High performance liquid chromatography (HPLC) system was used
to determine phenolic contents of dietetic tea
samples (n=10) marketed in Turkey. The most abundant phenolic compounds were
gallic acid (ND–6.98 mg/100 g dw), protocatechuic
acid (0.98–45.61 mg/100 g dw), 4-hydroxybenzoic
acid (ND–31.56 mg/100 g dw), chlorogenic
acid (ND–0.73 mg/100 g dw), caffeic acid (11.27–154.55
mg/100 g dw), p-coumaric acid
(ND–6.56 mg/100 g dw), ferulic acid (ND–1.13 mg/100 g dw), ellagic acid
(0.10–1.76 mg/100 g dw), epicatechin (7.59–290.07 mg/100 g dw), rutin (ND–49.95
mg/100 g dw) and quercetin (1.15–10.50 mg/100 g dw). Based on the results of
this study, sensitivity and accuracy were good. Calibration curves had a good
linearity for all compounds (r2>0.999). The quantitation limit
ranged 0.010 to 0.050 µg/g in dietetic tea
products. Recoveries were in the range of 86.45-97.35%. Results had good
accuracy and reproducibility.
Konular | Gıda Mühendisliği |
---|---|
Bölüm | Araştırma Makaleleri |
Yazarlar | |
Yayımlanma Tarihi | 24 Aralık 2017 |
Gönderilme Tarihi | 9 Nisan 2017 |
Yayımlandığı Sayı | Yıl 2017 |
Bu eser Creative Commons Atıf-GayriTicari 4.0 (CC BY-NC 4.0) Uluslararası Lisansı ile lisanslanmıştır.
Akademik Gıda (Academic Food Journal) is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0).