Piperolein B and piperchabamide D isolated from black pepper (Piper nigrum L.) as larvicidal compounds against the diamondback moth (Plutella xylostella)

Abstract

Our results demonstrate that piperolein B and piperchabamide D isolated from P. nigrum are the major constituents of the extract demonstrating insecticidal properties for the control of P. xylostella larvae. These plant-derived compounds should become useful alternatives to synthetic chemicals after studying their insecticidal mechanisms. © 2017 Society of Chemical Industry.

Naturally occurring Piper plant amides potential in agricultural and pharmaceutical industries: perspectives of piperine and piperlongumine

“…Piperlongumine was used as a standard material, and method validation was conducted to establish optimal experimental conditions. Under these analytical conditions, piperlongumine and piperovatine (7) were each identified in all of the components of P. ovatum using HPLC, indicating it is suitable for routine quantitative analysis of amides in plant extracts.…”

“…Recently, larvae from the diamondback moth (Plutella xylostella) were exposed to two newly isolated amide compounds from P. nigrum, piperolein B (8) and piperchabamide D (9); these compounds demonstrated 96.7% and 79.2% mortality, respectively, at a concentration of 0.1 mg/mL [7]. The duration of exposure to the material under these experimental conditions was 4 days.…”

Diversidade De Formigas Em Área De Interação Entre Floresta Plantada E Natural No Bioma Cerrado

“…Possui grande porte e crescimento acelerado, podendo atingir alturas entre 25 e 35 m em um curto período de tempo. Esta produtividade da teca está relacionada as condições edafoclimáticas fisiográficas favoráveis para o estabelecimento e expansão dos plantios florestais no bioma Cerrado (SILVA et al, 2010). O processo de implantação de florestas neste bioma pode modificar as condições ambientais.…”

“…Atualmente, uma das principais formas de controle desta praga é pela aplicação de inseticidas sintéticos, gerando, dessa forma, sérios danos ambientais e à saúde dos consumidores, que em geral ingerem brássicas in natura ou com pouco preparo . Neste contexto, os produtos naturais vem sendo alvo de pesquisas visando seu potencial inseticida, por serem importantes fontes de compostos bioativos (GOMES et al, 2016;HWANG et al, 2017). Estes estudos buscam substâncias que sejam efetivas e seletivas aos organismos-alvo, e que proporcionem o desenvolvimento sustentável dos sistemas agrícolas (SPARKS et al, 2017).…”

Evaluation of the larvicidal potential of root and leaf extracts of Saussurea costus (Falc.) Lipsch. against three mosquito vectors:Anopheles stephensi, Aedes aegypti, and Culex quinquefasciatus

“…Mosquito control is facing timely challenges due to the inadequate success of bio-control programs and emergence of resistance to the conventional synthetic insecticides, which have necessitated the need to investigate and develop unconventional strategies by means of eco-friendly, environmentally safe, and biodegradable products as mosquito larvicides 7 . Natural products from plants have been evaluated as prototypes for new insecticidal agents, as they comprise a rich source of bioactive compounds that are potentially suitable for utilization in integrated management programs 8 . Consequently, the present study was undertaken to investigate the larvicidal potential of root and leaf extracts of S. costus against the early 4 th instar larvae of An.…”