RSS 1.0Departamento de Química Orgânica
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Biohydrogen production in an integrated biosystem using crude glycerol from waste cooking oils
Rodrigues, Caroline Varella
; Rios Alcaraz, Francisco Abraham ; Nespeca, Maurílio Gustavo ; Rodrigues, Aline Varella ; ; ; ; Maintinguer, Sandra Imaculada (Renewable Energy, 2020) [Artigo]
Biohydrogen production was evaluated in an integrated biosystem, using both dark and photo fermentation, using crude glycerol (CG) derived from the production of biodiesel from waste cooking oils (WCO). The dark fermentation ... -
Application of electromagnetic field in anaerobic biodigestion in batch reactors
de Souza Matos, Julios César; Rozenský, Ladislav ; Vrba, Zdeněk ; Hansen, Justin Michael ; Hájek, Miroslav ; Lípa, Jan ; Rodrigues, Caroline Varella ; Luz, Fernanda Giffoni Fernandes ; de Castro, Marcus César Avezum Alves ; Maintinguer, Sandra Imaculada (BioResources, 2020) [Artigo]
Anaerobic digestion processes with biogas production are widely used for organic waste treatment with an emphasis on energy recovery. Some recent studies have demonstrated the influence of magnetism on microbiological ... -
Effects of temperature, proportion and organic loading rate on the performance of anaerobic digestion of food waste
Blasius, Jandir Pereira; ; Maintinguer, Sandra Imaculada ; Alves de Castro, Marcus Cesar Avezum (Biotechnology Reports, 2020) [Artigo]
In Brazil, a significant amount of organic waste is produced in households and restaurants. This study thus aimed to determine the ideal conditions for generating methane from the treatment of household waste by anaerobic ... -
Potential prophylactic role of silicon against brown rust (Puccinia melanocephala) in sugarcane
; Coutinho, Isabel D.; ; ; ; ; Cavalheiro, Alberto J. ; (European Journal of Plant Pathology, 2020) [Artigo]
Some benefits of silicon (Si) fertilization have been reported in sugarcane plants, but information about the effects of Si on brown rust (Puccinia melanocephala) remain scarce, even though this plant disease is widespread ... -
Energy valorization of crude glycerol and sanitary sewage in hydrogen generation by biological processes
Varella Rodrigues, Caroline; Oliveira Santana, Kamili ; Nespeca, Maurílio Gustavo ; Varella Rodrigues, Aline ; Oliveira Pires, Lorena ; Maintinguer, Sandra Imaculada (International Journal of Hydrogen Energy, 2020) [Artigo]
Biohydrogen production was studied with increased concentrations of crude glycerol (CG) co-digested with sanitary sewage by anaerobic consortium bacteria in anaerobic batch reactors, at 30 °C and initial pH 7.0. The CG was ... -
The new koninginins T-U from Phomopsis stipata, an endophytic fungus isolated from Styrax camporum Pohl
Biasetto, Carolina R.; Somensi, Andressa ; Sordi, Renata ; ; ; ; ; Bolzani, Vanderlan da S. ; ; et al. (Phytochemistry Letters, 2020) [Artigo]
Two new polyketides, named koninginin T (1) and U (2), were isolated from Phomopsis stipata - an endophytic fungus isolated from Styrax camporum Pohl. The structures of polyketides 1 and 2 were defined through the analysis ... -
Authentication of roasted and ground coffee samples containing multiple adulterants using NMR and a chemometric approach
Milani, Maria Izabel; Rossini, Eduardo Luiz ; Catelani, Tiago Augusto ; Pezza, Leonardo ; ; Pezza, Helena Redigolo (Food Control, 2020) [Artigo]
Brazil is still the world's largest producer and exporter of coffee. In order to maximize profits, some producers may add lower cost materials (such as corn, barley, or even coffee husks) to commercial coffee. In view of ... -
Spirocyclic lactams and curvulinic acid derivatives from the endophytic fungus Curvularia lunata and their antibacterial and antifungal activities
Hilario, Felipe; Polinário, Giulia ; de Amorim, Marcelo Rodrigues ; de Sousa Batista, Victor ; do Nascimento Júnior, Nailton Monteiro ; Araújo, Angela Regina ; Bauab, Taís Maria ; dos Santos, Lourdes Campaner (Fitoterapia, 2020) [Artigo]
Curvularia lunata, isolated from the capitula of Paepalanthus chiquitensis (Eriocaulaceae), was cultured in potato dextrose broth (PDB) medium. The ethyl acetate extract yielded two new spirocyclic γ-lactams (3 and 4), and ... -
Linear peptide analogues from Jatropha's orbitides promote migration of human neonatal foreskin fibroblasts in vitro and collagen deposition
Ramalho, Suelem D.; Pinto, Meri Emili F. ; ; Sanches, Paulo R. S. ; ; Cilli, Eduardo M. ; ; Bolzani, Vanderlan S. (Journal of the Brazilian Chemical Society, 2019) [Artigo]
Orbitides are a class of small naturally occurring cyclic peptides with structural and functional diversities. Their chemical properties make this class feasible to be obtained by solid phase peptide synthesis (SPPS). ... -
Bioactive paper platform for detection of hydrogen peroxide in milk
Lima, Liliane Spazzapam; Rossini, Eduardo Luiz ; Pezza, Leonardo ; Pezza, Helena Redigolo (Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 2020) [Artigo]
This paper describes the development and application of a paper-based analytical device (μPAD) for the determination of hydrogen peroxide, an important adulterant in milk. The method employs the reaction between hydrogen ... -
Phytochemical, metabolic profiling and antiparasitic potential from Inga semialata leaves (Fabaceae)
Lima, Nerilson M.; de Marqui, Sara R. ; ; Silva, Dulce H. S. (Natural Product Research, 2020) [Artigo]
Natural Products phytochemical provide a rich source for therapeutic discovery and has led to the development of many drugs. Thus, the aim of this study was to obtaining a metabolic profiling from ethanol extract of Inga ... -
Citrinin against breast cancer: A cytogenotoxicological study
; ; ; ; Silva, Dulce Helena Siqueira; ; ; ; ; et al. (Phytotherapy Research, 2020) [Artigo]
Breast cancer is one of the most lethal types of cancer and a leading cause of mortality among Women worldwide. Citrinin (CIT), a polyketide extracted from the fungus Penicillium citrinum, exhibits a wide range of biological ... -
The Postbiotic Activity of Lactobacillus paracasei 28.4 Against Candida auris
Rossoni, Rodnei Dennis; de Barros, Patrícia Pimentel ; Mendonça, Iatã do Carmo ; Medina, Rebeca Previate ; Silva, Dulce Helena Siqueira ; ; Junqueira, Juliana Campos ; (Frontiers in cellular and infection microbiology, 2020) [Artigo]
Candida auris has emerged as a medically important pathogen with considerable resistance to antifungal agents. The ability to produce biofilms is an important pathogenicity feature of this species that aids escape of host ... -
Acetylcholinesterase inhibition and antifungal activity of cyclohexanoids from the endophytic fungus Saccharicola sp.
; Honório, Alana E.; ; ; ; ; Pavan, Fernando R. ; Cicarelli, Regina M. ; ; Bolzani, Vanderlan da S. et al. (Phytochemistry Letters, 2020) [Artigo]
Three new oxygenated cyclohexanoids, namely, speciosin U (1), speciosin V (2) and speciosin W (3), along with four known compounds consisting of 4-hydroxy-3-(3′-methylbut-3′-en-1′-ynyl)-benzoic acid (4), 4-hydroxy-3-prenyl-benzoic ... -
Streptococcus mutans Secreted Products Inhibit Candida albicans Induced Oral Candidiasis
dos Santos, Jéssica Diane; Fugisaki, Luciana Ruano de Oliveira ; Medina, Rebeca Previate ; Scorzoni, Liliana ; Alves, Mariana de Sá ; de Barros, Patrícia Pimentel ; Ribeiro, Felipe Camargo ; ; ; Silva, Dulce Helena Siqueira et al. (Frontiers in Microbiology, 2020) [Artigo]
In the oral cavity, Candida species form mixed biofilms with Streptococcus mutans, a pathogenic bacterium that can secrete quorum sensing molecules with antifungal activity. In this study, we extracted and fractioned culture ... -
Pleurotusostreatus and Agaricus subrufescens: investigation of chemical composition and antioxidant properties of these mushrooms cultivated with different handmade and commercial supplements
; ; Mannochio Russo, Helena; de Carvalho Bertozo, Luiza ; da Silva Bolzani, Vanderlan ; Cunha Zied, Diego ; Farias Ximenes, Valdecir ; (International Journal of Food Science and Technology, 2020) [Artigo]
In this study, the chemical composition, total phenolic content and antioxidant activity (DPPH, ORAC and FRAP assays) of A. subrufescens and P. ostreatus, cultivated with handmade and commercials supplements, were compared. ... -
Cytogenotoxic evaluation of the acetonitrile extract, citrinin and dicitrinin-A from Penicillium citrinum
; ; ; Silva, Dulce Helena Siqueira; ; ; ; ; ; et al. (Drug and Chemical Toxicology, 2020) [Artigo]
Endophytic fungi are promising sources of bioactive substances; however, their secondary metabolites are toxic to plants, animals, and humans. This study aimed toevaluate the toxic, cytotoxic, mutagenic and oxidant/antioxidant ... -
A seed-specific regulator of triterpene saponin biosynthesis in medicago truncatula
; ; Bicalho, Keylla U.; ; ; ; ; ; ; et al. (Plant Cell, 2020) [Artigo]
Plants produce a vast array of defense compounds to protect themselves from pathogen attack or herbivore predation. Saponins are a specific class of defense compounds comprising bioactive glycosides with a steroidal or ... -
Crotalaria spectabilis as a source of pyrrolizidine alkaloids and phenolic compounds: HPLC-MS/MS dereplication and monocrotaline quantification of seed and leaf extracts
; ; ; da Silva Bolzani, Vanderlan; ; ; ; (Phytochemical Analysis, 2020) [Artigo]
Introduction: Crotalaria spectabilis is an important species used as a pre-plant cover for soybean crops to control the proliferation of endoparasitic nematodes. Species from the Crotalaria genus are known for presenting ... -
Syngonanthus nitens (Bong.) ruhland derivatives loaded into a lipid nanoemulsion for enhanced antifungal activity against candida parapsilosis
de Lima, Laura C.; Ramos, Matheus A. S. ; de Toledo, Luciani G. ; Rodero, Camila F. ; Hilário, Felipe ; Dos Santos, Lourdes C. ; Chorilli, Marlus ; Bauab, Taís M. (Current Pharmaceutical Design, 2020) [Artigo]
Background: Vaginal infections caused by non-albicans species have become common in women of all age groups. The resistance of species such as Candida parapsilosis to the various antifungal agents is a risk factor attributed ...