Chemical Profiling of Polyfloral Belgian Honey: Ellagic Acid and Pinocembrin as Antioxidants and Chemical Markers

Table 3

The standard chemical parameters of honey (Polish Quality Standard (PN-88/A – 77626).

	General standards	Mortsel			Lichtaart			Kasterlee
		2007	2008	2009	2007	2008	2009	2007	2008	2009
Av.,
Moisture content	≤20%, except heather-, baker honey: ≤23%; Note ≥20%: short shelf lives, risk of fermentation	16.1%	18.9%	17.3%	17.4%	16.3%	16.4%	16.9%	16.2%	18.1%
Electrical conductivity	Flower honey and blended honey: ≤800 µS/cm; Leave honey, chestnut honey, and blends: >800 µS/cm	252 µS/cm	461 µS/cm	221 µS/cm	178 µS/cm	166 µS/cm	696 µS/cm	169 µS/cm	206 µS/cm	446 µS/cm
Specific rotation		−11.3	−9.5	−10.8	−12.5	−14.0	−2.0	−11.8	−12.3	−7.5
Invertase	General: ≥50 U/kg (Siegenthaler scale units), honey with low enzyme activity ≥20 U/kg	122 U/kg	152 U/kg	92 U/kg	54 U/kg	117 U/kg	188 U/kg	51 U/kg	78 U/kg	173 U/kg