ESI-MS	Electrospray ionization mass spectrometry
FT-IR	Fourier transform infrared spectroscopy
NMR	Nuclear magnetic resonance
DA	Degree of acetylation
DP	Degree of polymerization
PAL	Phenylalanine ammonia lyase
PPO	Polyphenoloxidase
POD	Peroxidase
CHI	Chitinase
CCH	Crude chitosan
TOCH	Total oligochitosan
DCH	Deacetyated chitosan
DP < 5	Oligosaccharide fraction with a degree of polymerization less than five
DP5–6	Oligosaccharide fraction with a degree of polymerization between five and six
DP7–9	Oligosaccharide fraction with a degree of polymerization between seven and nine
DP > 9	Oligosaccharide fraction with a degree of polymerization greater than nine
DP5	Oligochitosan with a degree of polymerization of five
DEPT-135	Distortionless enhancement by polarization transfer (135°)
COSY	Correlation spectroscopy
NOESY	Rotating frame nuclear Overhauser effect spectroscopy
HSQC	Heteronuclear single-quantum correlation spectroscopy
GlcN	Glucosamine