1. Department of Chemistry, Karadeniz Technical University, Trabzon, Turkey
2. Department of Food Processing, Macka Vocational High School, Karadeniz Technical University, Trabzon, Turkey
3. Central Research Laboratory Application and Research Center, Recep Tayyip Erdogan University, Rize, Turkey
4. School of Applied Sciences, Bayburt University, Bayburt, Turkey
5. Bee and Bee Products Research and Application Center (HARUM), Hacettepe University, Ankara, Turkey
6. SBS Bilimsel Bio Çözümler Inc., Bee&You Propolis R&D Center, Istanbul, Turkey