Table 3. The molecular weight distribution of peptide extracts (<10 kDa) from Chickso, Hanwoo, and Wagyu shank

Contents	Chickso		Hanwoo		Wagyu
Contents	Before digestion	After digestion	Before digestion	After digestion	Before digestion	After digestion
Mn (Da)	508±15.54^A	285±6.19^B	324±5.84^B	296±4.42^B	534±10.11^A	280±7.38^B
Mw (Da)	1,954±59.62^A	395±9.27^B	527±9.69^B	435±8.53^B	2,136±76.19^A	325±9.32^B
Mz (Da)	4,821±73.83^A	730±11.25^B	901±11.38^B	799±10.52^B	5,268±112.38^A	381±15.25^C
Polydispersity	3.85±0.12^A	1.39±0.08^B	1.63±0.11^B	1.47±0.11^B	4.00±0.20^A	1.16±0.09
>10,000 Da (%)	1.63±0.05	-	-	-	2.05±0.04	-
5,000–10,000 Da (%)	7.86±0.78	-	-	-	10.28±0.15	-
3,000–5,000 Da (%)	12.74±0.88	0.18±0.01	0.11±0.01	0.15±0.01	12.36±0.38	-
1,000–3,000 Da (%)	26.65±1.25	5.36±0.08	12.98±0.35	7.74±0.86	24.48±2.54	-
200–1,000 Da (%)	39.83±3.12	80.43±1.49	69.99±2.89	77.30±3.98	41.35±3.15	85.70±1.17
<200 Da (%)	11.30±0.52	14.03±0.28	16.93±1.12	14.81±0.95	9.49±0.49	14.30±0.28

Each value is a mean±SD of three replicates.
Different uppercase letters in the same line indicate significant differences among Chickso, Hanwoo, and Wagyu shank peptides (p<0.05).
Mn, number-average molecular weight; Mw, weight-average molecular weight; Mz, Z-average molecular weight.