Xanthin in corn starch residue is a mixture of fat soluble and water soluble pigments, which are blood red in colour in the pure extraction and lemon yellow in its diluted solution.

利用生产葡萄糖工艺中淀粉渣提取黄色,主要一种脂溶性色和少量极性较大色,呈血红色,其稀释液呈柠檬黄色。