ANTIFUNGAL ACTIVITY OF ESSENTIAL OILS FROM NATIVE TREE SPECIES IN SOUTHERN BRAZIL

Q4 Environmental Science

Floresta Pub Date : 2022-03-31 DOI:10.5380/rf.v52i2.78343

Nadia Helena Bianchini, D. D. da Silva, B. Schindler, M. Muniz, B. Heinzmann

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Abstract

The objective of this exploratory work was to analyze the yield and chemical composition of essential oils (EO) from Blepharocalyx salicifolius [BS] and from two pools of EO obtained from Nectandra megapotamica [NM1 and NM2], as well as to evaluate their antifungal properties against the fungi Pycnoporus sanguineus (white-rot) and Gloeophyllum trabeum (brown-rot). The EO were obtained by hydrodistillation and its components were identified by gas chromatography coupled to mass spectrometry (GC-MS) and quantified with flame ionization detection (GC-FID). For the evaluation of antifungal activity, the mycelial growth index (MGI) and the mycelial growth inhibition (GI) of BS were determined at concentrations of 1, 2 and 5 µL.mL-1, and 0.25; 0.5 and 1 µL.mL-1 for MN1 and NM2. The yield of EOs was 2.29% (BS), 0.14% (NM1) and 0.17% (NM2). The major components of BS EO were eucalyptol (63.44%) and β-caryophyllene (13.68%), from NM1 were bicyclogermacrene (16.14%) and α-pinene (15.93%), and for NM2, α-pinene (19.04%) and sabinene (16.66%). EO NM1 (1μL.mL-1) showed the best result for antifungal activity, inhibiting about 57.55 ± 0.68 % of P. sanguineus growth and 58.82 ± 0.78 % in the test with G. trabeum.

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巴西南部天然树种精油的抗真菌活性

本研究的目的是分析从Blepharocalyx salicifolius[BS]和从Nectandra megapotamica[NM1和NM2]获得的两个EO池中提取的精油（EO）的产量和化学成分，并评价它们对真菌红腐病（Pycnoporus sangeius）和黄腐病（Gloeophyllum trabeum）的抗真菌性能。EO通过加氢蒸馏获得，其组分通过气相色谱-质谱联用（GC-MS）进行鉴定，并通过火焰离子化检测（GC-FID）进行定量。为了评估抗真菌活性，在1、2和5µL.mL-1和0.25的浓度下测定BS的菌丝生长指数（MGI）和菌丝生长抑制（GI）；MN1和NM2分别为0.5和1µL.mL-1。EOs的产率分别为2.29%（BS）、0.14%（NM1）和0.17%（NM2）。BS-EO的主要成分为桉树醇（63.44%）和β-石竹烯（13.68%），NM1的主要成分是双环木烯（16.14%）和α-蒎烯（15.93%），NM2的主要成分则是α-松果烯（19.04%）和沙宾烯（16.66%）。

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来源期刊

Floresta Environmental Science-Nature and Landscape Conservation

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： Revista Floresta admits articles of scientific contribution in Forest Science, in the areas of Nature Conservation, Economy and Forest Policy, Forest Management, Silviculture and Wood Technology. The main task is to promote and divulgate the development of Forest Science in Brazil and in the world. Articles published in Revista Floresta are under total responsibility of the authors, who are aware that they are original studies. It remains implicit that articles were not submitted for publication to any other divulgation media. It remains explicit the agreement of authors to norms of the journal and, along the development of their work, the observance of ethic aspects and respect of the current copyright legislation.