. 2017 Oct 13;15(10):311. doi: 10.3390/md15100311

Table 1.

Angiotensin I-converting enzyme (ACE) inhibitory activity, recovery yield, protein and peptide contents of F. spiralis protein hydrolysate (FSPH) fractions obtained by ultrafiltration.

Sample	Yield (mg/g of DW FSPH)	ACE-Inhibition		Protein Content (mg/g of DW FSPH)	Peptide Content (mg/g of DW FSPH)
Sample	Yield (mg/g of DW FSPH)	Percentage	IC₅₀ Value (mg/mL)	Protein Content (mg/g of DW FSPH)	Peptide Content (mg/g of DW FSPH)
Fr₁ < 1 kDa	206.28	45.08 ± 0.66 ^a	1.850 ± 0.06 ^b	123.15 ± 2.78 ^a	43.81 ± 2.27 ^a
1 kDa ≤ Fr₂ < 3 kDa	53.72	41.93 ± 1.62 ^a	2.000 ± 0.06 ^b	336.28 ± 4.96 ^b	35.91 ± 1.58 ^a
Fr₃ ≥ 3 kDa	703.95	86.85 ± 1.89 ^b	0.500 ± 0.03 ^a	474.03 ± 4.44 ^b	243.82 ± 2.9 ^b

Values are mean ± SD (n = 3). Different superscript letters are significantly different (p < 0.05). IC₅₀ value defined as the concentration which inhibits 50% of the ACE activity (tested concentration = 2 mg/mL). Captopril, used as a positive control for ACE-inhibition, showed an IC₅₀ value of 0.163 ng/mL. DW, dry weight.