湖北农业科学2025，Vol.64Issue(11)：86-95,10.DOI:10.14088/j.cnki.issn0439-8114.2025.11.011
莲生物碱抗氧化降脂活性及其对植物病原菌的抑菌性能
Investigation of the antioxidant and lipid-lowering activities of lotus alkaloids and their antibacterial properties against plant pathogens
摘要
Abstract
A systematic comparative study was conducted to investigate the compositional differences of alkaloids in lotus leaves and lo-tus plumules,along with their respective antioxidant,lipid-lowering,and antibacterial properties.The analysis revealed a distinct compositional profile:Alkaloids in lotus leaves were predominantly of the aporphine-type,with nuciferine(lotus leaf alkaloid)being the most abundant,while bisbenzylisoquinoline alkaloids were predominant in lotus plumules,with neferine(methyl lotus plumule al-kaloid)having the highest content.Functionally,the total alkaloids from lotus leaves exhibited superior antioxidant and lipid-lowering activities,demonstrating stronger DPPH radical scavenging capacity and pancreatic lipase inhibition both in a concentration-depen-dent manner compared to the total alkaloids from plumule.In antibacterial assays,the leaf alkaloids also showed more potent and sus-tained efficacy against Pseudomonas syringae pv.tomato,DC3000 and Alternaria nelumbii.Stability assessments,however,indicated that the antibacterial activity of the leaf alkaloids was susceptible to high temperatures,in contrast to the higher thermal stability ob-served for the plumule alkaloids.Furthermore,the presence of metal ions(Ca2+and Mg2+)significantly suppressed the antibacterial ac-tivity of both alkaloid types,with a more pronounced inhibitory effect on the alkaloids derived from lotus plumules.关键词
莲(Nelumbo nucifera)/生物碱/抗氧化/降脂/抑菌Key words
lotus(Nelumbo nucifera)/alkaloids/antioxidant/lipid-lowering/antimicrobial分类
农业科技引用本文复制引用
汪闻皓,曾钰婷,杨子健,李静..莲生物碱抗氧化降脂活性及其对植物病原菌的抑菌性能[J].湖北农业科学,2025,64(11):86-95,10.基金项目
山东省自然科学基金项目(ZR2021MC163) （ZR2021MC163）
