Comparison of phenolic extracts obtained of Pinus radiata bark from pulp and paper industry and sawmill industry

Pinus radiata barks obtained from tress of different ages, as subproduct of pulp and paper (trees less than 10 years) and sawmill (trees between 20 to 25 years) industries, were used to produce extracts containing phenolic compounds. A factorial design 2³ was used to evaluate the influence of the va...

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Autores principales:	Aspé,Estrella, Fernández,Katherina
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2011
Materias:	Antioxidants bark Pinus radiata tannins
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000300001
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spelling	oai:scielo:S0718-221X20110003000012012-10-09Comparison of phenolic extracts obtained of Pinus radiata bark from pulp and paper industry and sawmill industryAspé,EstrellaFernández,Katherina Antioxidants bark Pinus radiata tannins Pinus radiata barks obtained from tress of different ages, as subproduct of pulp and paper (trees less than 10 years) and sawmill (trees between 20 to 25 years) industries, were used to produce extracts containing phenolic compounds. A factorial design 2³ was used to evaluate the influence of the variables temperature (25 - 35 ºC), solvent type (acetone - ethanol) and extraction time (1-12 h). The extracts were compared in their extraction yield (%), total phenols (by FolinCiocalteau), and radical scavenging activity (by DPPH). The extract obtained from old trunks presented a higher extraction yield than from young trees. The highest yield value was 2.56%, which was obtained using acetone as solvent for 12 h and 35°C. The highest concentration of phenol (5.84± 0.18 g CE g extract-1), and scavenging activity (IP=86.1± 4.4%) were also obtained for this type of extract. The extraction duration was the variable that most influenced the parameters studied. The barks radical scavenging power was greater than BHT (40%) and slightly lower than ascorbic acid (92%), common commercial antioxidants.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.13 n.3 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000300001en10.4067/S0718-221X2011000300001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Antioxidants bark Pinus radiata tannins
spellingShingle	Antioxidants bark Pinus radiata tannins Aspé,Estrella Fernández,Katherina Comparison of phenolic extracts obtained of Pinus radiata bark from pulp and paper industry and sawmill industry
description	Pinus radiata barks obtained from tress of different ages, as subproduct of pulp and paper (trees less than 10 years) and sawmill (trees between 20 to 25 years) industries, were used to produce extracts containing phenolic compounds. A factorial design 2³ was used to evaluate the influence of the variables temperature (25 - 35 ºC), solvent type (acetone - ethanol) and extraction time (1-12 h). The extracts were compared in their extraction yield (%), total phenols (by FolinCiocalteau), and radical scavenging activity (by DPPH). The extract obtained from old trunks presented a higher extraction yield than from young trees. The highest yield value was 2.56%, which was obtained using acetone as solvent for 12 h and 35°C. The highest concentration of phenol (5.84± 0.18 g CE g extract-1), and scavenging activity (IP=86.1± 4.4%) were also obtained for this type of extract. The extraction duration was the variable that most influenced the parameters studied. The barks radical scavenging power was greater than BHT (40%) and slightly lower than ascorbic acid (92%), common commercial antioxidants.
author	Aspé,Estrella Fernández,Katherina
author_facet	Aspé,Estrella Fernández,Katherina
author_sort	Aspé,Estrella
title	Comparison of phenolic extracts obtained of Pinus radiata bark from pulp and paper industry and sawmill industry
title_short	Comparison of phenolic extracts obtained of Pinus radiata bark from pulp and paper industry and sawmill industry
title_full	Comparison of phenolic extracts obtained of Pinus radiata bark from pulp and paper industry and sawmill industry
title_fullStr	Comparison of phenolic extracts obtained of Pinus radiata bark from pulp and paper industry and sawmill industry
title_full_unstemmed	Comparison of phenolic extracts obtained of Pinus radiata bark from pulp and paper industry and sawmill industry
title_sort	comparison of phenolic extracts obtained of pinus radiata bark from pulp and paper industry and sawmill industry
publisher	Universidad del Bío-Bío
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000300001
work_keys_str_mv	AT aspeestrella comparisonofphenolicextractsobtainedofpinusradiatabarkfrompulpandpaperindustryandsawmillindustry AT fernandezkatherina comparisonofphenolicextractsobtainedofpinusradiatabarkfrompulpandpaperindustryandsawmillindustry
_version_	1714202554079903744

Comparison of phenolic extracts obtained of Pinus radiata bark from pulp and paper industry and sawmill industry

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