A powdered natural red food pigment was extracted and refined from phaseolus angularis Wight.

从赤豆中提制出一种粉状天然食用红色素,命名为“赤豆红色素”.

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The natural red radish pigment is a kind of anthocyanin compound and it is not stable.

天然胭脂萝卜红色素属于花青素类化合物,性质不稳定.

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There are natural red soil, rocky soil, coastal sand, swamp soil salinization, and so on.

自然土壤有赤红壤 、 石质土 、 滨海沙土 、 盐渍沼泽土等.

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