Abstract
The effects of variety and geographical origin on vitamin and mineral composition of eight different varieties of hazelnut cultivated in the Black Sea Region of Turkey were studied. The mean contents of niacin, vitamin B 1, vitamin B 2, vitamin B 6 and α-tocopherol were 1.81±0.28, 0.30±0.07, 0.10±0.01, 0.240±0.05, and 35.53±3.82 mg/100 g, respectively. The mean contents of iron, zinc, copper, magnesium, manganese, calcium, potassium and sodium were 2.32±0.21, 1.95±0.25, 0.65±0.29, 144±14.86, 6.09±4.17, 83.5±5.14, 637±105.33 and 0.70±0.10 mg/100 g, respectively. Vitamin and mineral compositions of the varieties were not significantly different from each other. Geographical region differences did not significantly affect α-tocopherol, iron, manganese and calcium contents of the samples. Zinc, manganese, and sodium levels of Akçakoca samples were higher than for the other regions. Correlation analysis showed that α-tocopherol content correlated strongly with minerals (manganese, sodium, zinc, potassium) and vitamin B 6.
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