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蓝桉（Eucalyptus globulus Labill.）和红胶木（Corymbia ficifolia (F. Muell.) K.D. Hill & L.A.S. Johnson）叶片的抗菌、抗氧化活性及酚类成分分析

Antimicrobial and antioxidant activities and phenolic profile of Eucalyptus globulus Labill. and Corymbia ficifolia (F. Muell.) K.D. Hill & L.A.S. Johnson leaves.

作者信息

Dezsi Ștefan, Bădărău Alexandru Sabin, Bischin Cristina, Vodnar Dan Cristian, Silaghi-Dumitrescu Radu, Gheldiu Ana-Maria, Mocan Andrei, Vlase Laurian

机构信息

Faculty of Geography, Babeș-Bolyai University, 5-7, Clinicilor Street, Cluj-Napoca 400006, Romania.

Faculty of Environmental Sciences and Engineering, Babeș-Bolyai University, 30, Fântânele Street, Cluj-Napoca 400294, Romania.

出版信息

Molecules. 2015 Mar 16;20(3):4720-34. doi: 10.3390/molecules20034720.

DOI:10.3390/molecules20034720
PMID:25786160
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6272638/
Abstract

This study was performed to evaluate the in vitro antimicrobial and antioxidant activities and the phenolic profile of Eucalytus globulus Labill. and Corymbia ficifolia (F. Muell.) K.D. Hill & L.A.S. Johnson leaves. Both leave extracts contain significant amounts of phenolic compounds, mainly flavonoids. Qualitative and quantitative analyses of the phenolic compounds were performed using a HPLC/MS method. The main flavonoid was hyperoside and its highest amount was found in E. globulus (666.42 ± 5.02 μg/g dw plant material). Regarding the flavonol profile, myricetin was the dominant compound and its highest amount was found in C. ficifolia leaves (124.46 ± 0.24 μg/g dw plant material). The antioxidant activity was evaluated by DPPH, TEAC, hemoglobin ascorbate peroxidase activity inhibition (HAPX) and inhibition of lipid peroxidation catalyzed by cytochrome c assays, revealing an important antioxidant potential for both species. In the antimicrobial assays, C. ficifolia extract was found to be more active than E. globulus against both Gram-positive and Gram-negative bacterial strains with the exception of Bacillus subtilis. The results of the present study provide new valuable data regarding the bioactivities of these medicinal species.

摘要

本研究旨在评估蓝桉（Eucalyptus globulus Labill.）和红胶木（Corymbia ficifolia (F. Muell.) K.D. Hill & L.A.S. Johnson）叶片的体外抗菌和抗氧化活性以及酚类成分。两种叶片提取物均含有大量酚类化合物，主要为黄酮类。采用高效液相色谱/质谱法对酚类化合物进行定性和定量分析。主要黄酮类化合物为金丝桃苷，其在蓝桉中的含量最高（666.42 ± 5.02 μg/g干重植物材料）。关于黄酮醇成分，杨梅素是主要化合物，其在红胶木叶片中的含量最高（124.46 ± 0.24 μg/g干重植物材料）。通过DPPH、TEAC、血红蛋白抗坏血酸过氧化物酶活性抑制（HAPX）和细胞色素c催化的脂质过氧化抑制试验评估抗氧化活性，结果表明两种植物均具有重要的抗氧化潜力。在抗菌试验中，除枯草芽孢杆菌外，红胶木提取物对革兰氏阳性和革兰氏阴性细菌菌株的活性均高于蓝桉。本研究结果为这些药用植物的生物活性提供了新的有价值的数据。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e5c/6272638/fef0ea724daf/molecules-20-04720-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e5c/6272638/fef0ea724daf/molecules-20-04720-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e5c/6272638/fef0ea724daf/molecules-20-04720-g001.jpg

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