Table 1. Moisture, fat, protein, and collagen content (%) of beef during aging

Company	Component	Day 0	Day 7	Day 14	Day 21	Day 28	Day 42
A	Moisture	59.93±1.20^C	61.98±0.88^B	63.66±0.17^A	58.77±0.78^C	63.83±0.54^A	64.10±0.13^A
	Fat	15.69±0.74^B	13.64±0.37^C	12.10±0.11^D	20.01±0.71^A	14.24±0.29^C	12.66±0.08^D
	Protein	19.97±0.35^CD	20.69±0.34^B	21.47±0.24^A	19.35±0.45^E	20.26±0.12^BC	19.63±0.26^DE
	Collagen	2.31±0.12^A	2.01±0.10^AB	1.60±0.09^C	1.96±0.24^B	1.87±0.03^B	0.34±0.15^D
B	Moisture	63.78±0.67^B	62.30±0.98^D	63.39±0.66^BC	60.31±0.12^E	65.16±0.27^A	62.58±0.22^CD
	Fat	14.68±0.24^B	14.81±0.21^B	11.82±0.10^D	18.22±0.22^A	9.68±0.14^E	13.79±0.25^C
	Protein	19.05±0.20^D	18.82±0.52^D	22.10±0.07^B	20.31±0.24^C	23.14±0.22^A	19.81±0.26^C
	Collagen	2.07±0.13^AB	2.31±0.09^A	1.91±0.03^BC	2.01±0.27^ABC	1.70±0.17^C	1.82±0.26^BC
C	Moisture	71.75±0.50^B	73.47±0.13^A	71.09±0.50^BC	69.14±0.35^D	69.01±0.43^D	70.54±0.33^C
	Fat	5.80±0.20^C	2.70±0.22^F	5.27±0.28^D	6.72±0.35^B	8.42±0.28^A	4.09±0.26^E
	Protein	20.83±0.34^D	20.30±0.17^E	21.17±0.09^CD	22.01±0.16^B	21.39±0.19^C	22.51±0.08^A
	Collagen	1.37±0.02^AB	1.39±0.29^AB	0.76±0.43^C	1.54±0.17^A	1.55±0.08^A	0.94±0.30^BC

Values are represented as mean±SD.
Different superscript letters in the same row indicate significant differences at p<0.05.