Journal
MICROCHEMICAL JOURNAL
Volume 93, Issue 1, Pages 73-77Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.microc.2009.05.005
Keywords
Luso honey; Pollen analysis; Physicochemical analysis; Mineral content
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This work was conducted to evaluate the quality of 38 honey samples from Luso region (Portugal), and to study the relation between Eucalyptus pollen and chemical properties of honey. Mean values obtained for physicochemical parameters were: pH 3.83; 16.65% moisture: 80.7 degrees Brix sugar; 0.35% ash: 419.6 mu S cm(-1) electrical conductivity: 21.5 meq/kg free acidity; 9.6 meq/kg lactonic acidity; 31.2 meq/kg total acidity; 9.41 mg/kg HMF and 18.3 degrees Gothe diastase activity. The mineral content was determined by atomic absorption spectrometry, and in the analysed samples, potassium was the major element, being magnesium the minor one. Mean values obtained were (mg/kg): Ca, 59.88; K, 1150.10; Mg, 35.57; Na, 261.43. Among the overall determined parameters, only Mg. ash and electrical conductivity were influenced by the presence of Eucalyptus pollen in the honey samples: the values obtained for Mg, ash and electrical conductivity in multifloral honey without Eucalyptus were lower than those of either monofloral or multifloral honey with Eucalyptus. The results obtained for physicochemical characteristics of Luso, honey indicate a good quality level, adequate processing, good maturity and freshness. Published by Elsevier B.V.
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