Table 2. Changes in pH values of houndfish treated by DW, 1% AA, CTS 1, CTS 2, CTS 3, CTS 4 during ice storage

Samples	Storage time (days)
Samples	0	4	8	12	16	20
DW	6.17 ± 0.03^a	6.18 ± 0.05^a	6.26 ± 0.02^b	6.31 ± 0.02^d	6.41 ± 0.04^d	6.51 ± 0.04^d
1% AA	6.13 ± 0.13^a	6.15 ± 0.11^a	6.22 ± 0.06^ab	6.29 ± 0.01^cd	6.35 ± 0.05^c	6.47 ± 0.02^d
CTS 1	6.14 ± 0.06^a	6.16 ± 0.04^a	6.20 ± 0.02^a	6.26 ± 0.02^bc	6.31 ± 0.02^b	6.40 ± 0.02^c
CTS 2	6.10 ± 0.02^a	6.14 ± 0.02^a	6.19 ± 0.03^a	6.25 ± 0.02^bc	6.29 ± 0.01^b	6.38 ± 0.02^bc
CTS 3	6.09 ± 0.07^a	6.11 ± 0.04^a	6.17 ± 0.03^a	6.20 ± 0.02^a	6.24 ± 0.01^a	6.30 ± 0.01^a
CTS 4	6.10 ± 0.05^a	6.13 ± 0.03^a	6.18 ± 0.01^a	6.24 ± 0.04^ab	6.28 ± 0.02^ab	6.34 ± 0.04^ab

Values are mean ± SD (n = 3).
Values with different superscripts within the same column are significantly different (p < 0.05).
DW, houndfish treated with distilled water; 1% AA, houndfish treated with 1% acetic acid; CTS 1, houndfish treated with 0.5% chitosan; CTS 2, houndfish treated with 1% chitosan; CTS 3, houndfish treated with 1.5% chitosan; CTS 4, houndfish treated with 2% chitosan.