New cost-effective bioconversion process of palm kernel cake into bioinsecticides based on Beauveria bassiana and Isaria javanica

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dc.creatorSilva, Jaqueline do Nascimento
dc.creatorMascarin, Gabriel Moura
dc.creatorGomes, Isabel Cristina dos Santos
dc.creatorTinoco, Ricardo Salles
dc.creatorQuintela, Eliane Dias
dc.creatorCastilho, Leda dos Reis
dc.creatorFreire, Denise Maria Guimaraes
dc.date.accessioned2025-04-03T17:10:22Z
dc.date.available2025-04-03T17:10:22Z
dc.date.issued2018
dc.description.abstractThe present study aimed to add value to palm oil by-products as substrates to efficiently produce conidia of Beauveria bassiana and Isaria javanica (Hypocreales: Cordycipitaceae) for biological control of the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae), through a solid-state fermentation process using palm kernel cake and palm fiber as nutrient source and solid matrix, respectively. The optimum culture conditions yielded high concentrations of viable conidia after air-drying, when the fungi were grown on palm kernel cake (B. bassiana 7.65 × 109 and I. javanica 2.91 × 109 conidia g−1 dry substrate) after 6 days under optimal growth conditions set to 60% substrate moisture and 32 °C. Both fungal strains exhibited high efficacy against third-instar whitefly nymphs, inducing mortality up to 62.9 and 56.6% by B. bassiana and I. javanica, respectively, assessed after 9 days post-application in a screenhouse. Furthermore, we noted that insect mortality was strongly correlated with high atmospheric moisture, while B. bassiana appeared to require shorter accumulative hours under high moisture to kill whitefly nymphs compared to I. javanica. Our results underpin a feasible and cost-effective mass production method for aerial conidia, using palm kernel as the main substrate in order to produce efficacious fungal bioinsecticides against an invasive whitefly species in Brazil. Finally, our fermentation process may offer a sustainable and cost-effective means to produce eco-friendly mycoinsecticides, using an abundant agro-industrial by-product from Brazil that will ultimately assist in the integrated management of agricultural insect pests.
dc.identifier.citationSILVA, Jaqueline do Nascimento et al. New cost-effective bioconversion process of palm kernel cake into bioinsecticides based on Beauveria bassiana and Isaria javanica. Applied Microbiology and Biotechnology, [s. l.], v. 102, p. 2595-2606, 2018. DOI: 10.1007/s00253-018-8805-z. Disponível em: https://link.springer.com/article/10.1007/s00253-018-8805-z. Acesso em: 26 mar. 2025.
dc.identifier.doi10.1007/s00253-018-8805-z
dc.identifier.issn0175-7598
dc.identifier.issne- 1432-0614
dc.identifier.urihttps://link.springer.com/article/10.1007/s00253-018-8805-z.
dc.language.isoeng
dc.publisher.countryAlemanha
dc.publisher.departmentEscola de Agronomia - EA (RMG)
dc.rightsAcesso Restrito
dc.subjectSolid-state fermentation
dc.subjectAgro-industrial by-products
dc.subjectEntomopathogenic fungi
dc.subjectCordycipitaceae
dc.subjectBiological control
dc.subjectBemisia tabaci
dc.titleNew cost-effective bioconversion process of palm kernel cake into bioinsecticides based on Beauveria bassiana and Isaria javanica
dc.typeArtigo

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