Low concentration of sodium bicarbonate improves the bioactive compound levels and antioxidant and α-glucosidase inhibitory activities of tartary buckwheat sprouts

Changes in α-glucosidase inhibition, antioxidant, and phytochemical profiles during the growth of Tartary buckwheat (Fagopyrum tataricum Gaertn)

“…The α-glucosidase inhibitory activity was not related to the change of rutin content, which indicated that rutin might not contribute to α-glucosidase inhibition. However, the leaf of 5 August (early growth stage) had a significant α-glucosidase inhibition rate as 53.8%, which was consistent with the literature, [12] presumably that D-chiro-inositol plays a role in α-glucosidase inhibitory activity. The results indicated that the Tartary buckwheat root and young seedling had a great potential to alleviate postprandial hyperglycemia.…”

“…The α-glucosidase inhibitory activity of Tartary buckwheat extract samples was measured as described with slight modifications. [12,27,28] The different parts of Tartary buckwheat sample solution (10 μL, from Section 2.2.) throughout the growth stages were lyophilized and dissolved in 1 mL of 100 mM phosphate buffer (pH 6.8) to concentrations of 0.5 mg/mL (dry original raw material).…”

“…[10] The studies reported that three flavonoids, such as quercetin, isoquercetin, and rutin from Tartary buckwheat bran were effective inhibitors against α-glucosidase. [11,12] In addition, Tartary buckwheat could reduce the serum level of total cholesterol and triglyceride, lower the concentration of blood glucose and regulate the lipid profile. [2,13] Previous phytochemical studies on Tartary buckwheat had identified some types of compounds such as quinic acid derivatives, flavan-3-ol derivatives, flavonol derivatives, phenylpropanoid glycosides, nitrogen compounds, [14] and other compounds such as D-chiro-inositol, anthraquinones, fagopyrin, 2ʹʹ-hydroxynicotianamine, and nicotianamine.…”

“…[16] Furthermore, chronic oxidative stress by free radicals can lead to diabetic complications, and thus antioxidants also have an important role for the prevention and treatment of T2D. [17,18] Numerous studies mainly focused on the germination of Tartary buckwheat sprout and accumulation of bioactive components, [19][20][21][22][23][24] antioxidant, [12,21,23] and α-glucosidase inhibitory activities. [12] However, there are few reports about the antioxidant activity, α-glucosidase inhibitory activity, phytochemical profiles, and quantitative analysis in the whole growth stages and various parts (i.e.…”

Microorganisms and Biostimulants Impact on the Antioxidant Activity of Buckwheat (Fagopyrum esculentum Moench) Sprouts

“…On the other hand, the same treatment caused a significant decrease in TP but only a slight decrease in the rutoside content in Kora sprouts ( Figure 1 E,F). Qin et al [ 41 ] observed an increase in rutoside, isoquercetin, and quercetin content in Tartary buckwheat sprouts treated with sodium bicarbonate, until 96 h, while the content of kaempferol was decreasing up to the 36th hour of sprouts growth.…”