This paper repoets the extraction of the pigment from purple wild cabbage. We also study the stability of the pigment at different acidity, temperature and sunlight conditions.
研究了从紫甘蓝中提取花青素类天然食用色素，并对甘蓝色素在不同酸度、 温度等条件下的稳定性进行了探讨。
The dyeing properties of natural dyestuffs extracted from green tea, purple Perilla, wild cabbage are studied.
以稀土为媒染剂，研究了绿茶、紫苏、甘蓝等天然染料对棉织物的染色工艺。
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