Volatile profile of Portuguese monofloral honeys: significance in botanical origin determination
Main Author: | |
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Publication Date: | 2021 |
Other Authors: | , , , |
Format: | Article |
Language: | eng |
Source: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Download full: | http://hdl.handle.net/10400.1/16913 |
Summary: | The volatile profiles of 51 samples from 12 monofloral-labelled Portuguese honey types were assessed. Honeys of bell heather, carob tree, chestnut, eucalyptus, incense, lavender, orange, rape, raspberry, rosemary, sunflower and strawberry tree were collected from several regions from mainland Portugal and from the Azores Islands. When available, the corresponding flower volatiles were comparatively evaluated. Honey volatiles were isolated using two different extraction methods, solid-phase microextraction (SPME) and hydrodistillation (HD), with HD proving to be more effective in the number of volatiles extracted. Agglomerative cluster analysis of honey HD volatiles evidenced two main clusters, one of which had nine sub-clusters. Components grouped by biosynthetic pathway defined alkanes and fatty acids as dominant, namely <i>n</i>-nonadecane, <i>n</i>-heneicosane, <i>n</i>-tricosane and <i>n</i>-pentacosane and palmitic, linoleic and oleic acids. Oxygen-containing monoterpenes, such as <i>cis</i>- and <i>trans</i>-linalool oxide (furanoid), hotrienol and the apocarotenoid α-isophorone, were also present in lower amounts. Aromatic amino acid derivatives were also identified, namely benzene acetaldehyde and 3,4,5-trimethylphenol. Fully grown classification tree analysis allowed the identification of the most relevant volatiles for discriminating the different honey types. Twelve volatile compounds were enough to fully discriminate eleven honey types (92%) according to the botanical origin. |
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Volatile profile of Portuguese monofloral honeys: significance in botanical origin determinationPortuguese honeysVolatile profileHoney type discriminationBotanical origin determinationThe volatile profiles of 51 samples from 12 monofloral-labelled Portuguese honey types were assessed. Honeys of bell heather, carob tree, chestnut, eucalyptus, incense, lavender, orange, rape, raspberry, rosemary, sunflower and strawberry tree were collected from several regions from mainland Portugal and from the Azores Islands. When available, the corresponding flower volatiles were comparatively evaluated. Honey volatiles were isolated using two different extraction methods, solid-phase microextraction (SPME) and hydrodistillation (HD), with HD proving to be more effective in the number of volatiles extracted. Agglomerative cluster analysis of honey HD volatiles evidenced two main clusters, one of which had nine sub-clusters. Components grouped by biosynthetic pathway defined alkanes and fatty acids as dominant, namely <i>n</i>-nonadecane, <i>n</i>-heneicosane, <i>n</i>-tricosane and <i>n</i>-pentacosane and palmitic, linoleic and oleic acids. Oxygen-containing monoterpenes, such as <i>cis</i>- and <i>trans</i>-linalool oxide (furanoid), hotrienol and the apocarotenoid α-isophorone, were also present in lower amounts. Aromatic amino acid derivatives were also identified, namely benzene acetaldehyde and 3,4,5-trimethylphenol. Fully grown classification tree analysis allowed the identification of the most relevant volatiles for discriminating the different honey types. Twelve volatile compounds were enough to fully discriminate eleven honey types (92%) according to the botanical origin.PT2020 PACompete 2020MDPISapientiaMachado, Alexandra M.Antunes, MaríliaMiguel, Maria GraçaVilas-Boas, MiguelFigueiredo, Ana Cristina2021-08-31T13:33:06Z2021-08-172021-08-26T13:27:52Z2021-08-17T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/16913engMolecules 26 (16): 4970 (2021)1420-304910.3390/molecules26164970info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-02T02:01:54Zoai:sapientia.ualg.pt:10400.1/16913Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:06:56.760980Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Volatile profile of Portuguese monofloral honeys: significance in botanical origin determination |
title |
Volatile profile of Portuguese monofloral honeys: significance in botanical origin determination |
spellingShingle |
Volatile profile of Portuguese monofloral honeys: significance in botanical origin determination Machado, Alexandra M. Portuguese honeys Volatile profile Honey type discrimination Botanical origin determination |
title_short |
Volatile profile of Portuguese monofloral honeys: significance in botanical origin determination |
title_full |
Volatile profile of Portuguese monofloral honeys: significance in botanical origin determination |
title_fullStr |
Volatile profile of Portuguese monofloral honeys: significance in botanical origin determination |
title_full_unstemmed |
Volatile profile of Portuguese monofloral honeys: significance in botanical origin determination |
title_sort |
Volatile profile of Portuguese monofloral honeys: significance in botanical origin determination |
author |
Machado, Alexandra M. |
author_facet |
Machado, Alexandra M. Antunes, Marília Miguel, Maria Graça Vilas-Boas, Miguel Figueiredo, Ana Cristina |
author_role |
author |
author2 |
Antunes, Marília Miguel, Maria Graça Vilas-Boas, Miguel Figueiredo, Ana Cristina |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Machado, Alexandra M. Antunes, Marília Miguel, Maria Graça Vilas-Boas, Miguel Figueiredo, Ana Cristina |
dc.subject.por.fl_str_mv |
Portuguese honeys Volatile profile Honey type discrimination Botanical origin determination |
topic |
Portuguese honeys Volatile profile Honey type discrimination Botanical origin determination |
description |
The volatile profiles of 51 samples from 12 monofloral-labelled Portuguese honey types were assessed. Honeys of bell heather, carob tree, chestnut, eucalyptus, incense, lavender, orange, rape, raspberry, rosemary, sunflower and strawberry tree were collected from several regions from mainland Portugal and from the Azores Islands. When available, the corresponding flower volatiles were comparatively evaluated. Honey volatiles were isolated using two different extraction methods, solid-phase microextraction (SPME) and hydrodistillation (HD), with HD proving to be more effective in the number of volatiles extracted. Agglomerative cluster analysis of honey HD volatiles evidenced two main clusters, one of which had nine sub-clusters. Components grouped by biosynthetic pathway defined alkanes and fatty acids as dominant, namely <i>n</i>-nonadecane, <i>n</i>-heneicosane, <i>n</i>-tricosane and <i>n</i>-pentacosane and palmitic, linoleic and oleic acids. Oxygen-containing monoterpenes, such as <i>cis</i>- and <i>trans</i>-linalool oxide (furanoid), hotrienol and the apocarotenoid α-isophorone, were also present in lower amounts. Aromatic amino acid derivatives were also identified, namely benzene acetaldehyde and 3,4,5-trimethylphenol. Fully grown classification tree analysis allowed the identification of the most relevant volatiles for discriminating the different honey types. Twelve volatile compounds were enough to fully discriminate eleven honey types (92%) according to the botanical origin. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-08-31T13:33:06Z 2021-08-17 2021-08-26T13:27:52Z 2021-08-17T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.1/16913 |
url |
http://hdl.handle.net/10400.1/16913 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Molecules 26 (16): 4970 (2021) 1420-3049 10.3390/molecules26164970 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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MDPI |
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MDPI |
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reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133313116405760 |