Concerns about traces of numerous toxic substances and authenticity have
prompted consumer demand for honey that is certified as organic, based on strict
ecological, natural principles and traceability. The present study aims to characterize
organic honey samples (n = 73) from Northeast Portugal, with respect to floral nectar
origin, physicochemical parameters and microbial safety. The phenols and flavonoids
contents, often referred to as responsible for honey’s bioactive properties, were also
assessed. All organic honey samples were classified as monofloral lavender
(Lavandula sp.), exceeded in quality the international physicochemical standards and
showed low microbiological counts (yeast, moulds and aerobic mesophiles), with negative
results in respect to fecal coliforms, Salmonella and sulphite-reducing Clostridium spp.
Correlation of the palynological, physicochemical and microbiological results is necessary
to check the authenticity, quality and sanitation of honey. Although not required by
international legislation, results of those assessments provide a complete outlook and
elucidation of the organic honey’s properties, which could promote its valorisation.
