Kalanchoe brasiliensis Cambess., a Promising Natural Source of Antioxidant and Antibiotic Agents against Multidrug-Resistant Pathogens for the Treatment of Salmonella Gastroenteritis

Table 2

In vitro antioxidant activity of the hydroethanolic extracts 30%, 50%, and 70% from Kalanchoe brasiliensis fresh leaves collected in January (HEJ30, HEJ50, and HEJ70) and September (HES30, HES50, and HES70) by 2,2-diphenyl-1-picryl-hydrazyl (DPPH) radical scavenging, phosphomolybdenum reducing power, and β-carotene bleaching assays.

Extract/standard substance	DPPH radical scavenging	Phosphomolybdenum reducing power	β-Carotene bleaching assay
	EC50 (μg/mL)	% RAA ascorbic acid	Inhibition of lipid peroxidation (%)
HEJ30	^a	^a	^a
HEJ50	^b	^b	^b
HEJ70	^c	^c,b	^c
HES30	^d	^d	^d
HES50	^e,a	^e	^e
HES70	^f	^f	^f
Ascorbic acid	^g	Not determined	Not determined
Quercetin	^h	Not determined	^g

Values are expressed as ; the experiment was made in triplicate. Equal letters in the same column mean no difference (p < 0.05) after variance analysis followed by Tukey’s test.