Element content of propolis from different regions of Turkey

Levels of Na, K, Ca, Mg, N, Cu and Zn of propolis samples originating from different geographic locations of Turkey were investigated. Sodium was the most abundant element in the samples. The calcium content was found between 0.118-0.0793 mg g(-1). The highest magnesium content was found in samples from Yozgat region, whereas the lowest was in those of Adana region. Potassium content changed between 0.121-0.364 mg g(-1). There were no statistical differences in nitrogen levels. Interestingly, no sulphur (S) was detected in propolis samples. The copper and zinc content changed between 0.045-0.096 mg g(-1), 0.176-0.676 mg g(-1), respectively. Finally, mineral content of Turkish propolis was about the same as the commercial propolises from other countries. The content of Cu in propolises was generally within safe limits, and compared well with levels in foods from Turkish Food Codex, though Zn contents were high.