Biological Activity of Essential Oils of Four Juniper Species and Their Potential as Biopesticides

The objective of this study was to assess the biological activity of essential oils (EOs) of four <i>Juniperus</i> species obtained via two different distillation methods and their potential as biopesticides. The studied factors were juniper species (<i>Juniperus communis</i>...

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Autores principales:	Ivanka Semerdjieva, Valtcho D. Zheljazkov, Tzenka Radoukova, Ivayla Dincheva, Neshka Piperkova, Vasilina Maneva, Tess Astatkie, Miroslava Kačániová
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	<i>Juniperus</i> repellent activity insecticidal activity antifungal activity antioxidant antimicrobial activity Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/884cbab210874f339ebbaaaecc275f1a
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spelling	oai:doaj.org-article:884cbab210874f339ebbaaaecc275f1a2021-11-11T18:23:18ZBiological Activity of Essential Oils of Four Juniper Species and Their Potential as Biopesticides10.3390/molecules262163581420-3049https://doaj.org/article/884cbab210874f339ebbaaaecc275f1a2021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6358https://doaj.org/toc/1420-3049The objective of this study was to assess the biological activity of essential oils (EOs) of four <i>Juniperus</i> species obtained via two different distillation methods and their potential as biopesticides. The studied factors were juniper species (<i>Juniperus communis</i> L., <i>J. oxycedrus</i> L., <i>J. pygmaea</i> C. Koch., and <i>J. sibirica</i> Burgsd), plant sex (male (M) and female (F)), and distillation method (hydrodistillation via a standard Clevenger apparatus (ClevA) and semi-commercial (SCom) steam distillation). The hypothesis was that the EO will have differential antioxidant, antimicrobial, and insecticidal activities as a function of plant species, plant sex, and distillation method. The two distillation methods resulted in similar EO composition within a given species. However, there were differences in the EO content (yield) due to the sex of the plant, and also differences in the proportions of some EO components. The concentration of α-pinene, β-caryophyllene, δ-cadinene and δ-cadinol was dissimilar between the EO of M and F plants within all four species. Additionally, M and F plants of <i>J. pygmaea</i>, and <i>J. sibirica</i> had significantly different concentrations of sabinene within the respective species. The EOs obtained via ClevA extraction showed higher antioxidant capacity within a species compared with those from SCom extraction. All of the tested EOs had significant repellent and insecticidal activity against the two aphid species <i>Rhopalosiphum padi</i> (bird cherry-oat aphid) and <i>Sitobion avenae</i> (English grain aphid) at concentrations of the EO in the solution of 1%, 2.5%, and 5%. The tested EOs demonstrated moderate activity against selected pathogens <i>Fusarium</i> spp., <i>Botrytis cinerea</i>, <i>Colletotrichum</i> spp., <i>Rhizoctonia solani</i> and <i>Cylindrocarpon pauciseptatum</i>. The results demonstrate that the standard ClevA would provide comparable EO content and composition in comparison with SCom steam distillation; however, even slight differences in the EO composition may translate into differential bioactivity.Ivanka SemerdjievaValtcho D. ZheljazkovTzenka RadoukovaIvayla DinchevaNeshka PiperkovaVasilina ManevaTess AstatkieMiroslava KačániováMDPI AGarticle<i>Juniperus</i>repellent activityinsecticidal activityantifungal activityantioxidantantimicrobial activityOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6358, p 6358 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	<i>Juniperus</i> repellent activity insecticidal activity antifungal activity antioxidant antimicrobial activity Organic chemistry QD241-441
spellingShingle	<i>Juniperus</i> repellent activity insecticidal activity antifungal activity antioxidant antimicrobial activity Organic chemistry QD241-441 Ivanka Semerdjieva Valtcho D. Zheljazkov Tzenka Radoukova Ivayla Dincheva Neshka Piperkova Vasilina Maneva Tess Astatkie Miroslava Kačániová Biological Activity of Essential Oils of Four Juniper Species and Their Potential as Biopesticides
description	The objective of this study was to assess the biological activity of essential oils (EOs) of four <i>Juniperus</i> species obtained via two different distillation methods and their potential as biopesticides. The studied factors were juniper species (<i>Juniperus communis</i> L., <i>J. oxycedrus</i> L., <i>J. pygmaea</i> C. Koch., and <i>J. sibirica</i> Burgsd), plant sex (male (M) and female (F)), and distillation method (hydrodistillation via a standard Clevenger apparatus (ClevA) and semi-commercial (SCom) steam distillation). The hypothesis was that the EO will have differential antioxidant, antimicrobial, and insecticidal activities as a function of plant species, plant sex, and distillation method. The two distillation methods resulted in similar EO composition within a given species. However, there were differences in the EO content (yield) due to the sex of the plant, and also differences in the proportions of some EO components. The concentration of α-pinene, β-caryophyllene, δ-cadinene and δ-cadinol was dissimilar between the EO of M and F plants within all four species. Additionally, M and F plants of <i>J. pygmaea</i>, and <i>J. sibirica</i> had significantly different concentrations of sabinene within the respective species. The EOs obtained via ClevA extraction showed higher antioxidant capacity within a species compared with those from SCom extraction. All of the tested EOs had significant repellent and insecticidal activity against the two aphid species <i>Rhopalosiphum padi</i> (bird cherry-oat aphid) and <i>Sitobion avenae</i> (English grain aphid) at concentrations of the EO in the solution of 1%, 2.5%, and 5%. The tested EOs demonstrated moderate activity against selected pathogens <i>Fusarium</i> spp., <i>Botrytis cinerea</i>, <i>Colletotrichum</i> spp., <i>Rhizoctonia solani</i> and <i>Cylindrocarpon pauciseptatum</i>. The results demonstrate that the standard ClevA would provide comparable EO content and composition in comparison with SCom steam distillation; however, even slight differences in the EO composition may translate into differential bioactivity.
format	article
author	Ivanka Semerdjieva Valtcho D. Zheljazkov Tzenka Radoukova Ivayla Dincheva Neshka Piperkova Vasilina Maneva Tess Astatkie Miroslava Kačániová
author_facet	Ivanka Semerdjieva Valtcho D. Zheljazkov Tzenka Radoukova Ivayla Dincheva Neshka Piperkova Vasilina Maneva Tess Astatkie Miroslava Kačániová
author_sort	Ivanka Semerdjieva
title	Biological Activity of Essential Oils of Four Juniper Species and Their Potential as Biopesticides
title_short	Biological Activity of Essential Oils of Four Juniper Species and Their Potential as Biopesticides
title_full	Biological Activity of Essential Oils of Four Juniper Species and Their Potential as Biopesticides
title_fullStr	Biological Activity of Essential Oils of Four Juniper Species and Their Potential as Biopesticides
title_full_unstemmed	Biological Activity of Essential Oils of Four Juniper Species and Their Potential as Biopesticides
title_sort	biological activity of essential oils of four juniper species and their potential as biopesticides
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/884cbab210874f339ebbaaaecc275f1a
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Biological Activity of Essential Oils of Four Juniper Species and Their Potential as Biopesticides

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