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

Table 1

Composition of liquid fractions collected after fungal pretreatment, alkali extraction, and acid hydrolysis expressed in g L⁻¹. Consistency of fungal, mild alkali, and acid hydrolysis treatments was 20%, 5%, and 17%, respectively. Glc: glucose; Xyl: xylose; Ara: arabinose; AcH: acetic acid; GOS: glucooligosaccharides; XOS: xylooligosaccharides; AOS: arabinooligosaccharides; HMF: hydroxymethyl furfural; Furf: furfural.

Sample	Glc	Xyl	Ara	AcH	GOS	XOS	AOS	HMF	Furf
Fungal treatment
Control	4.12	1.50	7.58	2.95	3.03	0.56	0.18	0.00	0.00
Hormonema sp.	0.98	2.48	6.80	2.44	1.50	0.53	0.42	0.00	0.00
Ulocladium sp.	1.02	0.54	0.00	2.71	1.96	0.44	0.00	0.05	0.00
Trametes sp.	0.46	0.55	4.26	2.60	1.76	0.00	0.00	0.08	0.00
Mild alkali treatment
Control	0.23	0.16	0.41	0.02	0.16	0.00	0.00	0.00	0.00
Hormonema sp.	0.08	0.19	0.53	0.03	0.10	0.01	0.02	0.00	0.00
Ulocladium sp.	0.06	0.06	0.00	0.00	0.09	0.02	0.00	0.00	0.00
Trametes sp.	0.02	0.04	0.10	0.00	0.13	0.00	0.00	0.00	0.00
Acid hydrolysis treatment
Control	1.10	0.13	1.78	0.31	7.40	2.50	3.95	0.04	0.03
Hormonema sp.	0.98	0.16	1.02	0.22	4.11	1.73	4.42	0.01	0.01
Ulocladium sp.	0.95	0.09	0.59	0.18	3.51	1.35	2.20	0.01	0.00
Trametes sp.	0.91	0.20	1.69	0.29	2.09	2.48	2.06	0.01	0.01