RESUMO Bemisia tabaci (Hemiptera: Aleyrodidae) é um inseto polífago que causa danos diretos e indiretos na cultura do tomateiro. A pulverização com inseticidas sintéticos é um dos principais métodos de controle, porém, o uso abusivo dessa ferramenta pode impactar o ambiente e os seres humanos. Este estudo avaliou a bioatividade de extratos de plantas das famílias Asteraceae e Meliaceae sobre B. tabaci biótipo B em tomateiro. Um ensaio preliminar avaliou os efeitos dos extratos a 2% (p/v) sobre a infestação e oviposição dessa mosca-branca. Os efeitos ninficida e ovicida do extrato clorofórmico de Trichilia pallida - TP-Cl em seis concentrações foram avaliados. Finalmente, a TP-Cl CL50 foi estimada. Todos os extratos foram repelentes para a mosca-branca, com exceção de T. pallida (etanólico) e Melia azedarach (hexânico), considerados neutros em 24 h. Todos os extratos causaram deterrência para oviposição. Todas as concentrações de TP-Cl apresentaram atividade ninficida e as maiores promoveram as menores médias de viabilidade de ovos. A CL50 foi de 0,0955%. Os resultados evidenciaram o potencial dos extratos para serem usados como agentes alternativos de controle de B. tabaci biótipo B em tomateiro.

ABSTRACT Bemisia tabaci (Hemiptera: Aleyrodidae) is a polyphagous insect that causes direct and indirect damage on tomato. Spraying with synthetic insecticides is one of the main control tools for the whitefly; however, the abusive use of this tool can impact the environment and human beings. In this study we evaluated the bioactivity of extracts from plant species from Asteraceae and Meliaceae families on B. tabaci biotype B in tomato. A preliminary bioassay evaluated the effects of the extracts at 2% (w/v) on infestation and oviposition of this whitefly. Then, the nymphicidal and ovicidal effects of the chloroformic extract of Trichilia pallida - TP-Cl at six concentrations were performed. Finally, the TP-Cl LC50 was estimated. All extracts were repellent to the whitefly, except that ones from T. pallida (ethanolic) and Melia azedarach (hexanic), considered neutral at 24 h. All the extracts caused deterrence of oviposition. All concentrations of TP-Cl revealed nymphicidal activity and the highest ones provided the lowest egg viability averages. The estimated LC50 was 0.0955%. These results provide evidence for the potential of the extracts to be used as alternative control agents of B. tabaci biotype B in tomatoes.

Ultraviolet radiation is the major exogenous mediators of skin damage. To prevent such damage, sunscreen products are used. New research aims at both the elucidation of new sunscreen compounds, as well as new assets for supporting and synergistic action. In this article it is presented a systematic data of innovation for sunscreen and a discussion on prospects for partnership between universities and enterprises, where it is believed that the innovations in cosmetics, driven by the constant demand of the market in new products, may be a stimulus for the interactions between university and company in Brazil.