ASC	Acid-soluble collagen
PSC	Pepsin-soluble collagen
WSG	Water-soluble gelatin
ROS	Reactive oxygen species
FTIR	Fourier-transform infrared spectroscopy
HPLC	High-performance liquid chromatography
DPPH	2,2-Diphenyl-1-picrylhydrazyl
ABTS	2,2′-Azinobis(3-ethylbenzothiazoline-6-sulfonic acid
FRAP	Ferric ion reducing antioxidant power
ACE	Angiotensin-converting enzyme
IL	Interleukin
MMP	Matrix metalloproteinase