Programa de Pós-Graduação em Agronomia/Produção Vegetal, Universidade Federal do Paraná, Setor de Ciências Agrárias, Departamento de Fitotecnia e Fitossanitarismo, Rua dos Funcionários, 1540, Juvevê, 80035-050 Curitiba, PR, Brazil.
Programa de Pós-Graduação em Química, Universidade Federal do Paraná, Setor de Ciências Exatas, Departamento de Química, Centro Politécnico, Av. Cel. Francisco H. Santos, 100, Jardim das Américas, 81531-980 Curitiba, PR, Brazil.
An Acad Bras Cienc. 2021 Apr 23;93(1):e20181299. doi: 10.1590/0001-3765202120181299. eCollection 2021.
Eugenia uniflora, known as the "Brazilian cherry", is an economically important neotropical Myrtaceae in the cosmetics and pharmaceutical industries due the production of essential oils with antioxidant activity. On account of its significant genetic variability, genotype evaluations are needed in order to identify genetic features related to the essential oil production that meet the industry requirements. The main objective of the present study was to evaluate the yield, composition, and antioxidant activity of essential oils isolated from the leaves of 36 genotypes of E. uniflora. Essential oil samples were obtained by hydrodistillation, and their composition was determined by gas chromatography coupled with mass spectrometry. A variation of 0.22% to 1.68% in the essential oil yield was observed, in which 78 compounds, namely oxygenated sesquiterpenes, were identified. According to the cluster analysis of the major compounds, six groups were revealed. The observed diversity demonstrates the genetic variability of the species. Also, the antioxidant activity was affected by the composition of the essential oils, ranging from 176.66 to 867.57 µM TEAC.
巴西红木，俗称“巴西樱桃”，是桃金娘科中一种具有经济价值的重要新热带植物，在化妆品和制药行业，因其能生产具有抗氧化活性的精油而被广泛应用。鉴于其具有显著的遗传变异性，需要对基因型进行评估，以确定与满足行业要求的精油生产相关的遗传特征。本研究的主要目的是评估 36 种巴西红木叶精油的产率、组成和抗氧化活性。通过水蒸馏法获得精油样品，并通过气相色谱-质谱联用技术确定其组成。精油产率的变化范围为 0.22%至 1.68%，其中鉴定出 78 种化合物，即含氧倍半萜。根据主要化合物的聚类分析，揭示了 6 个组。观察到的多样性表明了该物种的遗传变异性。此外，抗氧化活性受到精油组成的影响，范围从 176.66 到 867.57µM TEAC。
