Chemical and antioxidant investigations: Norfolk pine needles (Araucaria excelsa)

Figures & data

Table 1.  Araucaria excelsa extract antioxidant and total polyphenol contents based on DPPH free radical scavenging and Folin-Ciocalteu phenol assay, respectively (mean ± SD of three independent experiments).

Extract	DPPH (SC50 µg/mL)	TPC (mg/g extract)
70 % aqueous methanol	73 ± 12	37 ± 2
Methanol	138 ± 5	24 ± 3
Acetone	147 ± 4	32 ± 2
Ethyl acetate	297 ± 6	25 ± 3
Ascorbic acid	8 ± 1	–

Figure 1.  Phenolic compounds isolated from Norfolk pine needles.