Effects of Roasting on Antioxidant Status and Phenolic Profiles of Commercial Turkish Hazelnut Varieties (Corylus avellana L.).

The effect of roasting on antioxidant status and phenolic profiles of seven commercial Turkish hazelnut varieties (namely (Çakildak; Fosa; Karafindik; Mincane; Palaz; Sivri; and Tombul) was assessed. Samples were examined for their total phenolics; oxygen radical absorbance capacity (ORAC) values; condensed tannins; and phenolic acids (free and bound forms). Significant losses (p < 0.05) in […]

Polyphenolic Composition of Hazelnut Skin

Skins from different hazelnut samples were characterized for total polyphenol content; total antioxidant capacity (TAC); and their content in specific polyphenolic compounds. The main polyphenolic subclass; identified and quantified by means of HPLC-MS/MS; comprised monomeric and oligomeric flavan-3-ols; which accounted for more than 95% of total polyphenols. Flavonols and dihydrochalcones were 3.5% while phenolic acids […]

Allergy to hazelnut in adults: A two-step study

BACKGROUND: Although hazelnut consumption is very high in Turkey; the prevalence of hazelnut allergy is still unknown. This study's objective was to investigate the prevalence of hazelnut sensitisation and to verify its clinical importance using double-blind; placebo-controlled challenge (DBPCFC) in an adult population. METHODS: Prick-to-prick skin tests were performed with fresh hazelnut in 904 patients […]