TABLE 1.

Chromogenic substrates and corresponding references to the methods employed for the determination of proteolytic activities in Bifidobacterium animalis subsp. lactis

Activity	Substrate	Reference
Proteinase	Azocasein	46
	Universal Protease Substrate	42
	Succinyl-Ala-Glu-Pro-Phe- p-nitroanilide	29
Endopeptidase	N-Glutaryl-Ala-Ala-Phe- 4-methoxy-β-naphthylamide	25
	N-Benzoyl-Val-Gly-Arg- p-nitroanilide	6
	N-Benzoyl-Pro-Phe-Arg- p-nitroanilide
	N-Succinyl-Ala-Ala-Pro- Phe-p-nitroanilide
X-prolyl-dipeptidyl aminopeptidase	Arg-Pro-p-nitroanilide	11
Proline iminopeptidase	Pro-p-nitroanilide	11
General aminopeptidases	Leu-p-nitroanilide	11
	Lys-p-nitroanilide