Cucurbitaceae Seed Protein Hydrolysates as a Potential Source of Bioactive Peptides with Functional Properties

Table 4

Amino acid composition (g/100 g) of Cucurbitaceae seed protein hydrolysates.

Amino acid		Pumpkin (Cucurbita moschata), Alcalase	Pumpkin (Cucurbita moschata), Flavourzyme	Pumpkin (Cucurbita moschata), Protamex	Pumpkin (Cucurbita moschata), Neutrase	Pumpkin (Cucurbita pepo con. Pepo var. styriaca), Alcalase	Seinat (Cucumis melo var. tibish), Trypsin + Pepsin
		Venuste et al. [17]	Venuste et al. [17]	Venuste et al. [17]	Venuste et al. [17]	Nourmohammadi et al. [24]	Siddeeg et al. [25]
Essential amino acid	Histidine (His)	1.37	1.43	1.17	1.6	1.67	2.06
	Threonine (Thr)	1.88	1.59	1.74	1.77	2.01	2.64
	Valine (Val)	3.09	2.55	2.55	3.57	3.45	3.63
	Methionine (Met)	2.34	1.99	1.76	2.38	—	1.96
	Phenylalanine (Phe)	6.02	4.61	4.82	6.2	4.29	4.39
	Isoleucine (Ile)	2.72	3.00	2.57	2.73	3.10	3.36
	Leucine (Leu)	4.7	3.7	4.43	4.87	5.64	5.32
	Lysine (Lys)	2.44	2.2	2.58	2.49	3.00	1.78
	Tryptophan (Try)	0.52	0.77	0.15	0.16	—	—
Nonessential amino acid	Tyrosine (Tyr)	—	—	—	—	2.88	2.25
	Cysteine (Cys)	—	—	—	—	—	7.40
	Aspartic acid (Asp)	6.47	5.47	5.72	6.44	7.56	6.79
	Glutamic acid (Glu)	15.89	15.09	16.18	16.87	17.19	12.00
	Serine (Ser)	3.74	3.39	3.72	3.79	4.04	2.98
	Glycine (Gly)	3.86	4.28	3.92	4.06	3.95	4.08
	Arginine (Arg)	11.6	11.82	11.78	13.65	—	9.68
	Proline (Pro)	2.04	1.84	1.83	2.33	13.60	—
	Alanine (Al)	3.41	2.70	2.81	3.11	3.47	—

x: methionine + cysteine; y: tyrosine + phenylalanine.