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Molecules

Title:		Volatile Profile of Portuguese Monofloral Honeys: Significance in Botanical Origin Determination
Author(s):		Machado AM; Antunes M; Miguel MG; Vilas-Boas M; Figueiredo AC;
Address:		"Centro de Estudos do Ambiente e do Mar (CESAM Lisboa), Centro de Biotecnologia Vegetal (CBV), Faculdade de Ciencias da Universidade de Lisboa, DBV, C2, Piso 1, Campo Grande, 1749-016 Lisboa, Portugal. Centro de Estatistica e Aplicacoes (CEAUL), Departamento de Estatistica e Investigacao Operacional, Faculdade de Ciencias da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal. Faculdade de Ciencias e Tecnologia, Mediterranean Institute for Agriculture, Environment and Development, Campus de Gambelas, Universidade do Algarve, 8005-139 Faro, Portugal. CIMO, Centro de Investigacao de Montanha, Instituto Politecnico de Braganca, Campus de Santa Apolonia, 5300-253 Braganca, Portugal"
Journal Title:		Molecules
Year:		2021
Volume:		20210817
Issue:		16
Page Number:		-
DOI:		10.3390/molecules26164970
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"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 n-nonadecane, n-heneicosane, n-tricosane and n-pentacosane and palmitic, linoleic and oleic acids. Oxygen-containing monoterpenes, such as cis- and trans-linalool oxide (furanoid), hotrienol and the apocarotenoid alpha-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"
Keywords:		Food Analysis Food Quality Honey/*analysis Volatile Organic Compounds/*analysis Portuguese honeys botanical origin determination honey type discrimination volatile profile;
Notes:		"MedlineMachado, Alexandra M Antunes, Marilia Miguel, Maria Graca Vilas-Boas, Miguel Figueiredo, Ana Cristina eng SFRH/BD/117013/2016/Fundacao para a Ciencia e a Tecnologia/ CESAM UIDB/50017/2020 + UIDP/50017/2020/Fundacao para a Ciencia e a Tecnologia/ CIMO UIDB/00690/2020/Fundacao para a Ciencia e a Tecnologia/ CEAUL UIDB/00006/2020/Fundacao para a Ciencia e a Tecnologia/ MED UIDB/05183/2020/Fundacao para a Ciencia e a Tecnologia/ Switzerland 2021/08/28 Molecules. 2021 Aug 17; 26(16):4970. doi: 10.3390/molecules26164970"