Table 2 HMF contents and color changes of LIF stored at different temperatures for 6 mon

Temperature (°C)	Mon	HMF (µM/L)	Color
Temperature (°C)	Mon	HMF (µM/L)	L*	a*	b*
-	0	69.2±1.16^a	67.7±0.08^a	0.79±0.04^a	11.0±0.01^a
10	1	118±8.39^b	66.2±0.01^b	1.38±0.00^b	11.1±0.03^b
	2	156±6.94^cd	66.0±0.01^c	1.48±0.01^c	11.1±0.02^ab
	3	189±7.12^ef	65.4±0.01^d	1.59±0.01^d	11.3±0.02^c
	4	223±15.8^g	64.7±0.02^e	1.73±0.04^e	11.3±0.07^d
	5	235±7.95^gh	64.7±0.02^ef	1.85±0.02^f	11.4±0.03^d
	6	255±9.70^ij	64.6±0.02^fg	1.96±0.02^g	11.4±0.04^e
20	1	133±6.67^k	64.9±0.01^h	1.61±0.02^d	11.4±0.04^e
	2	170±6.67^dl	64.4±0.01^g	1.99±0.02^g	11.4±0.01^e
	3	203±8.25^f	63.9±0.01ⁱ	2.09±0.01^h	11.6±0.03^f
	4	224±17.6^g	63.3±0.06^j	2.33±0.01ⁱ	11.8±0.07^g
	5	247±6.91^hi	62.8±0.14^k	2.44±0.02^j	11.9±0.04^h
	6	272±13.4^mn	62.4±0.26^l	2.47±0.03^j	11.8±0.05^gi
30	1	140±3.33^k	63.7±0.01^m	2.33±0.01ⁱ	11.9±0.01^hi
	2	182±5.09^el	62.5±0.00^l	2.46±0.02^j	12.0±0.04^j
	3	222±8.74^g	61.4±0.01ⁿ	2.72±0.01^j	12.6±0.02^k
	4	268±8.98^jm	60.6±0.08^o	3.29±0.01^l	13.1±0.01^l
	5	274±7.64^mn	60.0±0.02^p	3.39±0.03^m	13.3±0.05^m
	6	287±14.1^no	59.0±0.04^q	3.49±0.05ⁿ	13.2±0.01ⁿ
40	1	144±5.09^ck	62.1±0.00^r	2.99±0.05^o	12.7±0.03^o
	2	190±3.33^ef	59.9±0.02^s	3.70±0.02^p	13.6±0.04^p
	3	228±8.07^g	57.9±0.01^t	4.12±0.03^q	14.6±0.01^q
	4	281±5.76^mn	56.6±0.01^u	4.88±0.02^r	15.6±0.02^r
	5	301±3.83^op	55.2±0.11^v	5.22±0.02^s	16.2±0.04^s
	6	314±7.83^p	53.7±0.11^w	5.31±0.06^t	16.2±0.04^s

¹⁾ Values are the mean±SD of triplicate measurements.
²⁾ Mean values in the same column with different letters are significantly different (p<0.05).
HMF, hydroxymethylfurfural; LIF, liquid infant formula.