Antioxidant potential of Amorphophallus paeoniifolius in relation to their phenolic content

Figures & data

Table 1.  Effect of alcoholic extract of Amorphophallus paeoniifolius on inhibition of lipid peroxidation and H₂O₂ scavenging activity. (Values are mean of three replicates.)

Concentration of extract (μg/ mL)	Inhibition (%)
	Lipid peroxidation	H2O2 scavenging activity
50	57.5	67.2
40	49.6	61.7
30	42.5	53.8
20	35.4	46.5
10	24.5	30.2
5	12.6	16.3
1	7.2	4.3

Figure 1.  Scavenging effects of A. paeoniifolius extract (APE) on DPPH radical. Butylated hydroxyl toluene (BHT) was used as a positive control. Values represent the mean ± SD (n = 3).

Figure 2.  Scavenging effects of A. paeoniifolius extract (APE) on ABTS radical. Butylated hydroxyl toluene (BHT) was used as a positive control. Values represent the mean ± SD (n = 3).

Figure 3.  Presence of total phenolic content in A. paeoniifolius (APE). The phenolic content of the extract was found to be 44.58 mg GAE/g powder. Values represent the mean ± SD (n = 3).

Figure 4.  Relationship between antioxidant activity and total phenolic content in A. paeoniifolius.

Figure 5.  The HPTLC chromatogram of Amorphophallus paeoniifolius leaf extract at 260 nm. The chromatogram shows five major peaks when scanned at 260 nm using toluene: ethyl acetate: glacial acetic acid (12.5: 7.5: 0.5 v/v) as mobile phase. The three peaks (1, 3 and 4) of Rf values are gallic acid (0.06), resveratrol (0.41) and quercetin (0.47), respectively, and two others (2 and 5) remain to be identified.