Kurumun Atıf Alan Makalesi
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Total phenolics, total carotenoids, individual phenolics and antioxidant activity of ginger (Zingiber officinale) rhizome as affected by drying methods
Scopus
Toplam 178 atıf DOI
This study was conducted to evaluate total phenolic content, antioxidant activity, total carotenoids and phenolic compounds of ginger (Zingiber officinale) rhizomes dried using different drying methods (oven, microwave, freeze and room-air drying). Freeze-dried ginger rhizomes exhibited significantly (p < 0.05) higher total phenolics (931.94 mgGAE/100 g), antioxidant activity (82.00%) and total carotenoids (13.17 μg/g) than those dried using other techniques. Oven-dried ginger showed higher values for all individual phenolic compounds detected in this study as compared to those dried using other methods. The dominant phenolic compounds of dried ginger included (+)-catechin (250.02 mg/100 g), gallic acid (197.03 mg/100 g) and 3, 4-dihydroxybenzoic acid (116.07 mg/100 g). Drying of ginger rhizome using oven and freeze-drying methods my result in improved contents of bioactive compounds and higher antioxidant activity. Correlation analyses for biochemical composition of ginger rhizomes showed that total phenolics were positively correlated with antioxidant activity (r2 = 0.973, p < 0.001).
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Bioactive compounds, antioxidant activity and sensory properties of Tarhana, a traditional fermented food, enriched with pickling herb (Echinophora tenuifolia L.)
Scopus
Havuzumuzda 6 atıf almış
The addition of pickling herb (Echinophora tenuifolia L.; PHET) resulted in increase in the total phenolic and flavonoid contents in Tarhana in both free and bound fractions' extracts. The antioxidant activity of Tarhana containing 2%, 6% and 18% PHET was 81.45–81.72% in bound fraction whereas in free fraction it was up to 88.27% (6% PHET). The gallic acid contents of Tarhana with PHET in free fraction were between 0.49 mg L−1 (10%) and 2.75% (14%) and that in bound fraction varied between 0.36 mg L−1 (10%) and 3.61 mg L−1 (18%). Statistically significant differences (with control) were observed among the contents of individual phenolic compounds in free and bound fractions of Tarhana depending on PHET concentrations. The addition of higher PHET contents in Tarhana showed negative effects hence, a low concentration (2%) of PHET is recommendable for Tarhana with enhanced nutritional properties.
Atıf Yapan Makale Bilgileri
Kurumlar (2)
King Saud University
Riyadh, Saudi Arabia
Selçuk Üniversitesi
Selçuklu, Turkey