A Square Wave Voltammetry Study on the Antioxidant Interaction and Effect of Extraction Method for Binary Fruit Mixture Extracts

Table 2

DPPH and FRAP assays for different extraction methods from fruit and fruit mixture.

Assay	Sample		Extraction methods
			CE (μmol TE g^−1 dry extract)	UAE (μmol TE g^−1 dry extract)	HHPE (μmol TE g^−1 dry extract)
DPPH	IFE	Grape (G)	81.5 (10.4)^a	102.5 (5.2)^b	108.9 (0.7)^b
		Lemon (L)	116.9 (1.2)^a	133.1 (7.0)^b	145.5 (4.1)^b
		Blueberry (B)	150.4 (4.0)^a	209.9 (7.8)^b	218.4 (2.3)^b
	FME	L-G	92.9 (7.3)^a	98.1 (5.7)^a	101.7 (4.3)^a
		L-B	93.1 (0.9)^a	104.5 (0.2)^b	105.9 (1.1)^b
		G-B	103.6 (1.7)^a	103.6 (3.2)^a	108.7 (3.6)^a
FRAP	IFE	Grape (G)	75.5 (2.1)^a	81.6 (2.5)^ab	85.3 (1.7)^b
		Lemon (L)	80.0 (1.6)^a	88.5 (1.8)^b	91.2 (2.6)^b
		Blueberry (B)	89.6 (4.3)^a	112.0 (3.5)^b	114.9 (0.5)^b
	FME	L-G	96.1 (2.5)^a	96.9 (3.8)^a	97.1 (1.5)^a
		L-B	97.5 (0.3)^a	104.9 (2.0)^b	105.2 (1.4)^b
		G-B	104.1 (0.5)^a	104.9 (1.2)^a	108.8 (4.6)^a

Mean values of extraction methods with different superscript letters (a-b) in rows were significantly different () by Fisher’s test. Mean and standard deviation are presented in brackets.