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Avocado kernels, an industrial residue: a source of compounds with insecticidal activity against silverleaf whitefly.
de Carvalho, Sheila Salles; Ribeiro, Leandro do Prado; Forim, Moacir Rossi; da Silva, Maria Fátima das Graças Fernandes; Bicalho, Keylla Utherdyany; Fernandes, João Batista; Vendramim, José Djair.
Afiliação
  • de Carvalho SS; Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture, University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, 13418-900, Brazil.
  • Ribeiro LDP; Research Center for Family Agriculture, Agricultural Research and Rural Extension Company of Santa Catarina (CEPAF/EPAGRI), Rua Servidão Ferdinando Ricieri Tusset S/N - Bairro São Cristóvão, Chapecó, Santa Catarina, CEP 89803-904, Brazil. leandro_universidade@hotmail.com.
  • Forim MR; Department of Chemistry, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, 13565-905, Brazil.
  • da Silva MFDGF; Department of Chemistry, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, 13565-905, Brazil.
  • Bicalho KU; Department of Chemistry, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, 13565-905, Brazil.
  • Fernandes JB; Department of Chemistry, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, 13565-905, Brazil.
  • Vendramim JD; Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture, University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, 13418-900, Brazil.
Environ Sci Pollut Res Int ; 28(2): 2260-2268, 2021 Jan.
Article em En | MEDLINE | ID: mdl-32875452
Fruit processing waste, such as kernels (endocarp + seed) of avocado [Persea americana Mill. (Lauraceae)], could be used as raw material in the preparation of botanical insecticides. In light of this potential, this study assessed the insecticidal action of extracts and fractions from kernels of two avocado cultivars (Breda and Margarida) on Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) biotype B, an important pest species in tropical conditions. Ethanolic and aqueous extracts prepared from kernels of P. americana, regardless of the plant cultivar used, caused promising insecticidal activity to whitefly nymphs. Based on yield in crude extracts [10.32 and 9.85% (w/w), respectively, for cultivars Breda and Margarida], on the bioassay results with crude extracts and on the chemical profiles, the ethanolic extract of kernels of P. americana cv. Breda was chose for the continuation of the study. Thus, the ethanolic extract of kernels of cv. Breda (LC50 = 197.84 ppm and LC90 = 567.19 ppm) was selected and subjected to fractionation by the liquid-liquid partition technique. The hexane and dichloromethane fractions of this extract caused significant mortality of nymphs. The analysis using the ultraviolet (UV) and hydrogen nuclear magnetic resonance (1H NMR) showed the presence of long-chain aliphatic compounds (alkanols or acetogenins of Lauraceae), alkylfurans (or avocadofurans), and unsaturated fatty acids in these fractions, which are possibly related to bioactivity observed in B. tabaci, besides saccharides. The results show that kernels of P. americana are promising sources of compounds with insecticidal action for the control of B. tabaci biotype B, a great opportunity to transform environmental problems into eco-friendly solutions to agriculture.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Persea / Hemípteros / Inseticidas Limite: Animals Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Persea / Hemípteros / Inseticidas Limite: Animals Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha