Tartary Buckwheat (<i>Fagopyrum tataricum</i> Gaertn.) as a Source of Dietary Rutin and Quercitrin

TLDR

Rutin and quercetin content in seeds depends on variety and growing conditions. The study aimed to evaluate tartary buckwheat as a source of rutin, quercetin, and quercitrin by analyzing samples from China and Luxembourg using HPLC. The authors analyzed two Chinese and one Luxembourgian tartary buckwheat samples by HPLC to quantify rutin, quercetin, and quercitrin. Tartary buckwheat herb contained up to 3 % DW rutin, 0.01–0.05 % DW quercitrin, and only trace quercetin, while its seeds had 0.8–1.7 % DW rutin (vs 0.01 % in common buckwheat) and traces of quercitrin and quercetin absent in common buckwheat. Keywords: tartary buckwheat, antioxidants, flavonoids, rutin, quercetin, quercitrin.

Abstract

Two samples of tartary buckwheat (Fagopyrum tataricum Gaertn.) from China and one from Luxembourg were studied by high-performance liquid chromatography (HPLC) to reveal the possibilities of growing tartary buckwheat herb as a possible source of rutin, quercetin, and quercitrin. The content of rutin was determined as up to 3% dry weight (DW) in tartary buckwheat herb. Quercitrin values were in the range of 0.01−0.05% DW. Only traces of quercetin were detected in just some of the samples. Tartary buckwheat seeds contained more rutin (about 0.8−1.7% DW) than common buckwheat seeds (0.01% DW). Rutin and quercetin content in seeds depends on variety and growing conditions. Tartary buckwheat seeds contained traces of quercitrin and quercetin, which were not found in common buckwheat seeds. Keywords: Tartary buckwheat; antioxidants; flavonoids; rutin; quercetin; quercitrin