Sarker Umakanta, Oba Shinya, Alsanie Walaa F, Gaber Ahmed
Department of Genetics and Plant Breeding, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.
Laboratory of Field Science, Faculty of Applied Biological Sciences, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan.
Antioxidants (Basel). 2022 May 30;11(6):1089. doi: 10.3390/antiox11061089.
Slim amaranth having a C photosynthetic pathway with diverse variability is a climate-resilient crop that tolerates abiotic stresses. Owing to the high productivity of the C pathway, we have been searching for suitable accessions as preferable high-yielding antioxidant-enriched cultivars with ample bioactive compounds, or for future breeding programs to improve bioactive compounds as a source of natural antioxidants. Twelve slim amaranth accessions were tested for nutraceuticals, phytopigments, radical scavenging capacity (two different assays), vitamins, total flavonoids, and total polyphenols content. Slim amaranth leaves contained ample dietary fiber, protein, moisture, and carbohydrates. The current investigation demonstrated that there was remarkable K, Ca, Mg (8.86, 26.12, and 29.31), Fe, Mn, Cu, Zn, (1192.22, 275.42, 26.13, and 1069.93), TP, TF (201.36 and 135.70), pigments, such as chlorophyll , , and , (26.28, 38.02, and 11.72), betalains, betaxanthins, betacyanins (78.90, 39.36, 39.53,), vitamin C (1293.65), β-carotene, total carotenoids, (1242.25, 1641.07), and TA (DPPH, ABTS) (27.58, 50.55) in slim amaranth leaves. The widespread variations were observed across the studied accessions. The slim amaranth accessions, AH11, AH10, and AH12, exhibited high profiles of antioxidants including high potentiality to quench radicals and can be selected as preferable high-yielding antioxidant-enriched cultivars with ample bioactive compounds. Phytopigments, flavonoids, vitamins, and phenolics of slim amaranth leaves showed intense activity of antioxidants. Slim amaranth could be a potential source of proximate phenolics, minerals, phytopigments, vitamins, and flavonoids for gaining adequate nutraceuticals, bioactive components, and potent antioxidants. Moderate yielding accessions having moderate phytochemicals can be used to develop new high-yielding antioxidant-enriched cultivars for future breeding programs to improve bioactive compounds as a source of natural antioxidants.
细茎苋具有C光合途径，具有多种变异性，是一种耐气候作物，能耐受非生物胁迫。由于C途径的高生产力，我们一直在寻找合适的种质，以培育出富含抗氧化剂、具有丰富生物活性化合物的高产优良品种，或用于未来的育种计划，以提高生物活性化合物作为天然抗氧化剂的来源。对12份细茎苋种质进行了营养成分、植物色素、自由基清除能力（两种不同检测方法）、维生素、总黄酮和总多酚含量的检测。细茎苋叶片含有丰富的膳食纤维、蛋白质、水分和碳水化合物。目前的研究表明，细茎苋叶片中含有大量的钾、钙、镁（8.86、26.12和29.31）、铁、锰、铜、锌（1192.22、275.42、26.13和1069.93）、总磷、总黄酮（201.36和135.70）、色素，如叶绿素a、b和c（26.28、38.02和11.72）、甜菜色素、甜菜黄质、甜菜青素（78.90、39.36、39.53）、维生素C（1293.65）、β-胡萝卜素、总类胡萝卜素（1242.25、1641.07），以及总抗氧化能力（DPPH、ABTS）（27.58、50.55）。在所研究的种质中观察到广泛的变异。细茎苋种质AH11、AH10和AH12表现出较高的抗氧化剂含量，包括具有较高的自由基淬灭潜力，可被选为富含抗氧化剂、具有丰富生物活性化合物的高产优良品种。细茎苋叶片中的植物色素、黄酮类化合物、维生素和酚类物质表现出较强的抗氧化活性。细茎苋可能是获得足够营养成分、生物活性成分和强效抗氧化剂的酚类、矿物质、植物色素、维生素和黄酮类化合物的潜在来源。具有中等植物化学物质含量的中等产量种质可用于开发新的富含抗氧化剂的高产优良品种，用于未来的育种计划，以提高生物活性化合物作为天然抗氧化剂的来源。
