Optimization of Keratin Hydrolysate Extraction from Tannery Sheep Hair Waste

Table 5

Percentage particle size distribution for KH at different conditions by the intensity.

Trial		a	b	c	d	e
Peak 1	Mean size ± SD (d.nm)	786.5 ± 299	2475 ± 686	1125 ± 224	1206 ± 167	877.4 ± 124
	Intensity (%)	91.9	87.1	39.1	68.5	62.1
Peak 2	Mean size ± SD (d.nm)	3.25 ± 0.71	0.70 ± 0.08	193.3 ± 41.4	246 ± 31	267.0 ± 35
	Intensity (%)	8.1	12.9	36.8	31.5	37.9
Peak 3	Mean size ± SD (d.nm)	0.00	0.00	0.00	0.00	0.00
	Intensity (%)	0	0	0	0	0

Where extraction condition: (a) at 0.5 N, 80°C, and 3.5 hr; (b) at 1 N, 95°C, and 1.5 hr; (c) at 0.5 N, 95°C, and 2.5 hr; (d) at 1 N, 95°C, and 2.5 hr; (e) at 1 N, 65°C, and 3.5 hr.