Table 1. Protein, hydroxyproline, and collagen content in antler extracts

Sample	Protein (mg/g)	Hydroxyproline (μg/mg)	Collagen (μg/mg)
HWE	240.66±10.31	2.87±0.03	20.09±0.19
ET	295.05±11.22	4.15±0.02	29.07±0.12
UE	225.08±7.22	3.90±0.01	27.32±0.09
FE	284.68±6.15	3.37±0.02	23.58±0.11

Content value represents the mean±SD.
HWE, hot water extract; ET, enzyme hydrolysate; UE, ultrasonic extract; FE, how water extract of fermented deer antler.