14 documents found, page 1 of 2
Genome-wide identification and expression analysis of dormancy-associated gene ...
Souza, Gilza Barcelos de; Mendes, Tiago Antônio de Oliveira; Fontes, Patrícia Pereira; Barros, Vanessa de Almeida; Gonçalves, Amanda BonotoDormancy-Associated gene 1/Auxin Repressed protein (DRM1/ARP) genes are responsive to hormones involved in defense response to biotic stress, such as salicylic acid (SA) and methyl jasmonate (MeJA), as well as to hormones that regulate plant growth and development, including auxins. These characteristics suggest that this gene family may be an important link between the response to pathogens and plant growth an...
Antioxidant study indicative of antibacterial and antimutagenic activities of a...
Diaz, Marisa Alves Nogueira; Fietto, Luciano Gomes; Leite, João Paulo Viana; Gontijo, Douglas Costa; Gontijo, Pablo Costa; Brandão, Geraldo CélioEthnopharmacological relevance; Several plant species of Miconia genus are commonly used in Brazilian folk medicine as anti-inflammatory agents and for the treatment of infectious diseases. Infusions and extracts of Miconia species are also reported as analgesic, antimicrobial, antimalarial, antioxidant, anti-inflammatory, antinociceptive, antimutagenic, and antitumoral. To determine the phytochemical compositi...
Screening of yeasts isolated from brazilian environments for the 2-Phenylethano...
Lima, Lorena Azevedo de; Diniz, Raphael Hermano Santos; Queiroz, Marisa Vieira de; Fietto, Luciano Gomes; Silveira, Wendel Batista daPhenylethanol alcohol, or 2-phenylethanol (2-PE) production by yeasts has been considered a promising alternative to its chemical synthesis. In order to evaluate the potential of yeast strains isolated from different Brazilian environments, we evaluated the 2-PE production of 267 strains. Among them, the Kluyveromyces marxianus CCT 7735 yeast stood out as being the best 2-PE producer. The K. marxianus CCT 7735 ...
Protective effect of ions against cell death induced by acid stress in Saccharo...
Sant’Ana, Gilzeane dos Santos; Paes, Lisvane da Silva; Paiva, Argentino F. Vieira; Fietto, Luciano Gomes; Totola, Antônio HelvécioSaccharomyces boulardii is a probiotic used to prevent or treat antibiotic-induced gastrointestinal disorders and acute enteritis. For probiotics to be effective they must first be able to survive the harsh gastrointestinal environment. In this work, we show that S. boulardii displayed the greatest tolerance to simulated gastric environments compared with several Saccharomyces cerevisiae strains tested. Under t...
Optimizing ethanol production by thermotolerant Kluyveromyces marxianus CCT 773...
Ferreira, Priscila Gonçalves; Silveira, Fernando Augusto da; Santos, Raquel Cristina Vieira dos; Genier, Hugo Leonardo AndréThe simultaneous saccharification and fermentation (SSF) process is a promising strategy to obtain ethanol from cellulosic biomass. In this study, sugarcane bagasse was supplemented with ricotta whey to increase the sugar, vitamin, and trace metal concentrations in the fermentation medium. The optimum conditions for SSF ethanol production from a mixture of sugarcane bagasse and ricotta whey produced by Kluyvero...
Optimizing ethanol production by thermotolerant Kluyveromyces marxianus CCT 773...
Ferreira, Priscila Gonçalves; Silveira, Fernando Augusto da; Santos, Raquel Cristina Vieira dos; Genier, Hugo Leonardo AndréThe simultaneous saccharification and fermentation (SSF) process is a promising strategy to obtain ethanol from cellulosic biomass. In this study, sugarcane bagasse was supplemented with ricotta whey to increase the sugar, vitamin, and trace metal concentrations in the fermentation medium. The optimum conditions for SSF ethanol production from a mixture of sugarcane bagasse and ricotta whey produced by Kluyvero...
Identification of phenolic compounds and biologically related activities from O...
Gontijo, Douglas Costa; Brandão, Geraldo Célio; Gontijo, Pablo Costa; Oliveira, Alaíde Braga de; Diaz, Marisa Alves Nogueira; Fietto, Luciano GomesOcotea odorifera (Vell.) Rohwer is popularly used as food and flavoring. The aim of this study was to determine the chemical composition of the aqueous extract from O. odorifera leaves and evaluate the correlation of their phytochemical composition and biological activities. The antioxidant effect was determined by DPPH radical scavenging, β-carotene-linoleic acid and lipid peroxidation assays; the antibacteria...
Strategies to select yeast starters cultures for production of flavor compounds...
Souza, Anderson Proust Gonçalves de; Vicente, Maristela de Araújo; Klein, Raphael Contelli; Fietto, Luciano Gomes; Coutrim, Maurício XavierIn this work, we have used classical genetics techniques to find improved starter strains to produce cachaça with superior sensorial quality. Our strategy included the selection of yeast strains resistant to 5,5′,5″-trifluor-d,l-leucine (TLF) and cerulenin, since these strains produce higher levels of higher alcohols and esters than parental strains. However, no clear relationship was observed when levels of fl...
Colleters in Bathysa cuspidata (Rubiaceae): Development, ultrastructure and che...
Coelho, Victor Peçanha de Miranda; Leite, João Paulo Viana; Fietto, Luciano Gomes; Ventrella, Marília ContinThis paper describes the development of colleters of Bathysa cuspidata, Rubiaceae, considering anatomical, histochemical and ultrastructural aspects and going from first differentiation stages until senescence. Further, the chemical composition of the secretion is investigated. The samples were prepared according to the usual techniques for light microscopy and scanning and transmission electron microscopy. Ele...
Identification of phenolic compounds and biologically related activities from O...
Gontijo, Douglas da Costa; Brandão, Geraldo Célio; Gontijo, Pablo Costa; Oliveira, Alaíde Braga de; Diaz, Marisa Alves Nogueira; Fietto, Luciano GomesOcotea odorifera (Vell.) Rohwer is popularly used as food and flavoring. The aim of this study was to determine the chemical composition of the aqueous extract from O. odorifera leaves and evaluate the correlation of their phytochemical composition and biological activities. The antioxidant effect was determined by DPPH radical scavenging, b-carotene-linoleic acid and lipid peroxidation assays; the antibacteria...