Chemical Composition and Antioxidant Activity of Aloe vera from the Pica Oasis (Tarapacá, Chile) by UHPLC-Q/Orbitrap/MS/MS

Table 2

Scavenging of the 1,1-diphenyl-2-picrylhydrazyl radical (DPPH^•), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS˙⁺), ferric-reducing antioxidant power (FRAP), and extraction yield of four plant parts of A. vera.

Parts from A. vera	PEE (%)^a	DPPH^•b	ABTS^•+c	FRAP^d
Peel	16.2	2.43 ± 0.14	34.32 ± 2.60	3.82 ± 0.23
Flower	12.6	1.25 ± 0.03^f	16.55 ± 2.30^e	2.01 ± 0.10
Gel	12.3	0.34 ± 0.01	2.06 ± 0.06	0.38 ± 0.01
Root	8.5	1.43 ± 0.08^f	17.54 ± 0.77^e	2.67 ± 0.16

^aPhenolic-enriched extract expressed in percentage; ^bantiradical DPPH activities are expressed as mM equivalent of trolox/g fresh weight, ; ^cABTS expressed as mM equivalent of trolox/g fresh weight; ^dFRAP expressed as mM equivalent of trolox/g fresh weight. ^e,fValues are not significantly different (at ). All measurements were repeated three times ().