Table 1.

Extracting yield, TPC and TFC of extracts from navel orange peel dried by different methods.

Drying Methods	Yield (%)	TPC (μM GAE/g DW)	TFC (μM QE/g DW)
FD	34.59 ± 0.27 b	75.42 ± 0.41 c	183.06 ± 1.57 a
SD	32.44 ± 0.31 d	77.75 ± 0.62 b	160.41 ± 1.22 c
OD50	33.33 ± 0.15 c	78.93 ± 1.04 b	182.57 ± 3.21 a
OD70	32.08 ± 0.11 d	81.36 ± 0.91 a	168.14 ± 0.92 b
MD	35.63 ± 0.12 a	71.72 ± 0.73 d	139.93 ± 3.28 d

The data are reported as average ± SD (three replicates). The different superscript lowercase letters within the same column indicate significant statistical difference (p < 0.05). GAE: Gallic acid equivalent. QE: Quercetin equivalent. DW: Dry weight. TPC: Total phenolic content. TFC: Total flavonoid content. FD: Freeze drying. SD: Shade drying. OD50: Hot-air oven drying at 50 °C. OD70: Hot-air oven drying at 70 °C. MD: Microwave drying.