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Registro Completo |
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
08/12/2017 |
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Data da última atualização: |
09/05/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FREITAS, M. N. de; ROSA, S. D. V. F. da; CLEMENTE, A. da C. S.; PEREIRA, C. C. |
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Afiliação: |
MARCELLA NUNES DE FREITAS, ESALQ; STTELA DELLYZETE VEIGA F DA ROSA, SAPC; ALINE DA CONSOLAÇÃO SAMPAIO CLEMENTE, UFLA; CRISTIANE CARVALHO PEREIRA, UFLA. |
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Título: |
Relevance of endo-ß-mannanase enzyme in coffee seed deterioration process. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
African Journal of Agricultural Research, v. 12, n. 15, p. 1253-1258, April, 2017 |
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Idioma: |
Inglês |
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Conteúdo: |
The endo-?-mannanase acts on the hemicellulose fraction of the endosperm cell walls, mainly mannans and galactomannans. This process weakens cell walls and allows radicle protrusion during seed germination, but may also occur during the deterioration process. Thus, the aim of this research was to determine the activity of endo-?-mannanase enzyme in dry coffee seeds and in soaked seeds, evaluating its relationship between physiological qualities. Coffee seeds obtained by different processing methods (natural, fermented and demucilated) and drying (sun, shade and dryer) were used. Seed quality was evaluated by germination and tetrazolium tests, and the endo-?-mannanase enzyme activity was determined in dry seeds and after 10 days of soaking. From the results, it was concluded that there is significant inverse relationship between the physiological quality of coffee seeds and the expression of endo-?-mannanase, and seeds with lower percentages of germination and viability of embryos have a higher activity of the enzyme. After ten days of soaking, coffee seeds had higher expression of endo-?-mannanase as compared to the dry seeds for all treatments of fruit processing and drying. |
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Palavras-Chave: |
Physiological quality; Processing. |
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Thesaurus Nal: |
Drying; Endosperm; Hemicellulose. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/168537/1/Relevance-of-endo-B-mannanase.pdf
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Marc: |
LEADER 01851naa a2200217 a 4500
001 2081994
005 2019-05-09
008 2017 bl uuuu u00u1 u #d
100 1 $aFREITAS, M. N. de
245 $aRelevance of endo-ß-mannanase enzyme in coffee seed deterioration process.$h[electronic resource]
260 $c2017
520 $aThe endo-?-mannanase acts on the hemicellulose fraction of the endosperm cell walls, mainly mannans and galactomannans. This process weakens cell walls and allows radicle protrusion during seed germination, but may also occur during the deterioration process. Thus, the aim of this research was to determine the activity of endo-?-mannanase enzyme in dry coffee seeds and in soaked seeds, evaluating its relationship between physiological qualities. Coffee seeds obtained by different processing methods (natural, fermented and demucilated) and drying (sun, shade and dryer) were used. Seed quality was evaluated by germination and tetrazolium tests, and the endo-?-mannanase enzyme activity was determined in dry seeds and after 10 days of soaking. From the results, it was concluded that there is significant inverse relationship between the physiological quality of coffee seeds and the expression of endo-?-mannanase, and seeds with lower percentages of germination and viability of embryos have a higher activity of the enzyme. After ten days of soaking, coffee seeds had higher expression of endo-?-mannanase as compared to the dry seeds for all treatments of fruit processing and drying.
650 $aDrying
650 $aEndosperm
650 $aHemicellulose
653 $aPhysiological quality
653 $aProcessing
700 1 $aROSA, S. D. V. F. da
700 1 $aCLEMENTE, A. da C. S.
700 1 $aPEREIRA, C. C.
773 $tAfrican Journal of Agricultural Research$gv. 12, n. 15, p. 1253-1258, April, 2017
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Embrapa Café (CNPCa) |
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| 1. |  | NASCIMENTO, L. DE S.; NASCIMENTO, R. J. M.; MATA, A. K. A. DA; FELIPE, V. T. A.; ARAÚJO, R. F.; BEZERRA, L. C. A.; ALMEIDA, J. S.; MATTOS, A. L. A.; UCHOA, D. E. A.; NOVAIS, L. M. R. DE; MONTES D’OCA, C. DA R.; AVELINO, F. Development of a phosphorous-based biorefinery process for producing lignocellulosic functional materials from coconut wastes. International Journal of Biological Macromolecules, 239, 124300, 2023.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 2. | | NASCIMENTO, R. J. M.; BEZERRA, L. C. A.; ALMEIDA, J. S.; BARROS, M. DE O.; SILVA, L. R. R.; ROSA, M. de F.; MAZZETO, S. E.; LOMONACO, D.; PEREIRA, K. R. A.; AVELINO, F. Elucidating the adsorption mechanism of Rhodamine B on mesoporous coconut coir?based biosorbents through a non?linear modeling and recycling approach. Environmental Science and Pollution Research, jan. 2022.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| Registros recuperados : 2 | |
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