Ahmet Ferit ATASOY, Ayşe Dilek ATASOY, M. İrfan YESLINACAR

Evaluation of Fluoride Concentration and Daily Intake by Human from Tea Infusions

Bu çalışmanın amacı Türk ve Seylan siyah ve yeşil çaylarının 10 dakika demlendikten sonraki Florürmiktarlarını ve bu miktarların günlük flor ihtiyacını karşılama oranlarını ion selektif elektrot kullanarakbelirlemektir. Demleme sonrası çayların florür miktarları 1.010 ile 2.89 mg L-1 arasında değişmiştir. Siyahve yeşil Türk çaylarının florür miktarlarının Seylan çaylarından daha yüksek olduğu belirlenmiştir. Yetişkinve çocuk bir birey günde 1000 ml siyah çay (10 bardak veya 5 fincan) tükettiğinde sırasıyla günlük florür ihtiyacının %30.2-50.0 ve %48.3-80.0ini karşılayacaktır. İnsanlar gıda, su, hava ve diş macunları gibi farklıkaynaklardan florür almaktadırlar. Bu nedenle, özellikle sularında fazla miktarda florür bulunanbölgelerde, çocuklar gelişme dönemlerinde florisis riski ile karşı karşıyadır.

Demlenmiş Çayların Florür Miktarlarının ve Günlük Florür Alımının Belirlenmesi

The objectives of this study were to determine the fluoride content of tea and the percentage of theaverage daily intake of fluoride from tea extracts after 10 min brewing. The fluoride content in infusion ofcommercially available Turkish and Ceylon black, green teas were determined by ion selective electrode. The content of fluoride in tea infusion ranged from 1.010 to 2.89 mg L-1 . The fluoride concentrationsdetermined in Turkish black and green tea infusion were higher than in Ceylon black and green tea. Theintake of fluoride will be in the range of 30.2-50.0% and 48.3-80.0% for adult and children-teenagers teadrinkers respectively, consuming ten glasses or five cups (1000 ml) of black tea per day. People are oftenexposed to multiple sources of fluoride, such as in food, water, air and excessive use of toothpaste. Thecontrol of tea quality is important to protect the human against to too high uptake of this element fromblack tea, which is the most popular beverage in Turkey. Excessive intake of fluoride with black tea,especially in the regions with its high level in the drinking water, increases the risk of dental fluorosis inchildren during the years of tooth development.

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