Extraction and determination of bioactive compounds and antioxidant activity of buckwheat seed milling fractions

Abstract

Buckwheat is a precious source of various bioactive compounds like phenolics, flavonoids, rutin, and quercetin, etc. This research work was performed to harvest the nutraceutical potential of indigenous buckwheat varieties and their milling fractions (fine flour, coarse flour, bran flour, and husk). Common buckwheat (CBW) and Tartary buckwheat (TBW) were analyzed in terms of total phenolic content (TPC), total flavonoid content (TFC), and DPPH scavenging activity. When compared to common buckwheat, Tartary buckwheat had a higher total phenolic content (2101.421 mg GAE/100 g), total flavonoid content (1233.990 mg QEQ/100 g), and DPPH scavenging activity (44.51%).In the same context, throughout comparisons among milling fractions, the highest TPC and TFC were observed in the husk part of Tartary buckwheat while the lowest was found in common buckwheat. During the comparison of different solvents and their concentrations, it was observed that Ethanol 70% extracted a greater quantity of phytochemicals as compared to the rest of the other solvents and concentrations. This study recognized variability among buckwheat varieties and milling fractions for nutraceutical potential and nutritional qualities that can be used in the treatment of different maladies and food products.K eywords: buckwheat; milling fractions; extraction; solvents; bioactive compounds. Practical applications:As the findings demonstrated that buckwheat extract possess important bioactive compounds and antioxidants that may be very useful in the nutraceutical and pharmaceutical industries for the treatment of different types of maladies. Moreover, buckwheat plays a very important role in the maintenance of different nutritional disorders because it contains several important nutrients as well as functional ingredients.

Penicillium fermentation combined with enzyme treatment to enhance the release of phenolic acids from wheat bran

“…However, insoluble-bound phenols are usually combined with plant cell wall polysaccharides in the form of ester bonds or covalent bonds, so it is not easy to extract them by traditional methods, resulting in the difficulty of effective utilization of these highly active substances (Wang et al, 2022b). In recent years, more and more studies have shown that the content and antioxidant activity of insoluble-bound phenols in wheat bran are higher than those of soluble polyphenols (Mazahir et al, 2022). Through the analysis of high performance liquid chromatography, most phenols were bound to wheat bran in insoluble form, and their antioxidant activity and content were higher than those in free form (Zhang et al, 2018b).…”

Experimental Research on Three-Level Vibrating Screening of Buckwheat Based on Discrete Element Method

“…As one of pseudocereals, buckwheat has abundant nutritional value and powerful medicinal value, and it is an ideal raw material of functional food (Mazahir et al, 2022;Ahmed et al, 2022;Cao et al, 2022). In recent years, rational diet and balanced nutrition have received more and more attention, and buckwheat food has appeared in people's lives in the forms of staple food, convenience food, leisure food, etc., a demand that is gradually increasing (Ren et al, 2018;Ren et al, 2022).…”

Effect of air drying temperature on the phenolics and antioxidant activity of Xuan-Mugua fruit

“…Phenolics are typical phytochemicals that are widely distributed in the different parts of plants such as roots (Wang et al, 2022), stems, leaves (Mazahir et al, 2022), fruits and seeds, showing dominant antioxidant (Mitrović et al, 2021), anti-wrinkling (Byun et al, 2021) and antidiabetic activity (Shafay et al, 2021). According to their structural characteristics, phenolic phytochemicals are generally divided into two main groups such as phenolic acids and flavonoids (Vargas-Madriz et al, 2021).…”