Identification of Polyphenols and Anti-Oxidant Capacity of Piper aduncum L

Table 2: DPPH Radical Scavenging Activities, Hydrogen Peroxide (H₂O₂) Scavenging Activities, Reducing Powers, and Total Polyphenol Content of P. aduncum L. Ethanol Extracts (mean ± SEM, n = 4) from Different Geographical Sub-Regions. All, Except the DDPH Radical Scavenging Assay (Concentration Range 0-300 ug/mL), were Performed at Extract Concentration of 100 µg/mL Including the Controls. AAE = Ascorbic Acid Equivalent, GAE = Gallic Acid Equivalent, NA = Not Applicable

Sub-Region	DDPH IC₅₀ (µg/mL)	H₂O₂ Scavenging Activity (%)	Reducing Power (µg AAE/mL)	Total Polyphenol Content (mg GAE/g)
San Isidro	85.24 ± 0.60¹^a	96.54 ± 0.04^a	121.03 ± 0.27^a	4.94 ± 0.05^a
Honolulo	92.74 ± 3.02^b	95.79 ± 0.09^b	100.36 ± 1.92^b	4.54 ± 0.05^b
Tingo María	142.87 ± 6.49^c	94.46 ± 0.08^c	77.96 ± 0.20^c	4.38 ± 0.03^c
Tulumayo	194.50 ± 1.07^d	90.44 ± 0.05^d	72.83 ± 0.04^d	3.91 ± 0.03^d
Marona Baja	219.27 ± 2.27^e	89.73 ± 0.14^e	53.49 ± 1.06^e	2.44 ± 0.06^e
α-tocopherol	32.36 ± 2.21^f	NA	NA	NA
Ascorbic acid	NA	99.1 ± 0.01^f	197.46 ± 0.60^f	NA

¹ Different letters in the same column indicate statistical differences (p < 0.05).