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- Title
Palynological, physico-chemical and colour characterization of Moroccan honeys: I. River red gum (Eucalyptus camaldulensis Dehnh) honey.
- Authors
Terrab, Anass; Díez, Maria Josefa; Heredia, Francisco José
- Abstract
Summary The melissopalynological, physico-chemical and colour characteristics of Eucalyptus honeys from Morocco were studied. It is generally accepted that a minimum content of 70% of Eucalyptus pollen is necessary to classify an Eucalyptus honey as unifloral. Twenty-eight physico-chemical and five colour parameters were measured, including the content of sugars and minerals, proline, water content, pH, acidity, hydroxymethylfurfural, diastase activity, ash, electrical conductivity, colour coordinates (L *, a *, b *), chroma (C * ab ) and hue angle (h ab ). Pollen analysis was included, and samples contained a mean of six pollen types (range 2–12). The majority of the samples (75%) contained more than 90%Eucalyptus pollen. The presence of Quercus , Plantago and Thymelaea pollen allows the differentiation of these honeys from those with a different geographical origin. Physico-chemical analysis showed that there was a low percentage of sucrose (&formmu0; = 0.01%) and trisaccharides. Mineral analysis showed a low percentage of Mg (&formmu1; = 25.99 ppm) and K (&formmu2; = 205 ppm), while electrical conductivity (&formmu3; = 721 μS cm-1 ) and diastase activity (&formmu4; = 39.05 °Gothe) showed medium-high values. The colour parameters lightness (L *) and chroma (C * ab ) showed relatively low values.
- Subjects
MOROCCO; EUCALYPTUS; HONEY; PALYNOLOGY
- Publication
International Journal of Food Science & Technology, 2003, Vol 38, Issue 4, p379
- ISSN
0950-5423
- Publication type
Article
- DOI
10.1046/j.1365-2621.2003.00715.x