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

Table 4

Total polyphenolic content (TPC) and total flavonoid content (TFC) for different extraction methods from fruit and fruit mixture.

Assay	Sample		Extraction methods
			CE	UAE	HHPE
TPC (mg GA g^−1 dry extract)	IFE	Grape (G)	7.64 (0.08)^a	8.77 (0.54)^ab	9.81 (0.50)^b
		Lemon (L)	9.56 (0.39)^a	11.17 (0.40)^b	12.35 (0.02)^c
		Blueberry (B)	10.09 (0.15)^a	12.10 (0.10)^b	13.75 (0.31)^c
	FME	L-G	4.16 (0.01)^a	6.09 (0.00)^b	6.16 (0.10)^b
		L-B	5.10 (0.28)^a	6.30 (0.05)^b	6.38 (0.10)^b
		G-B	5.50 (0.05)^a	6.65 (0.25)^b	6.67 (0.11)^b
TFC (mg QE g^−1 dry extract)	IFE	Grape (G)	2.16 (0.09)^a	2.30 (0.01)^ab	2.38 (0.03)^b
		Lemon (L)	2.77 (0.02)^a	2.84 (0.01)^b	2.92 (0.00)^c
		Blueberry (B)	2.06 (0.08)^a	2.19 (0.01)^ab	2.28 (0.05)^b
	FME	L-G	1.48 (0.12)^a	1.57 (0.02)^a	1.63 (0.02)^a
		L-B	1.46 (0.06)^a	1.51 (0.06)^a	1.56 (0.04)^a
		G-B	1.34 (0.04)^a	1.42 (0.02)^a	1.52 (0.02)^b

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