Butanol production from laccase-pretreated brewer’s spent grain

Table 2 Analysis of KL content and inhibitors in pretreated BSG

rPoxA1b:Mix_P.o. ratio	KL reduction vs control (%)	Acetic acid (g L⁻¹)	Formic acid (g L⁻¹)	Furfural (g L⁻¹)	5-HMF (g L⁻¹)
Control		0.86	0.41	n.d.	n.d.
1:0	29	0.80	0.38	n.d.	n.d.
0:1	− 15	0.86	0.43	n.d.	n.d.
1:1	1	0.88	0.40	n.d.	n.d.
2:1	10	0.80	0.41	n.d.	n.d.
LMS
1:0	20	0.83	0.40	n.d.	n.d.
0:1	− 43	0.85	0.41	n.d.	n.d.
1:1	23	0.85	0.38	n.d.	n.d.
2:1	22	0.86	0.38	n.d.	n.d.

n.d. not detected standard deviation ≤ 0.5%. Values indicating lignin increase are highlighted in italic

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