Analysis of Casein Biopolymers Adsorption to Lignocellulosic Biomass as a Potential Cellulase Stabilizer

Table 1

Pretreatment condition of corn stover and the resulting corn stover composition.

Pretreatment		Pretreatment severity; (log 𝑅0)^f	Yield of original components left in pretreated solids (%)
	Condition		Glucan	Xylan	Lignin
Untreated	NA	NA	34.6	14.9	20.2
Acid	0.98% H2(SO4), 5% SL, 140^∘C, 40 min	2.77	26.7–28.9	1.0	16.4
Lime	0.075 g/g^a Ca(OH)2, 19.5% SL, 120^∘C, 5 h	2.96	33.5	10.6	12.3
Alkali	1% NaOH, 8.3% SL^b, 60^∘C, 24 h	3.31	31.1–33.0	11.9	7.3
Extrusion	90^∘C^c, 180^∘C^d, 180^∘C^e, 45–90 sec, 1 : 5 SL	2.20	33.5–33.9	14.7	20.2
AFEX	50% SL, 140^∘C, 15 min	2.34	31.1	14.9	15.8

^ag Ca(OH)₂/g Biomass, ^bSL: solid loading (biomass: H₂O), ^cfeed zone temperature = 90^∘C, ^dtransition zone temperature = 180^∘C, ^edie zone temperature = 180^∘C, ^flog 𝑅₀ = log[time exp(H–R)/14.75], where 𝐻 is pretreatment temperature and 𝑅 is a reference temperature of 100^∘C.