名词 pigment:

1. dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)

2. any substance whose presence in plant or animal tissues produces a characteristic color

3. a substance used as a coating to protect or decorate a surface (especially a mixture of pigment suspended in a liquid); dries to form a hard coating

动词 pigment:

1. acquire pigment; become colored or imbued

2. color or dye with a pigment

pigmentn.色素； 颜料v.把 ... 加颜色； 变色pigmentosus[医] 色素的, 着色的pigment cell色素细胞pigment band色素带pigment body色素体pigment lake色淀颜料pigment seam[医] 色素缝pigment spot眼点pigment zone色素带pigment gene色素基因pigmentationn.染色；着色；色素沉淀

1. Conclusion The black rice pigment is more stable than amaranth and grape pigments.
   结论黑米天然色素的光稳定性优于苋菜红和葡萄红天然色素。