Portuguese Honeys from Different Geographical and Botanical Origins: A 4-Year Stability Study Regarding Quality Parameters and Antioxidant Activity
| Autor: | Diana Pinto, Francisca Rodrigues, Sónia Soares, M. Beatriz P.P. Oliveira, Rita C. Alves |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Time Factors
Antioxidant colour DPPH Stability study medicine.medical_treatment Color Pharmaceutical Science honey Article Analytical Chemistry storage lcsh:QD241-441 chemistry.chemical_compound 0404 agricultural biotechnology Phenols lcsh:Organic chemistry botanical and geographical origins Drug Discovery Food Quality medicine Humans Furaldehyde Amylase Food science Physical and Theoretical Chemistry Flavonoids antioxidants Portugal biology Chemistry Organic Chemistry 04 agricultural and veterinary sciences Hydrogen-Ion Concentration 040401 food science 6. Clean water Diastase Chemistry (miscellaneous) Amylases biology.protein Molecular Medicine Food quality Oxidation-Reduction Hydroxymethylfurfural |
| Zdroj: | Molecules, Vol 22, Iss 8, p 1338 (2017) Molecules; Volume 22; Issue 8; Pages: 1338 Molecules : A Journal of Synthetic Chemistry and Natural Product Chemistry |
| ISSN: | 1420-3049 |
| Popis: | Portuguese honeys (n = 15) from different botanical and geographical origins were analysed regarding their quality parameters (diastase activity, hydroxymethylfurfural content, moisture and pH), colour (L*, a*, b*) and antioxidant profile (total phenolics content, total flavonoids content, DPPH• scavenging activity, and ferric reducing power). The samples were analysed fresh and after 4-years of storage (at 25 °C and protected from light). The hydroxymethylfurfural content and diastase activity of the fresh samples were in accordance with the recommended values described in the legislation. In general, the antioxidant activity of the samples correlated more with the bioactive compounds content than with colour. The storage affected differently each individual sample, especially regarding the antioxidant profile. Nevertheless, although in general the lightness of the samples decreased (and the redness increased), after 4 years, 11 samples still presented acceptable diastase activity and hydroxymethylfurfural values. |
| Databáze: | OpenAIRE |
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