Rutin and quercetin content of common and Tartary flour extracts was determined by reversed phase-high performance liquid chromatography; and antigenotoxic effect of flour extracts, rutin and quercetin was evaluated using the comet assay. Rutin and quercetin decreased the extent of t-BOOH induced DNA damage for 51% and 67%, respectively. Common and Tartary buckwheat flour extracts showed high antioxidant capacity and prominent genoprotective ability. The obtained results show high antigenotoxic activity of buckwheat and furthermore, they suggest that complex nutrient and flavonoid rich food products are more efficient in their health promoting effects compared to a single active substance.
COBISS.SI-ID: 2922575
Se was effectively assimilated by Tartary buckwheat plants and taken into the seeds, where its concentration was more than double that in untreated plants. The seeds were collected and sown to obtain the progeny of these Se-treated plants. To assess the physiological characteristics of control plants and these Se-treated progeny plants, the estimated respiratory potential via electron transport system (ETS) activity and the photochemical efficiency of photosystem II were measured. Three weeks after germination, the Se-treated progeny plants showed higher ETS activity compared to the controls.
COBISS.SI-ID: 2702927
We monitored in volunteers eating common and Tartary buckwheat (TBW) ocular, nasal, and throat symptoms, headache, fatigue, and nausea using symptom scales. Both types of cookies had positive effects on symptoms compared with the baseline. TBW initially reduced fatigue symptoms (p ( 0.05), although it increased ocular symptoms (p ( 0.05). Buckwheat consumption generally reduced the symptoms analyzed in this study. A daily consumption of 359.7 mg rutin-equivalents/ day in the form of TBW cookies reduced fatigue in healthy subjects and it did not increase the levels of symptoms.
COBISS.SI-ID: 7159161
The elemental localization of cross-sectioned grains can be quantitatively analyzed by micro - proton induced X-ray emission (micro-PIXE). We present a micro-PIXE study on buckwheat grain, with a detailed description of the elemental distributions. Elements such as Mg, P, S, K, Fe, Ni, Cu, and Zn were preferentially localized in the cotyledons and embryonic axis; however, significant amounts of K and Fe were also found in the pericarp. The aleurone layer covering the cotyledons was especially enriched in S and P, while testa, a thin layer above the aleurone did not show any significant element enrichments. On the basis of the data obtained, milling techniques can be adapted to obtain milling fractions of common buckwheat, and further developed for Tartary buckwheat, with targeted nutritional values.
COBISS.SI-ID: 6591097
The aim of this study was to determine the phototoxic substance fagopyrin; and rutin, and quercetin contents of plant samples taken from 3 buckwheat species, namely common (Fagopyrum esculentum), Tartary (F. tataricum), and cymosum buckwheat (F. cymosum). Common buckwheat leaves contained high levels of fagopyrin (322–2300 mg/g) while even higher levels were found in other samples such as the flowers (4830 mg/g). The highest fagopyrin content (20,700 mg/g) was found in the flowers of F. cymosum. Two cymosum samples had a high proportion of fagopyrin relative to rutin (200 mg fagopyrin/ mg rutin), whereas this proportion was lower (15–90 mg fagopyrin/mg rutin) in other samples. It was a low level of fagopyrin in tartary buckwheat seeds and leaves.
COBISS.SI-ID: 7794297