| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
30/07/2015 |
|
Data da última atualização: |
17/02/2016 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
HORNUNG, P. S.; GRANZA, A. G.; OLIVEIRA, C. S. de; LAZZAROTTO, M.; SCHNITZLER, E. |
|
Afiliação: |
Polyanna Silveira Hornung, UEPG; Andressa Gabardo Granza, UEPG; Cristina Soltovski de Oliveira, UEPG; MARCELO LAZZAROTTO, CNPF; Egon Schnitzler, UEPG. |
|
Título: |
Study of the effects of ultraviolet light and sodium hypochlorite solutions on properties of Cassava starch granules. |
|
Ano de publicação: |
2015 |
|
Fonte/Imprenta: |
Food Biophysics, v. 10, n. 3, p. 368-374, Sept. 2015. |
|
DOI: |
10.1007/s11483-015-9402-7 |
|
Idioma: |
Inglês |
|
Conteúdo: |
In this study, samples of native cassava starch were oxidised with standard NaClO solutions (0.1, 0.2 and 0.5 mol L−1) and exposed for 1 h under UV light (UVC radiation with λ=256 nm); they were subsequently filtered, washed, dried and analysed. The thermogravimetric curves showed similar behaviour, with three main mass losses and a decrease in the thermal stability for samples (1) and (3). The oxidative modification performed caused a decrease in the viscosity peaks (RVA), gelatinisation enthalpy (DSC) and relative crystallinity (XRD), and an increase in the average roughness (NC-AFM). The X-ray diffraction powder patterns displayed the BA^ type for all the starch granules. The colour parameters showed a slight increase in the L* value (trend to white) for the treated samples. |
|
Palavras-Chave: |
Amido oxidado; Hipoclorito de sódio; Luz ultravioleta; Oxidised starch; Ultraviolet light. |
|
Thesagro: |
Espécie Nativa. |
|
Thesaurus Nal: |
cassava starch; sodium hypochlorite; thermal analysis. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01690naa a2200289 a 4500
001 2020932
005 2016-02-17
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1007/s11483-015-9402-7$2DOI
100 1 $aHORNUNG, P. S.
245 $aStudy of the effects of ultraviolet light and sodium hypochlorite solutions on properties of Cassava starch granules.$h[electronic resource]
260 $c2015
520 $aIn this study, samples of native cassava starch were oxidised with standard NaClO solutions (0.1, 0.2 and 0.5 mol L−1) and exposed for 1 h under UV light (UVC radiation with λ=256 nm); they were subsequently filtered, washed, dried and analysed. The thermogravimetric curves showed similar behaviour, with three main mass losses and a decrease in the thermal stability for samples (1) and (3). The oxidative modification performed caused a decrease in the viscosity peaks (RVA), gelatinisation enthalpy (DSC) and relative crystallinity (XRD), and an increase in the average roughness (NC-AFM). The X-ray diffraction powder patterns displayed the BA^ type for all the starch granules. The colour parameters showed a slight increase in the L* value (trend to white) for the treated samples.
650 $acassava starch
650 $asodium hypochlorite
650 $athermal analysis
650 $aEspécie Nativa
653 $aAmido oxidado
653 $aHipoclorito de sódio
653 $aLuz ultravioleta
653 $aOxidised starch
653 $aUltraviolet light
700 1 $aGRANZA, A. G.
700 1 $aOLIVEIRA, C. S. de
700 1 $aLAZZAROTTO, M.
700 1 $aSCHNITZLER, E.
773 $tFood Biophysics$gv. 10, n. 3, p. 368-374, Sept. 2015.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Amapá. |
|
Data corrente: |
04/12/2015 |
|
Data da última atualização: |
14/03/2017 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
B - 1 |
|
Autoria: |
DIAS, M. K. R.; TAVARES-DIAS, M. |
|
Afiliação: |
MARCOS TAVARES-DIAS, CPAF-AP. |
|
Título: |
Seasonality affects the parasitism levels in two fish species in the eastern Amazon region. |
|
Ano de publicação: |
2015 |
|
Fonte/Imprenta: |
Journal of Applied Ichthyology, v. 31, n. 6, p. 1049-1055, 2015. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Fish parasite communities have strong interactions with the environment, the host fish, and the aquatic invertebrate communities. Thus, factors directly involving their different life cycles, such as different host populations and environments, as well as seasonal fluctuations in water levels can cause different responses. The main factors structuring parasite communities may be the hydrodynamic variations, together with seasonal variations in the availability of infectious stages of parasites in the environment. The purpose of this study was therefore to investigate the influence of the rainy and dry seasons on parasite infracommunities in fish species in the Amazon River System of Brazil. Between October 2009 and April 2011, specimens of Colossoma macropomum and Colossoma macropomum x Piaractus brachypomushybrids (tambatinga) were examined for the presence of parasites. The parasite communities were similar in these two species that both showed aggregate dispersion, although the hybrid specimens were less parasitized. For both hosts, the Brillouin diversity, species richness, evenness and Berger-Parker dominance indices were similar in the rainy season and dry season, except that the Berger-Parker dominance index for the C. macropomum x P. brachypomushybrid was higher during the dry season. Ichthyophthirius multifiliis was the dominant parasite, followed by Piscinoodinium pillulare, in both hosts. However, C. macropomumhad a higher prevalence and abundance in the dry season, while in the C. macropomum x P. brachypomushybrid, only the I. multifiliis prevalence increased. The abundance of monogenean species (Anacanthorus spathulatus, Linguadactyloides brinkmanni, Mymarotheciumand Notozothecium janauachensis) was higher during the dry season in the gills of C. macropomum. Despite over dispersion of the lernaeid Perulernaea gamitanae, a seasonal pattern was seen only in the C. macropomum x P. brachypomushybrid, with higher prevalence in the rainy season. The low prevalence and abundance of the ectoparasites Tetrahymenasp., Trichodinasp. and Braga patagonica, as well as of the endoparasites Procamallalus (Spirocamallanus) inopinatus and Neoechinorhynchus buttnerae, were not affected by seasonality. This information is applicable in farming practice for these economically important fish, as it indicates the best time for prophylactic management and treatment against parasites, in order to prevent economic losses in fish farms. MenosFish parasite communities have strong interactions with the environment, the host fish, and the aquatic invertebrate communities. Thus, factors directly involving their different life cycles, such as different host populations and environments, as well as seasonal fluctuations in water levels can cause different responses. The main factors structuring parasite communities may be the hydrodynamic variations, together with seasonal variations in the availability of infectious stages of parasites in the environment. The purpose of this study was therefore to investigate the influence of the rainy and dry seasons on parasite infracommunities in fish species in the Amazon River System of Brazil. Between October 2009 and April 2011, specimens of Colossoma macropomum and Colossoma macropomum x Piaractus brachypomushybrids (tambatinga) were examined for the presence of parasites. The parasite communities were similar in these two species that both showed aggregate dispersion, although the hybrid specimens were less parasitized. For both hosts, the Brillouin diversity, species richness, evenness and Berger-Parker dominance indices were similar in the rainy season and dry season, except that the Berger-Parker dominance index for the C. macropomum x P. brachypomushybrid was higher during the dry season. Ichthyophthirius multifiliis was the dominant parasite, followed by Piscinoodinium pillulare, in both hosts. However, C. macropomumhad a higher prevalence and abundance in the dry seaso... Mostrar Tudo |
|
Palavras-Chave: |
Parasite animal; Parasito animal. |
|
Thesagro: |
Climatologia; Variação sazonal. |
|
Thesaurus NAL: |
climatology; seasonal variation. |
|
Categoria do assunto: |
S Ciências Biológicas |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/134859/1/CPAF-AP-2015-Seasonality-affetcs.pdf
|
|
Marc: |
LEADER 03093naa a2200205 a 4500
001 2030660
005 2017-03-14
008 2015 bl uuuu u00u1 u #d
100 1 $aDIAS, M. K. R.
245 $aSeasonality affects the parasitism levels in two fish species in the eastern Amazon region.$h[electronic resource]
260 $c2015
520 $aFish parasite communities have strong interactions with the environment, the host fish, and the aquatic invertebrate communities. Thus, factors directly involving their different life cycles, such as different host populations and environments, as well as seasonal fluctuations in water levels can cause different responses. The main factors structuring parasite communities may be the hydrodynamic variations, together with seasonal variations in the availability of infectious stages of parasites in the environment. The purpose of this study was therefore to investigate the influence of the rainy and dry seasons on parasite infracommunities in fish species in the Amazon River System of Brazil. Between October 2009 and April 2011, specimens of Colossoma macropomum and Colossoma macropomum x Piaractus brachypomushybrids (tambatinga) were examined for the presence of parasites. The parasite communities were similar in these two species that both showed aggregate dispersion, although the hybrid specimens were less parasitized. For both hosts, the Brillouin diversity, species richness, evenness and Berger-Parker dominance indices were similar in the rainy season and dry season, except that the Berger-Parker dominance index for the C. macropomum x P. brachypomushybrid was higher during the dry season. Ichthyophthirius multifiliis was the dominant parasite, followed by Piscinoodinium pillulare, in both hosts. However, C. macropomumhad a higher prevalence and abundance in the dry season, while in the C. macropomum x P. brachypomushybrid, only the I. multifiliis prevalence increased. The abundance of monogenean species (Anacanthorus spathulatus, Linguadactyloides brinkmanni, Mymarotheciumand Notozothecium janauachensis) was higher during the dry season in the gills of C. macropomum. Despite over dispersion of the lernaeid Perulernaea gamitanae, a seasonal pattern was seen only in the C. macropomum x P. brachypomushybrid, with higher prevalence in the rainy season. The low prevalence and abundance of the ectoparasites Tetrahymenasp., Trichodinasp. and Braga patagonica, as well as of the endoparasites Procamallalus (Spirocamallanus) inopinatus and Neoechinorhynchus buttnerae, were not affected by seasonality. This information is applicable in farming practice for these economically important fish, as it indicates the best time for prophylactic management and treatment against parasites, in order to prevent economic losses in fish farms.
650 $aclimatology
650 $aseasonal variation
650 $aClimatologia
650 $aVariação sazonal
653 $aParasite animal
653 $aParasito animal
700 1 $aTAVARES-DIAS, M.
773 $tJournal of Applied Ichthyology$gv. 31, n. 6, p. 1049-1055, 2015.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amapá (CPAF-AP) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
