. 2013 Aug 22;61(38):9004–9014. doi: 10.1021/jf4019596

Table 3. Amounts of Major N-Heterocyclic Compounds (mg/g of Educt) in the Ethyl Acetate Extracts of the Crude Products Obtained at Different Ammoxidation Temperature (0.2 MPa O₂, 3 h).

70 °C	100 °C	140 °C	N-heterocyclic compound	70 °C	100 °C	140 °C
Glucose				Cellulose
0	0	0	2-methyl-1H-imidazole	0	0	0.16
1.2	11.9	0	1H-imidazole	0.011	0.013	4.60
0.5	7.5	9.7	3-hydroxypyridine	0.011	0.004	0.10
7.6	76.7	35.3	4-methyl-1H-imidazole	0	0	0.59
6.1	67.4	65.0	pyrazines^a	0.008	0.006	0.07
Xylose				Xylan
not determined	0	0	2-methyl-1H-imidazole	0	0	0.33
	33.2	1.9	1H-imidazole	0	0.150	12.10
	7.5	13.1	3-hydroxypyridine	0.004	0.132	0.95
	63.6	28.5	4-methyl-1H-imidazole	0	0	1.81
	18.1	24.8	pyrazines^a	0.012	0.046	0.82

Pyrazines: Sum of all found pyrazine derivatives.

Table 3. Amounts of Major N-Heterocyclic Compounds (mg/g of Educt) in the Ethyl Acetate Extracts of the Crude Products Obtained at Different Ammoxidation Temperature (0.2 MPa O2, 3 h).