Abstract
This study evaluated the molluscicidal activity of essential oils (EOs) of Syzygium cumini L. and Hymenaea courbaril L. Hydrodistillation was used to extract the EOs. The chemical characterization was performed by Gas Chromatography coupled to mass spectrometry. The bioassay of Artemia salina Leach was used for the toxicity test. The molluscicidal assay tested concentrations of 10-80 mg L-1 of the EOs against Biomphalaria glabrata. The major constituent of The EO of S. cumini was isokaryophyllene and H. courbaril the Germacreno-D. The toxicity assay classified The EOs as nontoxic with LC50 412.10 mg L-1 for S. cumini and LC50 354.80 mg L-1 for H. courbaril. The molluscicidal assay purchased LC50 44.76/ LC90 77.20 for S. cumini and LC50 37.34 mg L-1/ LC90 73.24 mg L-1 for H. courbaril. The results showed that both EOs can be used as natural molluscicides in combating the snail Biomphalaria glabrata.
Highlights
This study evaluated the molluscicidal activity of essential oils (EOs) of Syzygium cumini L. and Hymenaea courbaril L
The results showed that both EOs can be used as natural molluscicides in combating the snail Biomphalaria glabrata
Schistosomiasis, popularly known as schist, snail disease or water belly, is a parasitic disease caused by helminth Schistosoma mansoni that has as its definitive host man and intermediate the mollusc of the Biomphalaria glabrata (Rocha et al, 2013)
Summary
Schistosomiasis, popularly known as schist, snail disease or water belly, is a parasitic disease caused by helminth Schistosoma mansoni that has as its definitive host man and intermediate the mollusc of the Biomphalaria glabrata (Rocha et al, 2013). The use of molluscicide of synthetic origin has generated concern regarding factors such as: toxicity to other species, low selectivity; contamination of the environment and the high cost of being imported (Cantanhede, Marques, Silva-Souza, & Valverde, 2010) In this context, the search for biodegradable substances has increased the interest in researchers in the search for natural products that present molluscicide activity. Brazil is the country with the largest diversity of plants in the world, with approximately 55,000 plant species cataloged from an estimated total of between 350,000 and 550,000 species worldwide (Teles, Ferreira, & Carvalho, 2014) The properties of these medicinal plants are directly related to their essential oils (EOs), which are a complex mixture of various active substances, including terpenes, which are formed by isoprelene units and phenylpropane derivatives (Ascenção & Mouchrek Filho, 2013). This study aimed to perform the chemical characterization, toxicity and evaluation of molluscicidal activity of essential oil extracted from the leaves of S. cumini and the bark of H. courbaril L
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