EXTRACTION OF POLYFLAVONOIDS FROM Pinus radiata D. Don BARK: EVALUATION OF EFFECTS OF SOLVENT COMPOSITION AND OF THE HEIGHT ON TREE BARK

This work evaluates the effect of the composition of the solvent mixture on the extraction of polyflavonoids from the bark of Pinus radiata. Non-reactive solvent systems were selected, specifically water 100%, methanol 100 %, and mixtures of them in proportions (7:3), (1:1) and (3:7). The amounts of...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Soto,Roy, Freer,Juanita, Reyes,Nazmy, Baeza,Jaime
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2001
Materias:	polyflavonoids bark Pinus radiata tannins polyphenols
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442001000100008
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0366-16442001000100008
record_format	dspace
spelling	oai:scielo:S0366-164420010001000082001-05-30EXTRACTION OF POLYFLAVONOIDS FROM Pinus radiata D. Don BARK: EVALUATION OF EFFECTS OF SOLVENT COMPOSITION AND OF THE HEIGHT ON TREE BARKSoto,RoyFreer,JuanitaReyes,NazmyBaeza,Jaime polyflavonoids bark Pinus radiata tannins polyphenols This work evaluates the effect of the composition of the solvent mixture on the extraction of polyflavonoids from the bark of Pinus radiata. Non-reactive solvent systems were selected, specifically water 100%, methanol 100 %, and mixtures of them in proportions (7:3), (1:1) and (3:7). The amounts of the extracted with water were lower than those obtained with methanol mixtures. Large variations were not observed when the proportion of methanol in the solvent changes, however the reactive polyphenol percentage increases as the methanol proportion in the extracting solvent is increased. The effect of the section height of the tree from which the bark is obtained, on the nature of the polyflavonoids extracted with such solvents, has been evaluated. The obtained fractions were characterized by chemical assays, chromatographic (GPC) and spectrophotometric (IR) methodsinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaBoletín de la Sociedad Chilena de Química v.46 n.1 20012001-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442001000100008en10.4067/S0366-16442001000100008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	polyflavonoids bark Pinus radiata tannins polyphenols
spellingShingle	polyflavonoids bark Pinus radiata tannins polyphenols Soto,Roy Freer,Juanita Reyes,Nazmy Baeza,Jaime EXTRACTION OF POLYFLAVONOIDS FROM Pinus radiata D. Don BARK: EVALUATION OF EFFECTS OF SOLVENT COMPOSITION AND OF THE HEIGHT ON TREE BARK
description	This work evaluates the effect of the composition of the solvent mixture on the extraction of polyflavonoids from the bark of Pinus radiata. Non-reactive solvent systems were selected, specifically water 100%, methanol 100 %, and mixtures of them in proportions (7:3), (1:1) and (3:7). The amounts of the extracted with water were lower than those obtained with methanol mixtures. Large variations were not observed when the proportion of methanol in the solvent changes, however the reactive polyphenol percentage increases as the methanol proportion in the extracting solvent is increased. The effect of the section height of the tree from which the bark is obtained, on the nature of the polyflavonoids extracted with such solvents, has been evaluated. The obtained fractions were characterized by chemical assays, chromatographic (GPC) and spectrophotometric (IR) methods
author	Soto,Roy Freer,Juanita Reyes,Nazmy Baeza,Jaime
author_facet	Soto,Roy Freer,Juanita Reyes,Nazmy Baeza,Jaime
author_sort	Soto,Roy
title	EXTRACTION OF POLYFLAVONOIDS FROM Pinus radiata D. Don BARK: EVALUATION OF EFFECTS OF SOLVENT COMPOSITION AND OF THE HEIGHT ON TREE BARK
title_short	EXTRACTION OF POLYFLAVONOIDS FROM Pinus radiata D. Don BARK: EVALUATION OF EFFECTS OF SOLVENT COMPOSITION AND OF THE HEIGHT ON TREE BARK
title_full	EXTRACTION OF POLYFLAVONOIDS FROM Pinus radiata D. Don BARK: EVALUATION OF EFFECTS OF SOLVENT COMPOSITION AND OF THE HEIGHT ON TREE BARK
title_fullStr	EXTRACTION OF POLYFLAVONOIDS FROM Pinus radiata D. Don BARK: EVALUATION OF EFFECTS OF SOLVENT COMPOSITION AND OF THE HEIGHT ON TREE BARK
title_full_unstemmed	EXTRACTION OF POLYFLAVONOIDS FROM Pinus radiata D. Don BARK: EVALUATION OF EFFECTS OF SOLVENT COMPOSITION AND OF THE HEIGHT ON TREE BARK
title_sort	extraction of polyflavonoids from pinus radiata d. don bark: evaluation of effects of solvent composition and of the height on tree bark
publisher	Sociedad Chilena de Química
publishDate	2001
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442001000100008
work_keys_str_mv	AT sotoroy extractionofpolyflavonoidsfrompinusradiataddonbarkevaluationofeffectsofsolventcompositionandoftheheightontreebark AT freerjuanita extractionofpolyflavonoidsfrompinusradiataddonbarkevaluationofeffectsofsolventcompositionandoftheheightontreebark AT reyesnazmy extractionofpolyflavonoidsfrompinusradiataddonbarkevaluationofeffectsofsolventcompositionandoftheheightontreebark AT baezajaime extractionofpolyflavonoidsfrompinusradiataddonbarkevaluationofeffectsofsolventcompositionandoftheheightontreebark
_version_	1718438124037603328

EXTRACTION OF POLYFLAVONOIDS FROM Pinus radiata D. Don BARK: EVALUATION OF EFFECTS OF SOLVENT COMPOSITION AND OF THE HEIGHT ON TREE BARK

Ejemplares similares