. 2017 Feb 23;10:48. doi: 10.1186/s13068-017-0734-z

Table 2.

Acetic acid catalyzes the hydrolysis of wood polysaccharides during pretreatment

Added acetic acid	Xylose			Total effective xylose release	Glucose			Total effective glucose release
Added acetic acid	Monomeric	Oligomeric	Furfural	Total effective xylose release	Monomeric	Oligomeric	HMF	Total effective glucose release
0.0	4.01 ± 1.42^a	59.1 ± 7.62^a	3.61 ± 1.60^a	84.4 ± 19.1^a	1.40 ± 0.16^a	10.2 ± 1.67^a	0.41 ± 0.08^a	13.0 ± 0.97^a
3.2	7.93 ± 1.05^b	56.3 ± 8.60^a	10.8 ± 4.84^a	97.4 ± 18.9^a	2.52 ± 0.77^a,b	14.9 ± 2.81^a	1.16 ± 0.53^a	19.1 ± 3.95^a,b
6.3	11.2 ± 2.28^c	72.1 ± 19.4^a	21.4 ± 9.12^a	148 ± 25.9^b	3.36 ± 0.76^b,c	19.1 ± 3.85^b	1.61 ± 0.91^a	27.7 ± 3.90^b,c
9.4	9.90 ± 3.60^a	74.0 ± 22.9^a	31.0 ± 16.3^a	153 ± 44.2^b	2.24 ± 0.87^c	22.7 ± 2.72^b	3.14 ± 1.74^a	29.4 ± 4.23^c

All values are in milligrams per gram ± standard error of the mean. Total effective sugar release is the sum of all three fractions, with degradation products converted on a molar ratio to xylose. Pretreatments were at 180 °C for 70 min. Superscripts indicate statistical significance at p value <0.05