ABSTRACT

Paeonia lactiflora is an important ornamental and medicinal plant, but after the flowering period, the above-ground parts of ornamental cultivars are often discarded as waste. When considering the development of medicinal plant resources, attention should be paid to the comprehensive development and utilisation of the plant. In this study, 13 ornamental herbaceous peony cultivars were selected, and their stems and leaves were analysed for antioxidant and antibacterial activities. The results showed that total phenolic content (TPC), total flavonoid content (TFC), antioxidant activity and antibacterial activity varied depending on the cultivar and plant organ. In the same cultivar, the TPC and TFC of leaves were higher than those of the stems. The antioxidant activity was significantly correlated with TPC of stems and leaves. In the antibacterial assay, the extracts of stem and leaves of the cultivars ‘Hong Yan Fei Shuang’ and ‘Chun Xiao’ were the most effective against most of the tested strains. This is an innovative study that shows the great potential of ornamental herbaceous peony stems and leaves as sources of biologically active compounds.

摘要

芍药是一种重要的观赏和药用植物，但在开花期过后，观赏品种的地上部分往往被当作废物丢弃。在考虑开发药用植物资源时，应注意植物的综合开发利用。在这项研究中，选择了 13 个观赏草本牡丹品种，对其茎和叶的抗氧化和抗菌活性进行了分析。结果表明，总酚含量（TPC）、总黄酮含量（TFC）、抗氧化活性和抗菌活性因品种和植物器官而异。同一品种叶片的TPC和TFC均高于茎。抗氧化活性与茎叶TPC显着相关。在抗菌检测中，以'红燕飞霜'和'春晓'的茎叶提取物对大多数受试菌株最有效。这是一项创新研究，显示了观赏牡丹茎叶作为生物活性化合物来源的巨大潜力。