Fig. 8

Correlation analysis of LIBS, Raman and microscopic hyperspectral data with amylopectin and protein contents in rice varieties. (A) The results of correlation analysis with amylopectin. (B) The results of correlation analysis with protein. The figure employs numerical labels to distinguish sample types (paddy rice(I), brown rice(II), polished rice(III) and rice flour(IV)), and dashed lines to segregate the spectral imaging types (LIBS, Raman, microscopic hyperspectral). The data in the grid represents the proportion of variables within the current correlation interval, relative to the total number of variables analyzed