Table 4.

Values (g/100 g) of citric acid, lactic acid, and lactose of the yogurt without and with tannins during cold storage and results of variance analysis with Duncan’s test (p = 0.05) performed between the tannins and the storage times.

		Tannin Addition	Storage (Day)
			1	7	14	21	Significance
Citric acid	Control	-	3.13 ± 0.12 Ca*	2.83 ± 0.05 ABCb	2.24 ± 0.01 FGc	2.19 ± 0.01 FGc	***
	ARB	0.5%	3.20 ± 0.04 BCa	2.90 ± 0.12 ABCab	2.88 ± 0.05 Cb	2.83 ± 0.05 Cb	***
		1%	3.24 ± 0.03 ABCa	2.94 ± 0.04 ABb	3.09 ± 0.04 Aab	3.04 ± 0.04 Aab	***
	C	0.5%	3.28 ± 0.03 ABCa	2.86 ± 0.02 ABCb	2.10 ± 0.03 Gb	2.05 ± 0.03 Gb	***
		1%	3.29 ± 0.04 ABCa	2.98 ± 0.03 Ab	2.39 ± 0.09 EFb	2.34 ± 0.09 EFb	***
	FNG/R	0.5%	3.41 ± 0.15 Aa	2.76 ± 0.10 ABCDb	2.28 ± 0.03 Fc	2.23 ± 0.02 Fc	***
		1%	3.35 ± 0.09 ABa	3.01 ± 0.27 Ab	2.70 ± 0.03 Dc	2.65 ± 0.03 Dc	***
	NN	0.5%	3.12 ± 0.11 Ca	2.52 ± 0.26 Db	2.66 ± 0.24 Dc	2.61 ± 0.24 Dc	***
		1%	3.34 ± 0.10 ABa	2.79 ± 0.20 ABCb	2.66 ± 0.05 Dc	2.61 ± 0.05 Dc	***
	QF	0.5%	3.11 ± 0.12 ABCa	2.98 ± 0.09 Ab	2.91 ± 0.03 BCb	2.86 ± 0.03 BCb	***
		1%	3.28 ± 0.22 ABCa	2.98 ± 0.03 Ab	3.05 ± 0.12 ABb	3.00 ± 0.12 ABc	***
	QS-SOL	0.5%	2.94 ± 0.06 Da	2.66 ± 0.12 CDb	2.48 ± 0.02 Ec	2.43 ± 0.02 Ec	***
		1%	3.14 ± 0.15 Ca	2.68 ± 0.09 BCDb	2.78 ± 0.06 CDb	2.73 ± 0.06 CDb	***
Significance			***	***	***	***
		Tannin Addition	Storage (Day)
			1	7	14	21	Significance
Lactic acid	Control	0	11.82 ± 0.05 FGd	12.82 ± 0.06 Cc	13.84 ± 0.06 EFb	14.25 ± 0.09 Ga	***
	ARB	0.5%	12.29 ± 0.05 BCd	13.78 ± 0.10 Bc	15.23 ± 0.34 Bb	17.08 ± 0.18 Ba	***
		1%	12.40 ± 0.05 ABd	13.65 ± 0.03 Bc	16.14 ± 0.52 Ab	17.17 ± 0.27 Ba	***
	C	0.5%	12.17 ± 0.07 Cd	13.50 ± 0.30 Bc	14.52 ± 0.30 CDb	15.95 ± 0.07 CDa	***
		1%	12.49 ± 0.03 Ad	14.30 ± 0.19 Ac	16.00 ± 0.22 Ab	18.06 ± 0.25 Aa	***
	FNG/R	0.5%	11.67 ± 0.08 Gd	12.89 ± 0.29 Cc	13.91 ± 0.29 EFb	14.92 ± 0.20 Fa	***
		1%	12.02 ± 0.20 DEd	13.06 ± 0.02 Cc	14.08 ± 0.02 DEb	15.18 ± 0.02 EFa	***
	NN	0.5%	12.18 ± 0.16 CDd	12.84 ± 0.14 Cc	13.86 ± 0.14 EFb	15.12 ± 0.28 EFa	***
		1%	12.12 ± 0.10 CDd	12.99 ± 0.20 Cc	14.05 ± 0.14 DEb	15.56 ± 0.19 DEa	***
	QF	0.5%	11.90 ± 0.07 EFd	12.48 ± 0.21 Dc	13.50 ± 0.21 Fb	14.90 ± 0.34 Fa	***
		1%	11.79 ± 0.09 FGd	13.61 ± 0.16 Bc	15.02 ± 0.22 BCb	16.28 ± 0.38 Ca	***
	QS-SOL	0.5%	12.21 ± 0.12 BCd	13.17 ± 0.28 Cc	14.19 ± 0.28 DEb	15.17 ± 0.28 EFa	***
		1%	12.39 ± 0.05 ABc	13.08 ± 0.11 Cb	14.34 ± 0.50 DEa	15.48 ± 0.33 Ea	***
Significance			***	***	***	***
		Tannin Addition	Storage (Day)
			1	7	14	21	Significance
Lactose	Control	-	37.72 ± 0.99 Aa	32.47 ± 1.22 ABb	26.61 ± 1.03 BCc	23.85 ± 0.41 Ad	***
	ARB	0.5%	37.21 ± 0.64 Aa	33.30 ± 0.89 Ab	26.56 ± 2.20 BCc	21.13 ± 1.06 EFd	***
		1%	37.34 ± 0.49 Aa	30.55 ± 0.54 Db	22.74 ± 1.58 Dc	19.90 ± 0.09 Gd	***
	C	0.5%	34.72 ± 0.82 Ca	28.80 ± 1.00 Eb	25.80 ± 0.99 Cc	20.65 ± 0.64 FGd	***
		1%	35.77 ± 0.95 BCa	27.35 ± 0.45 Fb	22.97 ± 1.67 Dc	18.11 ± 0.49 Hd	***
	FNG/R	0.5%	35.07 ± 0.62 Ca	31.83 ± 0.29 BCb	27.71 ± 0.92 ABCc	23.00 ± 0.41 BCd	***
		1%	36.80 ± 0.88 ABa	31.81 ± 0.18 BCb	27.80 ± 1.06 ABCc	22.51 ± 0.43 BCDd	***
	NN	0.5%	35.89 ± 0.73 BCa	31.96 ± 0.31 Bb	28.65 ± 0.62 ABCc	23.44 ± 0.36 Bd	***
		1%	34.90 ± 0.37 Ca	30.77 ± 0.64 CDb	26.16 ± 2.15 BCc	22.38 ± 0.34 CDd	***
	QF	0.5%	35.07 ± 0.56 Ca	32.16 ± 0.46 ABb	29.16 ± 0.46 Ac	25.81 ± 0.40 CDd	***
		1%	34.71 ± 0.93 Ca	32.23 ± 0.56 ABb	27.85 ± 0.79 ABCc	22.85 ± 0.54 CDd	***
	QS-SOL	0.5%	37.78 ± 0.61 Aa	31.71 ± 0.03 BCb	29.27 ± 0.66 Ac	22.84 ± 0.49 BCDd	***
		1%	36.64 ± 0.50 ABa	32.54 ± 0.55 ABb	27.33 ± 1.52 ABCc	21.97 ± 0.38 DEd	***
Significance			***	***	***	***

Data (mean ± standard deviation; n = 3) were expressed as dry weight. Means followed by different lowercase letters indicate significant difference at p < 0.05 among tannins; means followed by different uppercase letters indicate significant difference at p < 0.05 between storage times; *** p < 0.001.