|
|
|
| Registros recuperados: 12 | |
|
|
| Silveira,Cristina Moreira da; Badiale-Furlong,Eliana. |
| Functional properties of fermented bran produced by Aspergillus oryzae and Rhizopus sp. in a solid-state fermentation system were determined, with an aim to evaluate their application in food formulation. The defatted rice bran and wheat bran were inoculated with the spores of the cultures and incubated at 30º C for 72 h. Samples were withdrawn at 0, 24, 48 and 72 h. Protein content, protein solubility, in-vitro digestibility, gelation and water holding capacity were determined in bran with or without fermentation. Rhizopus sp. increased significantly the protein content (69.0 and 56.0%, respectively, for defatted rice bran and wheat bran); protein solubility (28.5 and 36.2) and water holding capacity (11.4% for wheat bran). When A. oryzae was used all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Functional properties; Solid-state fermentation; Defatted rice bran; Wheat bran. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600027 |
| |
|
| |
|
| |
|
|
| Heidtmann-Bemvenuti,Renata; Nora,Náthali Saião; Badiale-Furlong,Eliana. |
| γ-oryzanol, a phytochemical, has antioxidant activities and potential health benefits. In this study, we aimed to develop a method for extracting high amounts of γ-oryzanol from rice bran and for verifying its stability in different solvents. Of the 5 methods under investigation, the one that yielded the highest γ-oryzanol content was further improved by using a central composite rotational design (DCCR - 2(4), including 8 tests in axial conditions and 4 central points, totaling 28 trials). The parameters under study were temperature, time, volume, and the ratio of hexane:isopropanol. High γ-oryzanol content (13.98 mg.g-1) was obtained by using the following extraction conditions: 40° C, 40 min, and 75 mL hexane:isopropanol (1:3). The limits of detection... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant; Spectrophotometer; Stability; Phytochemistry. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000600008 |
| |
|
|
| Souza,Michele Moraes de; Prietto,Luciana; Ribeiro,Anelise Christ; Souza,Taiana Denardi de; Badiale-Furlong,Eliana. |
| The production of safe food has stimulated the search for natural substances that possess antifungal activity. The indirect methods of estimating fungal biomass are based on the measurement of glucosamine, ergosterol and protein - typical compounds produced during the development of biomass. The aim of the study was to assess the effect of the phenolic extract from Spirulina platensis on the production of structural compounds in Aspergillus flavus, in order to identify its action on fungal inhibition. The Spirulina platensis methanolic extracts presented 1.15 mg phenolic compound/g Spirulina platensis, which showed an antifungal effect against Aspergillus flavus, inhibiting the glucosamine production up to 56%. Therefore, it may be employed as natural... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phenolic inhibitors; Antifungal property; Glucosamine; Protein; Ergosterol. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600003 |
| |
|
|
| Garda,Jaqueline; Macedo,Rejane Martins; Badiale-Furlong,Eliana. |
| Este trabalho adaptou um método e avaliou os seus indicadores de mérito para determinação de tricotecenos, desoxinivalenol (DON) e toxina T-2, em cervejas comercializadas na região Sul do Rio Grande do Sul, empregando cromatografia gasosa. As adaptações foram realizadas na etapa de extração, purificação, derivação e condições cromatográficas usando amostras de cerveja artificialmente contaminadas, avaliando a adequação do procedimento pela recuperação obtida. Foram estudados os solventes acetonitrila, metanol e cloreto de metileno puro ou em misturas para a etapa de extração. A purificação do extrato foi realizada empregando ou não minicoluna de carvão:alumina:celite (7:5:3). Para a derivação testou-se basicidade do meio (bicarbonato de sódio, piridina),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tricotecenos; Cervejas; Desoxinivalenol; Toxina T-2; Cromatografia gasosa. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612004000400030 |
| |
|
|
| Pagnussatt,Fernanda Arnhold; Kupski,Larine; Darley,Francine Toralles; Filoda,Paula Freitas; Ponte,Émerson Medeiros Del; Garda-Buffon,Jaqueline; Badiale-Furlong,Eliana. |
| The application of natural antifungal substances is motivated by the need for alternatives to existing methods that are not always applicable, efficient, or that do not pose risk to consumers or the environment. Furthermore, studies on the behaviour of toxigenic species in the presence of natural fungicides have enabled their safe application in the food chain In this study, Spirulina LEB-18 phenolic extract was assessed for its antifungal activity on 12 toxigenic strains of Fusarium graminearum isolated from barley and wheat. The susceptible metabolic pathways were assessed through the determination of structural compounds (glucosamine and ergosterol) and enzyme activity of the microorganisms' primary metabolism. The results indicate that phenolic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural antifungal agent; Structural compounds; Enzymes. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000500012 |
| |
|
| |
|
|
| Dors,Giniani Carla; Pinto,Renata Heidtmann; Badiale-Furlong,Eliana. |
| O objetivo deste trabalho foi avaliar a influência de diferentes tempos de maceração e autoclavagem, durante o processo de parboilização, na composição química do arroz parboilizado. Uma amostra de arroz verde, com casca e seca, foi submetida ao processo de parboilização segundo um planejamento fatorial 2² com ponto central, tendo como variáveis o tempo de maceração (4, 5 e 6 horas) e o tempo de autoclavagem (15, 22.5 e 30 minutos). Após a secagem, a amostra foi beneficiada em miniengenho, separando-se a casca juntamente com o farelo e o endosperma amiláceo. Todas as porções foram trituradas e peneiradas, recolhendo-se as porções que passaram através de 0,5 mm para serem caracterizadas quanto aos teores de umidade, cinzas, proteínas, fibras, amilose e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arroz parboilizado; Composição química; Tempo de maceração; Tempo de autoclavagem. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612009000100034 |
| |
|
| |
|
|
| Mendes,Gabriela da Rocha Lemos; Reis,Tatiana Alves dos; Corrêa,Benedito; Badiale-Furlong,Eliana. |
| Although fumonisin B1 (FB1) is a mycotoxin poorly studied in wheat, the Fusarium genus fungi have been frequently detected in this cereal, especially in subtropical regions such as southern Brazil, thus studies on their occurrence are required. This study evaluated the mycobiota, water activity and the presence of FB1 in 11 wheat cultivars grown in the northeastern and northwestern of Rio Grande do Sul. The mycobiota was identified by morphological and molecular techniques and FB1 was determined by liquid chromatography with fluorescence detection (HPLC-FL). Microbial counts lower than 103CFU were found in the samples, and the fungi genera Phoma, Cladosporium and Fusarium were the most frequent. Despite this, 54% of the samples were contaminated with FB1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fusarium; FB1; Triticum aestivum L.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000601050 |
| |
|
| |
| Registros recuperados: 12 | |
|
|
|
