engleski

Electrical conductivity and ash content of selected honey types

Mineral content of honey can be evaluated through ash content and/or electrical conductivity measurement. It primarily depends on botanical origin but also on soil type where nectar-bearing plant was located. Electrical conductivity, ash content and free acidity of 6 selected honey types, black locust (Robinia pseudoacacia L.), chestnut (Castanea sativa Mill.), sage (Salvia officinalis L.), Christ´s thorn (Paliurus spina Christi Mill.), bastard indigo (Amorpha fruticosa L.) and honeydew honey were determined, as well as the relationship between those physicochemical parameters. Black locust and bastard indigo honeys, lightest among determined honey types, had lowest ash content and electrical conductivity, while darker chestnut and honeydew honeys had highest values for ash content and electrical conductivity. Good relationship between electrical conductivity and free acidity was obtained (r=0.504), while relationship between electrical conductivity and ash content was very high (r=0.980).

honey; electrical conductivity; ash content

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