Table 1.

Effect of citric acid addition (300, 400, 500 mg/L) (A) and control (C) samples on pH, conductivity, protein solubility and texture parameters of LWE

Samples	Storage week (B)
	1	2	3	4
pH
C	7.74 ± 0.02a	7.41 ± 0.10a	7.63 ± 0.11a	6.53 ± 0.01b
300	7.45 ± 0.05c	7.53 ± 0.05c	7.39 ± 0.03c	6.17 ± 0.02d
400	7.37 ± 0.10c	7.52 ± 0.01c	7.31 ± 0.02c	6.19 ± 0.01d
500	7.41 ± 0.04c	7.43 ± 0.01c	7.36 ± 0.14c	6.20 ± 0.02d
Conductivity (mS/cm)
C	5.94 ± 0.09a	5.10 ± 0.71a	5.83 ± 0.49a	6.34 ± 0.08b
300	6.11 ± 0.03b	6.01 ± 0.07b	6.14 ± 0.04b	6.38 ± 0.08b
400	5.84 ± 0.11a	5.84 ± 0.08a	5.86 ± 0.07a	6.20 ± 0.14b
500	6.07 ± 0.00b	5.96 ± 0.02a	6.18 ± 0.04b	6.38 ± 0.08b
Protein solubility (mg/mL)
C	113.19 ± 0.09a	93.80 ± 0.35c	93.43 ± 0.26c	95.04 ± 0.17d
300	113.12 ± 0.26a	112.82 ± 0.07a	114.60 ± 0.00a	113.37 ± 3.95a
400	110.53 ± 3.93b	106.77 ± 1.75b	97.14 ± 0.96d	96.52 ± 3.67d
500	108.68 ± 0.09b	104.05 ± 0.00b	102.75 ± 0.09b	106.46 ± 0.17b
Hardness (N)
C	6.88 ± 1.43a	7.10 ± 0.46b	21.76 ± 0.86e	5.12 ± 0.01h
300	6.48 ± 0.11b	7.57 ± 0.47c	16.28 ± 1.80f	2.72 ± 0.04i
400	6.33 ± 0.13b	6.70 ± 0.50d	15.93 ± 0.33f	1.86 ± 0.15j
500	6.79 ± 1.11a	6.94 ± 0.17b	14.70 ± 0.78g	2.65 ± 0.02i
Work (mJ)
C	13,720.69 ± 985.95a	12,269.30 ± 54.81b	30,947.31 ± 1132.53c	21,484.89 ± 1261.01d
300	13,115.90 ± 565.00a	14,169.18 ± 2984.59c	28,652.63 ± 2669.03f	12,164.75 ± 307.46b
400	11,598.17 ± 895.63c	13,764.94 ± 2500.49a	29,710.49 ± 437.22f	10,430.31 ± 368.59c
500	13,607.97 ± 1699.07a	9024.38 ± 267.66e	24,647.28 ± 2956.36g	11,507.17 ± 11.14b

^*Different letters ^a–j (for each parameter) represents statistically significant difference (P < 0.05)