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Table II

Physico-chemical data for multifloral and some unifloral honeys from Algeria.

Parameter Multifloral Eucalyptus Citrus
n = 48 n = 14 n = 2
Water (% m/m)
Mean ± s.d. 16.5 ± 1.6 16.5 ± 1.7 16.8 ± 0.3
Range 14.0–20.2 14.0–19.8 16.6–17.0
pH
Mean ± s.d. 3.93 ± 0.45 4.00 ± 0.20 4.00 ± 0.10
Range 3.40–6.23 3.70–4.30 3.90–4.10
El. conductivity (mS/cm)
Mean ± s.d. 0.55 ± 0.18 0.60 ± 0.20 0.40 ± 0.20
Range 0.11–0.93 0.10–0.90 0.30–0.50
Diastase number
Mean ± s.d 18.0 ± 9.29 15.9 ± 6.89 8.0 ± 1.41
Range 4.0–40.0 8.0–30.0 7.0–9.0
Invertase number
Mean ± s.d 7.90 ± 4.76 9.64 ± 6.06 2.5 ± 0.71
Range 0–17.00 1.0–20.0 2.0–3.0
HMF (mg kg−1)
Mean ± s.d 17.18 ± 18.42 25.63 ± 27.24 3.11 ± 1.31
Range 0.50–123.98 5.84–110.70 2.18–4.03
PG/10 g (× 1000)
Mean ± s.d. 112.1 ± 226.2 56.9 ± 47.6 11.9 ± 2.8
Range 2.1–1120.4 15.5–148.2 9.9–13.9