Content Comparison of Three Kinds of Flavonoids in Powders of Tartary Buckwheat of Different Parts.

The contents of rutin, quercetin and kaempferol in powders of tartary buckwheat of different parts were determined by high-performance liquid chromatography (HPLC). The results showed that the contents of the three kinds of flavonoids difered greatly in the powders of tartary buckwheat of diferent parts. The contents of rutin and quercetin in the powder of tartary buckwheat sprouts were significantly higher than those in the powders of tartary buckwheat leaves and seeds. The content of kaempferol was highest in the powder of tartary buckwheat seeds. It indicates that high-performance liquid chromatography can be used for quality control of tartary buckwheat powder for its time saving, cost saving and accurate and reliable results. The content of rutin in the powder of tartary buckwheat sprouts was highest, suggesting that it is more suitable for the development of various foods based on tartary buckwheat powder. [ABSTRACT FROM AUTHOR]