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    Antioxidant and bioaccessibility characteristics of functional fruit and vegetable honeys produced by innovative method
    (Elsevier, 2022) Guldas, M.; Demircan, H.; Cakmak, I.; Oral, R. A.; Yildiz, E.; Gurbuz, O.; Sen, H.
    The functional fruit and vegetable honeys were produced by the natural bee feeding method with pomegranate, orange and black carrot concentrates. The natural enrichment method did not cause any negative effects on the quality criteria questioned in the standards such as moisture, pH, free acidity and HMF (Hydroxymethylfurfuraldehyde) content and the quality of the functional honeys obtained was high. Parallel to TPC contents, the antioxidant values of the honeys were increased 5.00-31.50, 16.09-53.96 and 21.18-39.72% by enrichment of orange, pomegranate, and black carrot concentrates. Gallic acid in pomegranate honey (14.52%) and chlorogenic acid in black carrot honey (27.01%) were determined as antioxidant components increased by enrichment. The enrichment process also led to an increase in the bioaccessibility characteristics. The increased antioxidant activity of functional honeys (DPPH) was verified by a high negative correlation value (R =-0.9103) and decreasing IC50 ratios in the opposite direction.
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    Investigation of overall and melamine migration from melamine bowls
    (Akademiai Kiado Zrt, 2019) Manav, H. M.; Gurbuz, O.; Cumbul, D.; Tokat, I. E.; Korkmaz, E.; Dağdelen, Adnan Fatih
    Overall and melamine migration have been determined for 60 samples of melamine resin bowls, which were purchased in various local markets in the area of Bursa, Turkey. The samples were exposed to food simulants 3% acetic acid, 10% ethanol aqueous solutions, and rectified (refined) olive oil at 100 degrees C for 30 min, and 50% ethanol aqueous solutions at 60 degrees C for 30 min. The LOQ value was calculated as 3.3 mg dm(-2) for overall migration and 0.126 mg kg(-1) for melamine migration. Research findings did not exceed the limit of overall migration level (10 mg dm(-2)). Also, melamine levels of all tested items found in the third assays were below the specific migration limit (SML) of 2.5 mg kg(-1) set out in the EU 10/2011 (EU, 2011) and Turkish Food Codex 2013/34 (TFC, 2013a). Some expensive as well as cheap products showed close migration levels. The increased cost of the item did not indicate a higher quality regarding health in this study.