CHEMICAL COMPOSITION AND ACARICIDE ACTIVITY OF THE ESSENTIAL OILS OF TWO SPECIES OF MYRTACEAE FAMILY

Authors

  • Tchiara Margarida Alves Tenório Universidade Federal Rural de Pernambuco
  • Marcilio Martins de Moraes Universidade Federal Rural de Pernambuco
  • Claudio Augusto Gomes da Camara Universidade Federal Rural de Pernambuco

Keywords:

ESSENTIAL OIL, B. salicifolius, C. adamantium, ACARICIDES, CHEMICAL COMPOSITION.

Abstract

Blepharocalyx salicifolius and Campomanesia adamantium (Myrtaceae) are endemic tree species of the Brazilian Cerrado Biome. Popularly known as "myrtle" and "gabiroba", respectively, they are used in folk medicine to treat diarrhea, hypertension, diabetes and rheumatism. Phytochemical studies reveal the presence of phenolic compounds, flavones, chalcones and fatty acid in leaf extracts. In literature, essential oil (EO) these species are related to antimicrobial, anti-inflammatory and antifungal properties. However, at the moment there are no reports about the action of the acaricide activity of the essential oils of these species. Tetranychus urticae (Koch) popularly known as “two spotted spider mite” is a cosmopolitan and polyphagic species considered one of the main agricultural pests worldwide, causing damage to vegetables and fruits in greenhouses and open environments. The objective of the present work is to determine the chemical composition and the acaricidal action of B. salicifolius and C. adamantium leaf oils. Leaves of B. salicifolius and C. adamantium were collected in the Federal University of Brazilian, no District-Brazil, and the EOs were obtained by hydrodistillation technique. The evaluation of the acaricidal potential of EOs against T. urticae was carried out through residual contact bioassays. The OEs were analyzed by GC-MS that revealed as mains constituents α-eudesmol (10.85 %) and spathulenol (9.26 %) for B. salicifolius oil. For the essential oil from C. adamantium were detected as major constituents the sesquiterpenes nootkatone (15.64 %) and germacrene A (14.73 %). The acaricidal action of the EOs revealed that both oils were toxic to T. urticae being C. adamantium oil (LC50 = 49.51 µL/mL) about twice times more toxic to T. urticae than B. salicifolius oil (LC50 = 82.75 µL/mL).

Published

2019-10-20

How to Cite

Tenório, T. M. A., Moraes, M. M. de, & Camara, C. A. G. da. (2019). CHEMICAL COMPOSITION AND ACARICIDE ACTIVITY OF THE ESSENTIAL OILS OF TWO SPECIES OF MYRTACEAE FAMILY. Caderno Verde De Agroecologia E Desenvolvimento Sustentável, 9(5), b–90. Retrieved from https://www.gvaa.com.br/revista/index.php/CVADS/article/view/7216

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