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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação; Embrapa Milho e Sorgo. |
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Data corrente: |
06/02/2025 |
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Data da última atualização: |
06/02/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LODI, L. A.; LOPES, M. M.; GRACIANO, V. A.; BORGES, R.; OLIVEIRA-PAIVA, C. A.; OLIVEIRA, C. R. de; FARINAS, C. S. |
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Afiliação: |
LUDIMILA ARAÚJO LODI, UNIVERSIDDE FEDERAL DE SAO CARLOS; MARINA MOMESSO LOPES, UNIVERSIDADE FEDERAL DE SAO CARLOS; VANESSA ARAUJO GRACIANO, UNIVERSIDADE FEDERAL DE SAO CARLOS; ROGER BORGES; CHRISTIANE ABREU DE OLIVEIRA PAIVA, CNPMS; CAUE RIBEIRO DE OLIVEIRA, CNPDIA; CRISTIANE SANCHEZ FARINAS, CNPDIA. |
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Título: |
Microencapsulation of Bacillus megaterium in cationic starch/ PVA-based matrices. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
International Journal of Biological Macromolecules, v. 303, 140588, 2025. |
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DOI: |
https://doi.org/10.1016/j.ijbiomac.2025.140588 |
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Idioma: |
Inglês |
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Conteúdo: |
The increasing demand for sustainable and effective agricultural bio-based products is driving innovation in encapsulation technologies for beneficial microorganisms, such as Bacillus strains, known for promoting plant growth and controlling pathogens. This study proposes an efficient methodology for encapsulating Bacillus megaterium within microparticles using a simple cross-linking/emulsion process based on Cationic Starch (CS) and Polyvinyl Alcohol (PVA). Citric acid (CA) and Sodium Trimetaphosphate (STMP) were employed as crosslinking agents, while bentonite (Bent) was added to modify the materials. The resulting microparticles exhibi ted a range of properties influenced by the cross-linking agents and bentonite. Encapsulation matrices with STMP and STMP-Bent demonstrated superior performance in providing controlled bacterial release and enhanced protection under adverse conditions. These matrices maintained up to 95 % of the initial cell viability after exposure to heat (55 ◦C for 24 h), and up to 98 % viability after exposure to UV light (180 min) or pesticides (30 ◦C for 24 h). In contrast, matrices containing CA or CA-Bent, as well as free bacteria, showed significantly lower bacterial survival rates in the same tests. In a high-salinity soil test (200 mM), STMP-based matrices provided the best protection for encapsulated bacteria, leading to a 10 % increase in B. megaterium growth. Furthermore, these matrices demonstrated an estimated shelf-life of over 40 months when stored at temperatures of 15 ◦C, 30 ◦C, and 45 ◦C. These findings suggest that CS/PVA matrices cross-linked with STMP offer a promising approach for developing more resilient and effective bio-based agricultural products. MenosThe increasing demand for sustainable and effective agricultural bio-based products is driving innovation in encapsulation technologies for beneficial microorganisms, such as Bacillus strains, known for promoting plant growth and controlling pathogens. This study proposes an efficient methodology for encapsulating Bacillus megaterium within microparticles using a simple cross-linking/emulsion process based on Cationic Starch (CS) and Polyvinyl Alcohol (PVA). Citric acid (CA) and Sodium Trimetaphosphate (STMP) were employed as crosslinking agents, while bentonite (Bent) was added to modify the materials. The resulting microparticles exhibi ted a range of properties influenced by the cross-linking agents and bentonite. Encapsulation matrices with STMP and STMP-Bent demonstrated superior performance in providing controlled bacterial release and enhanced protection under adverse conditions. These matrices maintained up to 95 % of the initial cell viability after exposure to heat (55 ◦C for 24 h), and up to 98 % viability after exposure to UV light (180 min) or pesticides (30 ◦C for 24 h). In contrast, matrices containing CA or CA-Bent, as well as free bacteria, showed significantly lower bacterial survival rates in the same tests. In a high-salinity soil test (200 mM), STMP-based matrices provided the best protection for encapsulated bacteria, leading to a 10 % increase in B. megaterium growth. Furthermore, these matrices demonstrated an estimated shelf-life of over 40 months wh... Mostrar Tudo |
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Palavras-Chave: |
Controlled release; Emulsão Encapsulamento; Microbial inoculant; Tolerância ao estresse. |
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Thesagro: |
Emulsão; Inoculante. |
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Thesaurus Nal: |
Emulsions; Encapsulation; Stress tolerance. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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| 20. |  | PASQUAL, M.; PETRI, J.; PEREIRA, A. J. Polinização da macieira. II. Cultivares Starkrimson, Blackjon e Hawaii. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 16, n. 3, p. 431-437, maio/jun. 1981 Título em inglês: Pollination of the apple tree. II. Cultivars Starkrimson, Blackjon and Hawaii.| Biblioteca(s): Embrapa Unidades Centrais. |
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