Quality evaluation of renowned honey varieties available in local markets of Karachi
2008
Asadullah (Pakistan Council of Scientific and Industrial Research Labs. Complex, Karachi (Pakistan). Food and Marine Resources Research Centre) | Kamran, M. (Pakistan Council of Scientific and Industrial Research Labs. Complex, Karachi (Pakistan). Food and Marine Resources Research Centre) | Umar, Z.N. (Pakistan Council of Scientific and Industrial Research Labs. Complex, Karachi (Pakistan). Food and Marine Resources Research Centre) | Jamil, K.
In order to evaluate quality and standard, the physicochemical properties of commercially available brands of honey samples from the markets of Karachi were studied. The samples were analyzed for pH, acidity, moisture, specific gravity, refractive index, ash, conductivity, brix, fructose (F), glucose (G), F/G ratio, reducing sugars and total sugars. The results were compared with Codex Alimentarius Commission (1993) and the studies conducted by other scientist. In honey samples pH ranged from 3.05 to 3.45, free acidity 27.8 to 52.0 mq/kg, moisture 18.9 to 21.8%, specific gravity 1.36 to 1.51, refractive index 1.4860 to 1.4936, ash 0.115 to 0.211%, conductivity 0.335 to 0.507 mS/cm, brix 78.9 to 81.8, fructose 29.0 to 38.98%, glucose 28.09 to 38.33%, F/G ratio 0.847 to 1.345, reducing sugars 64.24 to 75.98% and total sugars 69.80 to 80.29%. Two brands were found with somewhat high acidity whereas four brands had slightly high moisture content. A loose packed honey was found adulterated with 17% sucrose.
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