Table 1 Chemical compositions of p-TsOH fractionated poplar NE222 samples under different treatment conditions.

The numbers in the parentheses are component yields based on components in the untreated NE222. Numbers indicate what percent of the sum of the integrals for structures Aa and Ca is accounted for by the integral for each individual structure.

Sample labelWISsSpent liquor
Solids yield (%)Glucan (%)Xylan (%)Mannan (%)Lignin (%)Glucose
(g/liter)
Xylose
(g/liter)
Mannose
(g/liter)
Acetic acid
(g/liter)
Furfural
(g/liter)*
Untreated NE22210045.714.94.623.4
P70T50t2078.956.8 (97.9)8.8 (46.7)3.3 (56.4)20.6 (69.4)
P70T65t2068.461.6 (92.2)6.5 (29.8)4.3 (63.9)11.8 (34.4)
P70T50t3574.462.2 (101.1)7.4 (37.0)4.3 (68.9)19.2 (61.0)1.1 (2.2)8.9 (52.4)1.0 (20.3)1.10.05 (0.5)
P70T65t3564.168.0 (95.3)6.6 (28.4)4.6 (64.0)13.0 (35.7)1.3 (2.5)10.1 (59.5)1.5 (29.9)1.50.08 (0.7)
P70T80t3555.567.3 (81.7)4.9 (18.3)4.2 (50.5)6.7 (15.8)1.8 (3.6)11.6 (68.3)2.0 (38.7)1.50.19 (1.7)
P70T80t2058.963.0 (81.1)6.5 (24.5)4.3 (53.8)8.8 (22.1)1.5 (3.0)11.0 (65.0)1.8 (35.2)1.60.13 (1.2)
P75T65t0567.156.2 (82.4)6.5 (29.3)4.1 (60.0)15.0 (42.9)1.2 (2.4)10.1 (59.7)1.5 (29.3)1.50.07 (0.6)
P75T65t2060.771.8 (95.4)5.8 (23.8)4.9 (63.7)10.8 (28.0)1.4 (2.7)10.8 (64.0)1.7 (32.4)1.50.10 (0.9)
P75T65t3559.071.7 (94.5)6.0 (23.9)4.0 (51.3)8.9 (22.3)1.3 (2.6)10.3 (60.8)1.7 (32.4)1.40.10 (0.9)
P75T65t6057.074.7 (93.1)5.0 (19.2)4.3 (52.8)7.4 (17.9)1.7 (3.2)10.7 (63.4)1.8 (34.6)1.50.14 (1.2)
P75T80t2055.072.4 (87.1)5.2 (19.1)4.4 (52.7)6.1 (14.4)1.8 (3.6)10.9 (64.2)2.0 (39.7)1.50.19 (1.7)
P80T80t2051.972.3 (81.9)3.7 (13.0)3.7 (41.8)4.2 (9.2)2.3 (4.6)9.9 (58.4)2.2 (43.9)1.40.33 (3.1)
P80T80t3550.875.0 (83.4)3.6 (12.3)2.9 (31.7)4.8 (10.4)
P80T80t6057.668.2 (85.9)3.2 (12.4)2.4 (30.0)8.3 (20.3)

*Expressed as a percentage of total lignin content (G + S + S′ ) in each sample spectrum.