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

Table 3

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

Amino acid		Seinat (Cucumis melo var. tibish)	Bitter melon (Momordica charantia)	Watermelon (Citrullus vulgaris)	Watermelon (Citrullus vulgaris) cv. Mateera	Watermelon (Citrullus vulgaris) cv. Sugar baby	Pumpkin (Cucurbita pepo con. Pepo var. styriaca)
		Siddeeg et al. [25]	Horax et al. [18]	Jyothi lakshmi and Kaul [39]	Wani et al. [12]	Wani et al. [12]	Nourmohammadi et al. [24]
Essential amino acid	Histidine (His)	2.21	3.71	2.46	1.86	2.15	1.83
	Threonine (Thr)	2.87	1.6	3.47	3.49	3.17	1.88
	Valine (Val)	4.42	—	2.91	—	—	3.35
	Methionine (Met)	2.47	2.75	0.33	0.97	0.88	—
	Phenylalanine (Phe)	5.30	4.11	5.18	5.36	5.83	4.22
	Isoleucine (Ile)	3.40	3.27	1.44	5.17	5.21	2.88
	Leucine (Leu)	6.27	6.57	7.44	7.09	7.19	5.33
	Lysine (Lys)	2.76	8.49	2.18	3.21	2.92	2.65
	Tryptophan (Try)	—	—	1.07	0.96	1.17	—
Nonessential amino acid	Tyrosine (Tyr)	2.86	4.51	2.85	3.89	3.96	2.32
	Cysteine (Cys)	5.91	1.27	0.96	6.31	6.09	—
	Aspartic acid (Asp)	6.72	8.54	9.48	9.14	10.39	7.22
	Glutamic acid (Glu)	14.48	14.8	20.71	17.69	16.75	14.28
	Serine (Ser)	3.93	4.17	5.91	4.87	4.96	3.97
	Glycine (Gly)	3.86	4.13	5.82	4.86	5.04	4.23
	Arginine (Arg)	12.42	10.1	16.89	14.53	15.21	10.65
	Proline (Pro)	—	4.56	—	4.21	3.95	—
	Alanine (Al)	—	4.17	—	4.89	5.05	3.14