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Organic honey from Trás-Os-Montes region (Portugal): chemical, palynological, microbiological and bioactive compounds characterization.
Food Chem Toxicol. 2012 Feb; 50(2):258-64.FC

Abstract

At the present time, the quality, integrity, sanitation and nutritional value of honeys receive attention on an international level due to the increasing content of chemicals in the aforementioned matrix. This work was conducted to evaluate the quality of 75 organic honey samples from the Trás-Os-Montes region (Portugal). Mean values obtained for physico-chemical parameters were: pH 3.7; 15.6% moisture; 0.26mS/cm electrical conductivity; 0.25% ash; 1.1mg/kg HMF; 15.3 Gothe diastase activity; 40.3meq/kg free acidity; 67.8% invert sugars and 2.7% apparent sucrose. All honey samples can be classified as monofloral Erica sp., as showed by pollen features. The amounts of phenols and flavonoids in the samples were also determined. In respect to sanitary quality (fecal coliforms) and safety (sulfite-reducing clostridia and Salmonella), all organic honey samples were negative. Furthermore, yeast and molds were detected in low counts, with mean values obtained of 5.5cfu/g and the value of total aerobic mesophiles obtained from honeys was established in 1.3×10(2)cfu/g±7.5×10(1)cfu/g. The levels of flavonoids had a stronger impact on both mesophiles (p=0.0004) and molds (p=0.0138) than the sucrose concentration (p=0.001 and 0.0278; respectively). The results reported in this study should be introduced in the organic honey label, and may help beekeepers, the industry, researchers and consumers better understand honey properties.

Authors+Show Affiliations

CIMO-Mountain Research Center, Agricultural College of Bragança, Polytechnic Institute of Bragança, Campus Santa Apolónia, E 5301-855 Bragança, Portugal. Leticia@ipb.ptNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22019893

Citation

Estevinho, Leticia M., et al. "Organic Honey From Trás-Os-Montes Region (Portugal): Chemical, Palynological, Microbiological and Bioactive Compounds Characterization." Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association, vol. 50, no. 2, 2012, pp. 258-64.
Estevinho LM, Feás X, Seijas JA, et al. Organic honey from Trás-Os-Montes region (Portugal): chemical, palynological, microbiological and bioactive compounds characterization. Food Chem Toxicol. 2012;50(2):258-64.
Estevinho, L. M., Feás, X., Seijas, J. A., & Pilar Vázquez-Tato, M. (2012). Organic honey from Trás-Os-Montes region (Portugal): chemical, palynological, microbiological and bioactive compounds characterization. Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association, 50(2), 258-64. https://doi.org/10.1016/j.fct.2011.10.034
Estevinho LM, et al. Organic Honey From Trás-Os-Montes Region (Portugal): Chemical, Palynological, Microbiological and Bioactive Compounds Characterization. Food Chem Toxicol. 2012;50(2):258-64. PubMed PMID: 22019893.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Organic honey from Trás-Os-Montes region (Portugal): chemical, palynological, microbiological and bioactive compounds characterization. AU - Estevinho,Leticia M, AU - Feás,Xesús, AU - Seijas,Julio A, AU - Pilar Vázquez-Tato,M, Y1 - 2011/10/13/ PY - 2011/08/09/received PY - 2011/09/12/revised PY - 2011/10/05/accepted PY - 2011/10/25/entrez PY - 2011/10/25/pubmed PY - 2012/6/13/medline SP - 258 EP - 64 JF - Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association JO - Food Chem. Toxicol. VL - 50 IS - 2 N2 - At the present time, the quality, integrity, sanitation and nutritional value of honeys receive attention on an international level due to the increasing content of chemicals in the aforementioned matrix. This work was conducted to evaluate the quality of 75 organic honey samples from the Trás-Os-Montes region (Portugal). Mean values obtained for physico-chemical parameters were: pH 3.7; 15.6% moisture; 0.26mS/cm electrical conductivity; 0.25% ash; 1.1mg/kg HMF; 15.3 Gothe diastase activity; 40.3meq/kg free acidity; 67.8% invert sugars and 2.7% apparent sucrose. All honey samples can be classified as monofloral Erica sp., as showed by pollen features. The amounts of phenols and flavonoids in the samples were also determined. In respect to sanitary quality (fecal coliforms) and safety (sulfite-reducing clostridia and Salmonella), all organic honey samples were negative. Furthermore, yeast and molds were detected in low counts, with mean values obtained of 5.5cfu/g and the value of total aerobic mesophiles obtained from honeys was established in 1.3×10(2)cfu/g±7.5×10(1)cfu/g. The levels of flavonoids had a stronger impact on both mesophiles (p=0.0004) and molds (p=0.0138) than the sucrose concentration (p=0.001 and 0.0278; respectively). The results reported in this study should be introduced in the organic honey label, and may help beekeepers, the industry, researchers and consumers better understand honey properties. SN - 1873-6351 UR - https://www.unboundmedicine.com/medline/citation/22019893/Organic_honey_from_Trás_Os_Montes_region__Portugal_:_chemical_palynological_microbiological_and_bioactive_compounds_characterization_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0278-6915(11)00540-0 DB - PRIME DP - Unbound Medicine ER -