. 2022 Mar 4;8(3):e09044. doi: 10.1016/j.heliyon.2022.e09044

Table 2.

Inhibitory action of pigments shell and spine extracts on protein denaturation.

Test sample	Concentration (μg/ml)	% protein inhibition	IC₅₀ (μg/ml)
Shell pigment	1.25	32.92 ± 1.24^e	9.62
	2.5	36.30 ± 0.88^de
	5.0	45.63 ± 1.44^c
	10.0	50.62 ± 0.70^bc
	20.0	67.84 ± 1.35^a
Spine pigment	1.25	0.00 ± 0.00^h	----
	2.5	0.00 ± 0.00^h
	5.0	4.64 ± 1.40^h
	10.0	16.10 ± 0.40^g
	20.0	22.72 ± 2.00^f
Aspirin	1.25	39.83 ± 1.30^d	3.84
	2.5	47.90 ± 1.91^c
	5.0	54.11 ± 1.49^b
	10.0	47.71 ± 1.33^a
	20.0	71.21 ± 1.57^a

Values shown as means ± SD (n = 3); Significant differences indicated by different letters (p ≤ 0.05).