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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
27/09/2022 |
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Data da última atualização: |
23/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BRONDI, M.; FLORENCIO, C.; MATTOSO, L. H. C.; RIBEIRO, C.; FARINAS, C. S. |
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Afiliação: |
LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA; CAUE RIBEIRO DE OLIVEIRA, CNPDIA; CRISTIANE SANCHEZ FARINAS, CNPDIA. |
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Título: |
Encapsulation of Trichoderma harzianum with nanocellulose/carboxymethyl cellulose nanocomposite. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Carbohydrate Polymers, v. 295, 119876, 2022. |
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Páginas: |
9 p. |
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ISSN: |
0144-8617 |
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DOI: |
https://doi.org/10.1016/j.carbpol.2022.119876 |
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Idioma: |
Inglês |
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Conteúdo: |
This study proposes the use of green matrices of cellulose nanocrystals (CNC) and a nanocomposite of CNC with carboxymethyl cellulose (CMC) for efficiently encapsulating the plant biocontrol agent Trichoderma harzianum. Beads containing spores of the microorganism were produced by dripping dispersions of the polymers into a CaCl2 coagulation bath, resulting in the crosslinking of CNC chains by Ca2+ ions. SEM micrographs evidenced the T. harzianum spores in the encapsulation matrices. X-ray microtomography confirmed the random distribution of the microorganism within the polymeric matrix and the presence of internal pores in the CNC:CMC:spores beads. Encapsulation in the CNC:CMC nanocomposite favored growth of the fungus after 10 days of storage at room temperature, which could be attributed to the presence of internal pores and to the extra carbon source provided by the CMC. The results indicated that CNC:CMC nanocomposites are promising materials for protecting and delivering microbial inoculants for agricultural applications. |
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Palavras-Chave: |
Carboxymethyl cellulose; Cellulose nanocrystals; Microbial inoculant. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1146891/1/P-Encapsulation-of-Trichoderma-harzianum-with-nanocellulose-carboxymethyl.pdf
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Marc: |
LEADER 01779naa a2200241 a 4500
001 2146891
005 2024-01-23
008 2022 bl uuuu u00u1 u #d
022 $a0144-8617
024 7 $ahttps://doi.org/10.1016/j.carbpol.2022.119876$2DOI
100 1 $aBRONDI, M.
245 $aEncapsulation of Trichoderma harzianum with nanocellulose/carboxymethyl cellulose nanocomposite.$h[electronic resource]
260 $c2022
300 $a9 p.
520 $aThis study proposes the use of green matrices of cellulose nanocrystals (CNC) and a nanocomposite of CNC with carboxymethyl cellulose (CMC) for efficiently encapsulating the plant biocontrol agent Trichoderma harzianum. Beads containing spores of the microorganism were produced by dripping dispersions of the polymers into a CaCl2 coagulation bath, resulting in the crosslinking of CNC chains by Ca2+ ions. SEM micrographs evidenced the T. harzianum spores in the encapsulation matrices. X-ray microtomography confirmed the random distribution of the microorganism within the polymeric matrix and the presence of internal pores in the CNC:CMC:spores beads. Encapsulation in the CNC:CMC nanocomposite favored growth of the fungus after 10 days of storage at room temperature, which could be attributed to the presence of internal pores and to the extra carbon source provided by the CMC. The results indicated that CNC:CMC nanocomposites are promising materials for protecting and delivering microbial inoculants for agricultural applications.
653 $aCarboxymethyl cellulose
653 $aCellulose nanocrystals
653 $aMicrobial inoculant
700 1 $aFLORENCIO, C.
700 1 $aMATTOSO, L. H. C.
700 1 $aRIBEIRO, C.
700 1 $aFARINAS, C. S.
773 $tCarbohydrate Polymers$gv. 295, 119876, 2022.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
11/11/2010 |
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Data da última atualização: |
15/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
MONTEIRO, C. M. de O.; PRATA, M. C. de A.; FURLONG, J.; FAZA, A. P.; MENDES, A. S.; ANDALÓ, V.; MOINO-JUNIOR, A. |
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Afiliação: |
CAIO MÁRCIO DE OLIVEIRA MONTEIRO, UFJF; MARCIA CRISTINA DE AZEVEDO PRATA, CNPGL; JOHN FURLONG, CNPGL; ALINE PASQUALINI FAZA, FAPEMIG; ANDRESSA SILVA MENDES, CES-JF; VANESSA ANDALÓ, UFLA; ALCIDES MOINO-JUNIOR, UFLA. |
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Título: |
Heterorhabditis amazonensis (Rhabditidae: Heterorhabditidae), strain RSC-5, for biological control of the cattle tick Rhipicephalus (Boophilus) microplus (Acari: Ixodidae). |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Parasitology Research, v. 106, n. 4, p. 821-826, 2010. |
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DOI: |
https://doi.org/10.1007/s00436-010-1720-6 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to evaluate the influence of different doses of Heterorhabditis amazonensis RSC-5 on the biological parameters of engorged females of Rhipicephalus (Boophilus) microplus. The female ticks, individually identified, were divided into six groups of 20 each and exposed to the following nematode concentrations: 0, 75, 150, 300, 600, and 1,200/female. The following parameters were observed: initial weight, final weight, alteration weight, egg mass weight, pre-oviposition period, oviposition period, survival period, incubation period, hatching percentage, reproductive efficiency index (REI), nutritional efficiency index (NI), and percentage of control. There were no significant differences observed for the initial weight, pre-oviposition period, incubation period, and NI (p > 0.05) between the various treated groups and the control group. However, there were significant differences (p < 0.01) for the oviposition and survival periods between all the treated groups and the control group. For the final weight, alteration weight, egg mass weight, and REI, only the treatment with 1,200 nematode/female did not differ significantly from the respective figures for the control group (p > 0.05). The highest control rate was 67.8%, obtained in the treatment with a concentration of 300 entomopathogenic nematodes/female. The results demonstrate that this nematode has a deleterious effect on the majority of the biological parameters analyzed. |
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Palavras-Chave: |
Controle de parasita. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02252naa a2200217 a 4500
001 1866875
005 2024-02-15
008 2010 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s00436-010-1720-6$2DOI
100 1 $aMONTEIRO, C. M. de O.
245 $aHeterorhabditis amazonensis (Rhabditidae$bHeterorhabditidae), strain RSC-5, for biological control of the cattle tick Rhipicephalus (Boophilus) microplus (Acari: Ixodidae).$h[electronic resource]
260 $c2010
520 $aThe aim of this study was to evaluate the influence of different doses of Heterorhabditis amazonensis RSC-5 on the biological parameters of engorged females of Rhipicephalus (Boophilus) microplus. The female ticks, individually identified, were divided into six groups of 20 each and exposed to the following nematode concentrations: 0, 75, 150, 300, 600, and 1,200/female. The following parameters were observed: initial weight, final weight, alteration weight, egg mass weight, pre-oviposition period, oviposition period, survival period, incubation period, hatching percentage, reproductive efficiency index (REI), nutritional efficiency index (NI), and percentage of control. There were no significant differences observed for the initial weight, pre-oviposition period, incubation period, and NI (p > 0.05) between the various treated groups and the control group. However, there were significant differences (p < 0.01) for the oviposition and survival periods between all the treated groups and the control group. For the final weight, alteration weight, egg mass weight, and REI, only the treatment with 1,200 nematode/female did not differ significantly from the respective figures for the control group (p > 0.05). The highest control rate was 67.8%, obtained in the treatment with a concentration of 300 entomopathogenic nematodes/female. The results demonstrate that this nematode has a deleterious effect on the majority of the biological parameters analyzed.
653 $aControle de parasita
700 1 $aPRATA, M. C. de A.
700 1 $aFURLONG, J.
700 1 $aFAZA, A. P.
700 1 $aMENDES, A. S.
700 1 $aANDALÓ, V.
700 1 $aMOINO-JUNIOR, A.
773 $tParasitology Research$gv. 106, n. 4, p. 821-826, 2010.
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