Journal of Chemistry / 2019 / Article / Tab 4

Research Article

Bulk and Surface Chemical Composition of Wheat Flour Particles of Different Sizes

Table 4

The functional group content of C, O, N, P, and S on the surface chemical composition of flour particles of different sizes (%).

Binding energy (eV)ElementFunctional group#1#2#3#4#5#6#7#8SD

285.2C1s71.5073.2572.5872.9774.1471.7772.1771.800.89
284.6Peak 1C-C, C-H49.5549.3749.3147.4846.7046.7747.4649.261.25
286.5Peak 2C-O, C-N, O-C-O, O=C-O, O=C-N19.2320.9321.4823.8227.9825.423.4920.692.87
287.9Peak 3O=C-OH, O=C-OR3.363.243.093.072.953.173.583.900.31
532.3O1s22.6321.3121.2721.1720.0822.0321.6322.060.77
531.4Peak 1O=C-OH, O=C-N, O=C-O6.626.296.595.804.915.786.066.070.55
532.6Peak 2C-OH, C-O-C8.778.388.398.396.827.657.597.990.62
533.3Peak 3O=C-OH6.235.655.556.115.125.405.755.570.36
399.9N1s5.364.895.535.205.105.475.455.390.22
399.8Peak 1O=C-NH, O=C-NH22.632.522.342.242.432.732.782.990.25
401.9Peak 2C-NH3+2.972.942.452.272.202.222.512.680.31
133.3P2p0.220.270.310.350.370.370.420.380.07
133.10.260.320.400.450.430.450.430.440.07
164.0S2p0.290.300.320.310.320.360.340.370.03
163.60.350.360.400.390.360.430.350.430.03

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