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Table 3 Variables with their coded levels

From: Statistical design and optimization of single cell oil production from sugarcane bagasse hydrolysate by an oleaginous yeast Rhodotorula sp. IIP-33 using response surface methodology

Serial number	Variables	Low	Medium	High
Serial number	Variables	(-1)	(0)	(+1)
1	Xylose (g)	10	20	30
2	(NH₄)₂SO₄ (g)	0.5	0.75	1
3	Na₂HPO₄ (g)	0.188	0.2815	0.375
4	(KH₂PO₄) (g)	0.35	0.525	0.70
5	Yeast extract (g)	0.25	0.50	0.75
6	MgSO₄ (g)	0.175	0.3375	0.50
7	Time (h)	18	24	30
8	pH	4	5	6
9	Temp (°C)	30	34	38

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