核桃和黑油桐叶提取物的抗氧化活性及其化感作用筛选

T. Djordjevic, Umiljendić Gajić, M. Sarić-Krsmanović, L. Radivojević, Rada Djurovic-Pejcev, Marija Stevanović, Mara Vukovic
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引用次数: 1

摘要

具有化感活性或植物毒性的次生植物代谢物可能具有重要的生物技术意义,可作为化感物质的来源,从而对农用工业部门作出贡献。本研究的目的是利用所获得的富含酚类化合物的普通核桃(Juglans regia L.)和苦dock (Rumex obtusifolius L.)叶片提取物,即具有较高的抗氧化潜力,并鉴定其对雪雀花(Setaria glauca L.)的植物毒性。测定。和高粱(L.)珀耳斯。体外培养的杂草幼苗。所获得的植物提取物对自由基的清除具有显著的亲和力,普通核桃叶提取物的DPPH IC50值为0.127 mg/ml,苦船坞叶提取物的DPPH IC50值为0.194 mg/ml。提取物的铁还原抗氧化能力也较高,普通核桃叶提取物的FRAP值为384.4 ? 8.1 ?mol Fe2+/g干质量,苦船尾叶提取物的FRAP值为321.6 ? 2.5 ?mol Fe2+/g干质量。在最高使用浓度下,普通核桃叶提取物使青花草的萌发率降低了67.3%,苦船坞叶提取物使青花草的萌发率降低了54.5%。普通核桃叶提取物对山楂芽长抑制80.7%,苦dock叶提取物对山楂根长抑制78.2%,对山楂根长抑制96.4%,对山楂根长抑制93.1%。所获得的普通核桃叶提取物在最高试验浓度下对海螺萌发的抑制率为100%,相同浓度的苦船坞叶提取物对海螺萌发的抑制率为79.2%。用普通核桃叶提取物处理后,茎长减少100%,苦船坞叶提取物处理后,茎长减少93.7%。根长分别减少了100%和99.3%。总的来说,提取物表现出明显的抗氧化活性和显着的化感作用潜力。
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Antioxidant activity of Juglans regia L. And Rumex obtusifolius L. leaf extracts and screening for their allelopathic potential
Secondary plant metabolites with allelopathic activity or phytotoxicity could be biotechnologically important, serving as a source of allelochemicals, and thus contributing to the agro-industrial sector. The objective of this study was to use the obtained common walnut (Juglans regia L.) and bitter dock (Rumex obtusifolius L.) leaves extracts rich in phenolic compounds, i.e. with high antioxidant potential, and to identify their phytotoxicity to Setaria glauca (L.) P. Beauv. and Sorghum halepense (L.) Pers. weed seedlings grown in vitro. The obtained plant extracts had remarkably high affinity for scavenging free radicals, having DPPH IC50 values of 0.127 mg/ml for common walnut leaf extract and 0.194 mg/ml for bitter dock leaf extract. Ferric reducing antioxidant power of the extracts was also high, FRAP value of the common walnut leaf extract was 384.4 ?} 8.1 ?mol Fe2+/g dry mass, and of the bitter dock leaf extract 321.6 ?} 2.5 ?mol Fe2+/g dry mass. At the highest used concentration, common walnut leaf extract reduced germination of S. glauca by 67.3%, while bitter dock leaf extract reduced germination of that weed by 54.5%. Shoot length of S. glauca was inhibited 80.7% when subjected to common walnut leaf extract, and 78.2% under the influence of bitter dock leaf extract, and its root length was inhibited 96.4% and 93.1% respectively. Germination of S. halepense was inhibited 100% under the influence of the obtained common walnut leaf extract at its highest test concentration, and 79.2% when subjected to bitter dock leaf extract at the same concentration. Shoot length of this weed was reduced 100% after treatment with common walnut leaf extract, and 93.7% when subjected to bitter dock leaf extract. Root length was reduced 100% and 99.3%, respectively. Overall, the extracts demonstrated pronounced antioxidant activity and remarkable allelopathic potential.
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