Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six Eucalyptus Species

The leaves of Eucalyptus have multiple biological activities such as antimicrobial, antiseptic, antioxidant, and antifungal. A Soxhlet extraction, SLE, and HD were used to obtain extracts from the leaves of six Eucalyptus species, E. globulus,...

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Autores principales:	Xana Álvarez, Ángeles Cancela, Yolanda Merchán, Ángel Sánchez
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	<i>Eucalyptus</i> Soxhlet extraction solvents gallic acid anthocyanins Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/47a7f728b4e143779fd9df144124877c
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spelling	oai:doaj.org-article:47a7f728b4e143779fd9df144124877c2021-11-11T14:57:59ZAnthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six <i>Eucalyptus</i> Species10.3390/app112198182076-3417https://doaj.org/article/47a7f728b4e143779fd9df144124877c2021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/9818https://doaj.org/toc/2076-3417The leaves of <i>Eucalyptus</i> have multiple biological activities such as antimicrobial, antiseptic, antioxidant, and antifungal. A Soxhlet extraction, SLE, and HD were used to obtain extracts from the leaves of six <i>Eucalyptus</i> species, <i>E. globulus</i>, <i>E. oblicua</i>, <i>E. pavaflora</i>, <i>E. camaldulensis</i>, <i>E. viminalis</i>, and <i>E. nitens</i>, and to study their antioxidant capacity. Solvents such as acetone, dichloromethane, ethanol, hexane, methanol, and water were used to study how polarity influences extraction yields. The SLE method achieved higher or similar yields, depending on the species and its composition, than the Soxlet method at a temperature of 50 °C. The highest yields were obtained with <i>E. viminalis</i> with methanol (42.5 wt.%), the highest phenolic content was obtained with <i>E. nitens</i> with methanol (124.17 mg GAE/g of extract), and the highest anthocyanin levels obtained were with <i>E. nitens</i> with hexane (5.05 mg CC/g of extract). <i>E. nitens</i> obtained almost five times more phenolic content than <i>E. globulus</i>; therefore, it is the most promising species. The high content of the compounds analysed confirm the good potential of these species to obtain value-added compounds. Our results demonstrate that the differences in the extract contents depend on the polarity of the solvents used. In addition, the use of these species will reduce the residue in the forest, which is greatly beneficial.Xana ÁlvarezÁngeles CancelaYolanda MerchánÁngel SánchezMDPI AGarticle<i>Eucalyptus</i>Soxhlet extractionsolventsgallic acidanthocyaninsTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 9818, p 9818 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	<i>Eucalyptus</i> Soxhlet extraction solvents gallic acid anthocyanins Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	<i>Eucalyptus</i> Soxhlet extraction solvents gallic acid anthocyanins Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Xana Álvarez Ángeles Cancela Yolanda Merchán Ángel Sánchez Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six <i>Eucalyptus</i> Species
description	The leaves of <i>Eucalyptus</i> have multiple biological activities such as antimicrobial, antiseptic, antioxidant, and antifungal. A Soxhlet extraction, SLE, and HD were used to obtain extracts from the leaves of six <i>Eucalyptus</i> species, <i>E. globulus</i>, <i>E. oblicua</i>, <i>E. pavaflora</i>, <i>E. camaldulensis</i>, <i>E. viminalis</i>, and <i>E. nitens</i>, and to study their antioxidant capacity. Solvents such as acetone, dichloromethane, ethanol, hexane, methanol, and water were used to study how polarity influences extraction yields. The SLE method achieved higher or similar yields, depending on the species and its composition, than the Soxlet method at a temperature of 50 °C. The highest yields were obtained with <i>E. viminalis</i> with methanol (42.5 wt.%), the highest phenolic content was obtained with <i>E. nitens</i> with methanol (124.17 mg GAE/g of extract), and the highest anthocyanin levels obtained were with <i>E. nitens</i> with hexane (5.05 mg CC/g of extract). <i>E. nitens</i> obtained almost five times more phenolic content than <i>E. globulus</i>; therefore, it is the most promising species. The high content of the compounds analysed confirm the good potential of these species to obtain value-added compounds. Our results demonstrate that the differences in the extract contents depend on the polarity of the solvents used. In addition, the use of these species will reduce the residue in the forest, which is greatly beneficial.
format	article
author	Xana Álvarez Ángeles Cancela Yolanda Merchán Ángel Sánchez
author_facet	Xana Álvarez Ángeles Cancela Yolanda Merchán Ángel Sánchez
author_sort	Xana Álvarez
title	Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six <i>Eucalyptus</i> Species
title_short	Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six <i>Eucalyptus</i> Species
title_full	Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six <i>Eucalyptus</i> Species
title_fullStr	Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six <i>Eucalyptus</i> Species
title_full_unstemmed	Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six <i>Eucalyptus</i> Species
title_sort	anthocyanins, phenolic compounds, and antioxidants from extractions of six <i>eucalyptus</i> species
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/47a7f728b4e143779fd9df144124877c
work_keys_str_mv	AT xanaalvarez anthocyaninsphenoliccompoundsandantioxidantsfromextractionsofsixieucalyptusispecies AT angelescancela anthocyaninsphenoliccompoundsandantioxidantsfromextractionsofsixieucalyptusispecies AT yolandamerchan anthocyaninsphenoliccompoundsandantioxidantsfromextractionsofsixieucalyptusispecies AT angelsanchez anthocyaninsphenoliccompoundsandantioxidantsfromextractionsofsixieucalyptusispecies
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Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six <i>Eucalyptus</i> Species

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