Nutritional composition and biological activities of 17 Chinese adzuki bean (Vigna angularis) varieties

Abstract

Seventeen Chinese adzuki (Vignaumbellata.) bean varieties were collected and milled. The nutritional compositions including starch, fat, protein and phytochemicals were analyzed. Results obtained showed that these adzuki beans have a high content of resistant starch which accounts for about 23.57% of total starch, and have suitable amino acid constitutions. Palmitic acid (27.68%), linoleic acid (33.11%) and linolenic acid (26.61%) were the dominant fatty acids. Besides, four bound phenolic acid and two free phenolic acids were identified by HPLC. The antioxidant activity of 70% ethanol extracts and α-glucosidase inhibition activity of water extracts were evaluated. All the adzuki beans possessed strong ABTS .+ free-radical-scavenging capacity and α-glucosidase inhibition activity. Significant positive correlations (P < .01) of the antioxidant activity with total phenolic acids, total flavonoids and free caffeic acid contents were observed. These results are anticipated to providing useful information on the development of adzuki bean-based functional food.

Detection of lunasin in quinoa (Chenopodium quinoa Willd.) and the in vitro evaluation of its antioxidant and anti‐inflammatory activities

“…For the DPPH assay and ABTS + assay, QLP was dissolved in distilled water to final concentrations of 3.20, 1.60, 0.80, 0.40 and 0.20 g L −1 , and distilled water was used as the control. Results were calculated according to reported equations . For the oxygen radical absorbance capacity (ORAC) assay, QLP was dissolved in 50% methanol to final concentrations of 3.20, 1.60, 0.80, 0.40 and 0.20 g L −1 , and a Trolox standard was used as the control.…”

“…Results were calculated according to reported equations. 18,19 For the oxygen radical absorbance capacity (ORAC) assay, QLP was dissolved in 50% methanol to final concentrations of 3.20, 1.60, 0.80, 0.40 and 0.20 g L −1 , and a Trolox standard was used as the control. ORAC values were expressed as the mean molar concentration (μmol L −1 ) of Trolox equivalents (TE) per gram of QLP 20 .…”

Chemical composition, antioxidant, and antiproliferative activities of nine Chinese proso millet varieties

“…Extracts for the determination of antioxidant compounds, antioxidant activities, and antiproliferation activity were prepared according to the method of Shi, Yao, Zhu, and Ren (2017) and some modifications were made. In brief, two grams of proso millet flours were mixed with 20 mL of 70% methanol in a 50-mL centrifuge tube.…”

Antioxidant and anti-cancer activities of proanthocyanidins-rich extracts from three varieties of sorghum (Sorghum bicolor) bran

“…The DPPH radical-scavenging activity was determined according to a previous method with some modifications (Shi, Yao, Zhu, & Ren, 2016). DPPH (200 μM) was dissolved in 80% methanol.…”