Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/38522

TitleA novel approach for honey pollen profile assessment using an electronic tongue and chemometric tools
Author(s)Dias, Luís G.
Veloso, Ana C. A.
Sousa, Mara E. B. C.
Estevinho, Letícia
Machado, Adélio A. S. C.
Peres, António M.
Keywordselectronic tongue
multiple linear regression models
simulated annealing algorithm
honey
pollen profile
Issue date5-Nov-2015
PublisherElsevier B.V.
JournalAnalytica Chimica Acta
CitationDias, Luís G.; Veloso, Ana C. A.; Sousa, Mara E. B. C.; Estevinho, Letícia; Machado, Adélio A. S. C.; Peres, António M., A novel approach for honey pollen profile assessment using an electronic tongue and chemometric tools. Analytica Chimica Acta, 900, 36-45, 2015
Abstract(s)Nowadays the main honey producing countries require accurate labeling of honey before commercialization, including floral classification. Traditionally, this classification is made by melissopalynology analysis, an accurate but time-consuming task requiring laborious sample pre-treatment and high-skilled technicians. In this work the potential use of a potentiometric electronic tongue for pollinic assessment is evaluated, using monofloral and polyfloral honeys. The results showed that after splitting honeys according to color (white, amber and dark), the novel methodology enabled quantifying the relative percentage of the main pollens (Castanea sp., Echium sp., Erica sp., Eucaliptus sp., Lavandula sp., Prunus sp., Rubus sp. and Trifolium sp.). Multiple linear regression models were established for each type of pollen, based on the best sensors sub-sets selected using the simulated annealing algorithm. To minimize the overfitting risk, a repeated K-fold cross-validation procedure was implemented, ensuring that at least 10-20% of the honeys were used for internal validation. With this approach, a minimum average determination coefficient of 0.91 ± 0.15 was obtained. Also, the proposed technique enabled the correct classification of 92% and 100% of monofloral and polyfloral honeys, respectively. The quite satisfactory performance of the novel procedure for quantifying the relative pollen frequency may envisage its applicability for honey labeling and geographical origin identification. Nevertheless, this approach is not a full alternative to the traditional melissopalynologic analysis; it may be seen as a practical complementary tool for preliminary honey floral classification, leaving only problematic cases for pollinic evaluation.
TypeArticle
URIhttp://hdl.handle.net/1822/38522
DOI10.1016/j.aca.2015.10.014
ISSN0003-2670
e-ISSN1873-4324
Publisher versionhttp://www.elsevier.com/locate/issn/00032670
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

Files in This Item:
File Description SizeFormat 
document_24449_1.pdf1,35 MBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID