. 2020 May 29;27:e00483. doi: 10.1016/j.btre.2020.e00483

Table 2.

Evaluation of keratinolytic potentials of the study bacterial isolates.

S/N	Isolate code	Keratinase activity (U/mL)	Protein concentration (mg/mL)	Thiol concentration (mM)	Final pH	Feather degradation (%)
1.	FS-4	731.83 ± 14.14^h	0.47 ± 0.01^d	2.89 ± 0.11^g	8.3 ± 0.01^h	85.0 ± 1.41^f
2.	SS-8	510.91 ± 5.15^g	0.67 ± 0.00^e	2.09 ± 0.23^ef	8.6 ± 0.01ⁱ	81.0 ± 1.41^de
3.	SS-6	452.73 ± 28.28^f	0.49 ± 0.03^d	1.89 ± 0.02^de	8.2 ± 0.02^g	82.0 ± 2.83^def
4.	HS-2	400.01 ± 7.71^e	0.45 ± 0.02^cd	2.27 ± 0.08^f	8.2 ± 0.01^h	83.0 ± 1.41^ef
5.	BT5-7	372.12 ± 2.10^de	0.32 ± 0.03^b	0.81 ± 0.13^a	7.4 ± 0.02^a	67.0 ± 1.41^b
6.	FS-1	349.09 ± 2.57^cd	0.47 ± 0.01^c	1.29 ± 0.07^b	7.6 ± 0.01^c	74.5 ± 2.12^c
7.	SS-3	334.55 ± 12.86^c	0.27 ± 0.01^b	1.68 ± 0.19^cd	8.1 ± 0.01^f	80.0 ± 1.41^de
8.	BT4-2	331.82 ± 14.14^c	0.14 ± 0.02^a	0.69 ± 0.12^a	7.4 ± 0.01^b	64.5 ± 0.71^ab
9.	BT1-7	292.73 ± 20.57^b	0.72 ± 0.04^f	1.53 ± 0.11^bc	7.9 ± 0.04^e	68.5 ± 2.12^b
10.	FS-3	287.28 ± 5.14^b	0.09 ± 0.02^a	1.64 ± 0.04^cd	8.2 ± 0.01^h	78.5 ± 0.71^d
11.	BT1-8	281.81 ± 25.71^b	0.87 ± 0.05^g	2.71 ± 0.09^g	8.3 ± 0.02^h	81.5 ± 3.54^def
12.	SS-1	198.18 ± 15.43^a	0.12 ± 0.01^a	0.80 ± 0.04^a	7.7 ± 0.02^d	61.5 ± 0.71^a

The values are presented as mean and standard deviation of triplicate experiments; the values without the same superscript letters down the column are significantly different (P < 0.05).