Effects of different tea concentrations and extraction durations on caffeine and phenolics of tea liqueurs    
Yazarlar (2)
Prof. Dr. Mustafa BAYRAM Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Prof. Dr. Cemal KAYA Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Journal of Food Measurement and Characterization
Dergi ISSN 2193-4126 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 03-2018
Cilt No 12
Sayı 1
Sayfalar 285 / 291
DOI Numarası 10.1007/s11694-017-9639-6
Makale Linki http://link.springer.com/10.1007/s11694-017-9639-6
Özet
In this study, effects of different tea concentrations and extraction durations on some characteristics of tea liqueurs were investigated. Total phenolics of tea liqueurs produced with different tea ratio and extraction duration were determined as 1496.8–4796.2 mgGAE/L. Caffeine was the major compound in all liqueur samples. Among phenolic compounds, gallic acid was the major phenolic and it was followed by epigallocatechin. The liqueurs with 7.5% tea ratio and 15–30 days extraction durations had the greatest total catechin contents. Sensory analyzes revealed that the liqueurs produced with 5% tea ratio and 15 and 30 day extractions were the most favourable samples.
Anahtar Kelimeler
Tea | Liqueur | Extraction | Phenolics | Caffeine