Endophytic Fungi as Pretreatment to Enhance Enzymatic Hydrolysis of Olive Tree Pruning

Table 2

Composition of solid fractions obtained after fungal pretreatment (followed by alkali extraction) and a subsequent, or not, acid hydrolysis (acid hydrolysis and nonacid hydrolysis, resp.). Data are expressed in % (w/w).

Sample	Ethanol extractives	Klason lignin	Acid soluble lignin	Total lignin	Glucan	Xylan	Arabinan
Nonacid hydrolysis
Control	4.6 ± 0.2	18.9 ± 0.1	4.2 ± 0.0	23.1 ± 0.1	31.3 ± 0.4	16.9 ± 0.6	3.6 ± 0.4
Hormonema sp.	4.8 ± 0.1	21.2 ± 0.8	4.2 ± 0.0	25.4 ± 0.8	29.6 ± 0.5	15.5 ± 0.3	3.4 ± 0.0
Ulocladium sp.	5.0 ± 0.2	21.8 ± 0.1	4.0 ± 0.0	25.9 ± 0.1	30.9 ± 0.8	15.5 ± 0.6	2.3 ± 0.1
Trametes sp.	4.0 ± 0.2	21.2 ± 0.1	4.3 ± 0.0	25.5 ± 0.1	29.9 ± 0.1	17.2 ± 0.1	2.2 ± 0.1
Acid hydrolysis
Control	4.1 ± 0.1	26.6 ± 0.2	4.0 ± 0.0	30.6 ± 0.2	31.1 ± 0.3	16.8 ± 0.2	0.5 ± 0.0
Hormonema sp.	3.2 ± 0.2	26.6 ± 0.4	3.9 ± 0.0	30.5 ± 0.4	31.0 ± 0.4	17.0 ± 0.3	0.7 ± 0.2
Ulocladium sp.	2.5 ± 0.2	26.3 ± 0.1	4.1 ± 0.0	30.4 ± 0.1	30.6 ± 0.6	17.6 ± 0.1	0.7 ± 0.1
Trametes sp.	3.5 ± 0.2	26.1 ± 0.6	3.6 ± 0.0	29.7 ± 0.6	33.8 ± 0.6	18.6 ± 0.3	0.3 ± 0.1