Cones are divided into dusnesne, Green pigment and sensible blue pigment.

锥状细胞不合感赤色素、感赤色素和感蓝色素不一栽.

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A blue pigment made from powdered lazuli.

由粉末状天青石制成的蓝色颜料.

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A blue pigment made from powdered lapis lazuli.

深蓝青由粉末状天青石制成的蓝色颜料.

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The key points for extraction of natural edible purpurin and blue pigment are described.

本文详述了天然食用紫色素和蓝色素的提取技术和操作要点.

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