Table 2 The pH and sensory of ice cream (I1) during storage at –18℃, –6℃, –1℃, and 4℃

Day/–18℃	pH	Sensory	Day/−6℃	pH	Sensory	Day/−1℃	pH	Sensory	Day/4℃	pH	Sensory
0	6.42±0.03^e	9.00±0.00^a	0	6.42±0.03^f	9.00±0.00^a	0	6.42±0.03^b	9.00±0.00^a	0	6.42±0.03^d	9.00±0.00^a
5	6.44±0.06^de	9.00±0.00^a	5	6.46±0.05^def	7.67±1.15^ab	5	6.45±0.03^ab	7.76±1.15^b	5	6.63±0.02^c	8.00±0.00^b
11	6.44±0.03^de	9.00±0.00^a	11	6.46±0.00^cdef	7.67±1.15^ab	11	6.47±0.04^ab	7.33±1.53^b	11	6.74±0.05^b	6.67±1.15^c
18	6.44±0.06^cde	9.00±0.00^a	18	6.44±0.06^ef	7.67±1.15^ab	18	6.47±0.09^ab	6.67±0.58^bc	18	6.60±0.02^c	5.33±0.58^d
25	6.48±0.04^bcde	9.00±0.00^a	25	6.52±0.00^abcdef	7.67±1.15^ab	25	6.49±0.03^ab	6.00±0.00^cd	25	6.80±0.05^ab	4.33±0.58^e
32	6.49±0.02^bcde	9.00±0.00^a	32	6.53±0.04^abcdef	7.67±1.15^ab	32	6.50±0.09^ab	5.33±1.15^de	32	6.83±0.03^ab	3.33±0.58^f
39	6.49±0.00^bcde	9.00±0.00^a	39	6.50±0.21^bcdef	7.67±1.15^ab	39	6.51±0.02^ab	4.67±0.58^ef	39	6.87±0.07^a	1.67±0.58^g
46	6.48±0.00^bcde	9.00±0.00^a	46	6.51±0.07^abcdef	7.67±1.15^ab	46	6.52±0.00^ab	4.00±1.00^fg	46	6.87±0.03^a	1.33±0.58^g
53	6.52±0.07^bc	9.00±0.00^a	53	6.56±0.05^abcde	7.33±1.53^b	53	6.51±0.05^ab	3.33±0.58^gh	53	6.88±0.03^a	1.00±0.00^g
63	6.50±0.01^bcd	9.00±0.00^a	63	6.55±0.01^abcdef	7.00±0.00^b	57	6.55±0.01^a	2.67±1.15^h
67	6.51±0.07^bcd	9.00±0.00^a	67	6.57±0.13^abcde	7.00±0.00^b	64	6.51±0.02^ab	2.33±0.58^hi
74	6.52±0.02^b	9.00±0.00^a	74	6.58±0.00^abcd	7.00±0.00^b	71	6.51±0.04^ab	1.00±0.00ⁱ
81	6.52±0.03^b	9.00±0.00^a	81	6.59±0.06^abc	7.00±0.00^b	78	6.52±0.03^ab	1.00±0.00ⁱ
88	6.53±0.05^ab	9.00±0.00^a	88	6.61±0.02^ab	7.00±0.00^b	85	6.52±0.11^ab	1.00±0.00ⁱ
95	6.53±0.02^ab	9.00±0.00^a	95	6.62±0.03^ab	7.00±0.00^b	92	6.53±0.10^ab	1.00±0.00ⁱ
102	6.60±0.03^a	9.00±0.00^a	102	6.62±0.01^ab	7.00±0.00^b	99	6.56±0.12^a	1.00±0.00ⁱ
109	6.55±0.04^ab	9.00±0.00^a	109	6.65±0.05^a	7.00±0.00^b	106	6.53±0.04^ab	1.00±0.00ⁱ

All values are mean standard deviation of three replicates.
^a–g Means within a column with different letters are significantly different (p<0.05).