Table 1 Extraction of important bands of winter wheat kernel protein-based SPA method
From: Analyzing protein concentration from intact wheat caryopsis using hyperspectral reflectance
Spectrum types | Pretreatment methods | Number of variables | Characteristics of the band (nm) |
|---|---|---|---|
Wavelengths for grain samples | R | 6 | 377, 358, 508, 352, 399, 1332 |
FD | 8 | 421, 420, 429, 418, 414, 415, 409, 422 | |
SD | 4 | 426, 425, 407, 424 | |
SG | 4 | 1949, 851, 350, 376 | |
SNV | 18 | 1411, 1052, 1476, 1154, 2305, 1104, 1932, 1994, 2500, 963, 986, 487, 407, 906, 672, 1077, 739, 2077 | |
MSC | 16 | 706, 1327, 943, 1993, 1932, 1144, 672, 2070, 2305, 1001, 351, 399, 1443, 547, 487, 1101 | |
Wavelengths for powder sample | R | 4 | 2025, 589, 1361, 355 |
FD | 4 | 402, 407, 412, 415 | |
SD | 4 | 403, 404, 405, 407 | |
SG | 4 | 576, 2033, 355, 1361 | |
SNV | 10 | 1925, 2005, 1901, 2113, 1097, 1320, 581, 1177, 350, 1466 | |
MSC | 16 | 2398, 2350, 1799, 2136, 1169, 1458, 403, 590, 352, 2012, 2056, 1315, 484, 2246, 2187, 354 |