Phenylpropanoid content of different varieties of buckwheat leaves and their hot water extracts

The aim of the study was to select variety most suitable for producing buckwheat juice from leaves. We harvested six common varieties (USA, Japan HS4251, Daegwan, Daewon, Daesan, and Yangjul buckwheat) before they entered reproductive growth period. leaves were freeze-dried used extraction. determined phenylpropanoid content using high performance liquid chromatography (HPLC). Daegwan has highest such as chlorogenic acid, caffeic epicatechin, ferulic rutin, quercetin, kaempferol. in is 1,542.9 μg/g which 1.5 times higher than other varieties. So, it selected a Thus, extraction with hot water at 60, 70, 80, 90 100°C 3 h determine optimal temperature. As result, we found out that amount rutin total phenylpropanoids when extracted 60°C. Therefore, development functional extracts content.