Analysis of Grain Characteristics in Korean Wheat and Screening Wheat for Quality Using Near Infrared Reflectance Spectroscopy
2016
Kim, K.H., NICS, RDA, Miryang, Republic of Korea | Kang, C.S., National Institute of Crop Science, RDA, WanJu, Republic of Korea | Choi, I.D., NICS, RDA, Suwon, Republic of Korea | Kim, H.S., National Institute of Crop Science, RDA, WanJu, Republic of Korea | Hyun, J.N., NICS, RDA, Miryang, Republic of Korea | Park, C.S., Chonbuk National University, Jeonju, Republic of Korea
Near infrared reflectance spectroscopy (NIRS) has been used as a rapid analysis tool to many components in cereal grains. This study was to investigate the potential NIRS application for determination of components in Korean wheat. Main components of wheat quality are protein content, moisture content, SDS-sedimentation volume and ash content. Wheat has screened for quality, hardness of seed by NIRS in CIMMYT (International Maize and Wheat Improvement Center). NIRS calibration was used as a rapid and simultaneous analysis method to determine the wheat quality components. A total of 282 wheat samples, collected from a wide range of Korean wheat cultivation region for 2 years, were analyzed by NIRS. NIRS calibration of individual components were developed using first derivation, second derivation and modified partial least-squares regression and internal cross validation method. As a result, calibration formula of protein was y=0.937x+0.786, calibration formula of moisture was y=0.922x+0.911, calibration formula of ash was y=0.933x+0.08, calibration formula of SDS-sedimentation volume was y=0.947x+2.150. NIRS calibration for wheat quality may be useful for determining protein(R² = 93.6), moisture(R² = 91.6), SDS-sedimentation volume(R² = 94.3), and ash(R² = 93.4). This study shows that 4 calibrations of NIRS is a useful application in the accurate and rapid determination of wheat quality. Therefore, NIRS could be used to rapidly determine the quality contents of wheat for grade evaluation in a purchasing of wheat cultivation region.
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