NIR Analysis of Rice Bran Depending on Different Percentages of Rice Polishing

抄録

Generally, in the case of agricultural products, some difficulties, resulting from the broad peak intensity and extensive overlapping of NIR absorption bands derived from complex chemical components that exist in the sample, arise in relation to specific functionalities of those spectra. This study is intended to specify the NIR spectra of rice bran depending on different percentages of rice polishing. Sample sets were prepared by polishing and grinding away 5% increments of the original mass of grains to leave 95%-45% of the kernels in successive sets. These samples showed a stepwise increase or decrease of localized chemical constituents: moisture, protein, carbohydrates, etc. Using this approach on a rice bran sample set, basic vibrational information was elucidated for the assignment of absorption bands of rice bran.