开花期植物荞麦(Fagopyrum esculentum)经层析法提取、分离得到红色荧光的纯净提取物。提取物在ng/ml浓度范围内对光激活条件下蛋白激酶(蛋白酪氨酸激酶、丝氨酸-苏氨酸激酶)有抑制作用。与金丝桃素和calphostin C相比,荞麦提取物对各种蛋白激酶的抑制作用更为敏感。在非感光的条件下,荞麦提取物也能有效地抑制丝氨酸-苏氨酸激酶和蛋白激酶C的活性。 Fagopyrum esculentum, an anthesis at the flowering stage, was extracted and separated by chromatography to obtain a pure red fluorescent extract. The extract inhibits protein kinase (protein tyrosine kinase, serine-threonine kinase) under light-activated conditions in the ng/ml concentration range. Compared with hypericin and calphostin C, buckwheat extract is more sensitive to the inhibition of various protein kinases. Under non-photosensitive conditions, buckwheat extract can also effectively inhibit the activity of serine-threonine kinase and protein kinase C.