Yield, composition and biological activities of Eugenia uniflora L. essential oil according to seasonality

IF 2.2 3区农林科学 Q3 CHEMISTRY, APPLIED Journal of Essential Oil Research Pub Date : 2023-03-30 DOI:10.1080/10412905.2023.2192210

Roger Raupp Cipriano, Maria Cristina Teixeira Duarte, Maíra Maciel Tomazzoli, Beatriz Helena Noronha de Sales Maia, C. Deschamps

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Abstract

ABSTRACT The aim of this study was to verify the seasonal influence on the Eugenia uniflora essential oils. The collections were carried out in October 2017 and March, May and August 2018. The extraction of the essential oils was performed by hydrodistillation and their composition was determined by gas chromatography. The yield of the essential oils was lower in winter (1.04% m/m). The composition of the essential oils in the different seasons did not change in relation to their compounds, differing only in their amounts. Germacrone was identified as the main compound, having a higher percentage in spring (48.05%) and summer (45.00%). Antioxidant activity (DPPH) may have been influenced by the higher percentages of germacrone, with better inhibitory concentration values (IC50) in summer (0.62 mg/mL), followed by spring (0.98 mg/mL). The E. uniflora essential oils tested have moderate to weak antibacterial activity and were more efficient against Escherichia coli.

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单叶Eugenia L.精油产量、成分及生物活性随季节变化的研究

摘要本研究的目的是验证季节对独叶Eugenia精油的影响。收集于2017年10月和2018年3月、5月和8月进行。采用水蒸气蒸馏法提取挥发油，气相色谱法测定挥发油成分。冬季精油得率较低，为1.04% m/m。不同季节的精油的成分与它们的化合物没有关系，不同的只是它们的量。主要化合物为麦香酮，春季和夏季的麦香酮含量较高，分别为48.05%和45.00%。抗氧化活性(DPPH)可能受较高的德国马克酮含量的影响，抑制浓度值(IC50)在夏季较好(0.62 mg/mL)，其次是春季(0.98 mg/mL)。所测试的单叶精油具有中等至弱的抗菌活性，对大肠杆菌更有效。

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来源期刊

Journal of Essential Oil Research 工程技术-食品科技

CiteScore

6.00

自引率

3.30%

发文量

审稿时长

18-36 weeks

期刊介绍： Journal of Essential Oil Research ( JEOR) is the major forum for the publication of essential oil research and analysis. Each issue includes studies performed on the chemical composition of some of the 20,000 aromatic plants known in the plant kingdom. JEOR is devoted entirely to all phases of research from every corner of the world by the experts in their field. JEOR''s main areas of focus include: -Analytical chemistry- Biological activity- Biotechnology- Chemical composition- Chemical synthesis- Chemosystematics- Microbiological activity- Plant biochemistry/biosynthesis- Toxicology. Published six times per year, JEOR provides articles on the aromatic principles of a plant or its isolates and are directed toward furthering our readers'' knowledge of the aromatic plant and animal kingdoms.