameters of the cotyledon and gum, and the rheological properties of the gums extracted. Gums were extracted manually and dried at 50° C. The seeds of algarrobo weighed 0.04 g; their gum yield varied between 25.5% and 31.5%. The seeds of tara weighed 0.14 g and those of the acacia 0.16 g, with a gum yield of 31.0% and 40.1%, respectively. The gums had high luminosity and high contribution of yellow, along with low contribution of red. The dispersions of all the studied gums showed a non-Newtonian Herschel-Bulkley behavior corresponding to an inelastic fluid, independent of time. The apparent viscosity of the gum of algarrobo fluctuated between 0.020 and 0.12; that of tara between 0.06 and 1.3, and that of honey locust between 0.034 and 0.08 Pa*s. The gums of these species have rheological characteristics which would allow their addition to foods.info:eu-repo/semantics/openAccessUniversidad de Tarapacá. Facultad de Ciencias AgronómicasIdesia (Arica) v.30 n.1 20122012-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292012000100010en10.4067/S0718-34292012000100010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	algarrobo tara honey locust hydrocolloids galactomannans
spellingShingle	algarrobo tara honey locust hydrocolloids galactomannans Estévez,Ana María Escobar,Berta Sepúlveda,Marcela Physical and rheological characterization of seeds of three legume trees
description	The Chilean algarrobo ("Prosopis chilensis (Mol) Stuntz), the tara (Caesalpinea spinosa (Mol) Kuntze) and the honey locust (Gleditsia triacanthos L) have an interesting potential for the development of arid zones. The endosperm of the seeds of these species has a galactomannan-type gum which has the property of thickening and stabilizing emulsions. This study evaluates the physical characteristics of the pods and seeds, and the rheological properties of the gums of these species. We studied fruits of five ecotypes of algarrobo (Coquimbo and Metropolitan Regions), of tara from the Coquimbo Region and of honey locust (three-spined acacia) from the Metropolitan Region. We measured the dimensions of the pods, number of seeds per pod, seed weight, gum yield and color parameters of the cotyledon and gum, and the rheological properties of the gums extracted. Gums were extracted manually and dried at 50° C. The seeds of algarrobo weighed 0.04 g; their gum yield varied between 25.5% and 31.5%. The seeds of tara weighed 0.14 g and those of the acacia 0.16 g, with a gum yield of 31.0% and 40.1%, respectively. The gums had high luminosity and high contribution of yellow, along with low contribution of red. The dispersions of all the studied gums showed a non-Newtonian Herschel-Bulkley behavior corresponding to an inelastic fluid, independent of time. The apparent viscosity of the gum of algarrobo fluctuated between 0.020 and 0.12; that of tara between 0.06 and 1.3, and that of honey locust between 0.034 and 0.08 Pa*s. The gums of these species have rheological characteristics which would allow their addition to foods.
author	Estévez,Ana María Escobar,Berta Sepúlveda,Marcela
author_facet	Estévez,Ana María Escobar,Berta Sepúlveda,Marcela
author_sort	Estévez,Ana María
title	Physical and rheological characterization of seeds of three legume trees
title_short	Physical and rheological characterization of seeds of three legume trees
title_full	Physical and rheological characterization of seeds of three legume trees
title_fullStr	Physical and rheological characterization of seeds of three legume trees
title_full_unstemmed	Physical and rheological characterization of seeds of three legume trees
title_sort	physical and rheological characterization of seeds of three legume trees
publisher	Universidad de Tarapacá. Facultad de Ciencias Agronómicas
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292012000100010
work_keys_str_mv	AT estevezanamaria physicalandrheologicalcharacterizationofseedsofthreelegumetrees AT escobarberta physicalandrheologicalcharacterizationofseedsofthreelegumetrees AT sepulvedamarcela physicalandrheologicalcharacterizationofseedsofthreelegumetrees
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Physical and rheological characterization of seeds of three legume trees

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