A5057621438- Essential Oils and Antimicrobial Activity
- Bee Products Chemical Analysis
- Biofuel production and bioconversion
- Phytochemistry Medicinal Plant Applications
- Insect and Pesticide Research
- Enzyme-mediated dye degradation
- Dyeing and Modifying Textile Fibers
- Enzyme Catalysis and Immobilization
- Microbial Metabolism and Applications
- Geography and Environmental Studies
- Fish biology, ecology, and behavior
- Obesity, Physical Activity, Diet
- Advanced Cellulose Research Studies
- Complementary and Alternative Medicine Studies
- Enzyme Production and Characterization
- Botanical Research and Applications
- Academic Research in Diverse Fields
- Biodiesel Production and Applications
- Groundwater and Watershed Analysis
- Banana Cultivation and Research
- Analytical chemistry methods development
- Ethnobotanical and Medicinal Plants Studies
- Natural Antidiabetic Agents Studies
- Plant and animal studies
- Pesticide Residue Analysis and Safety
Universidade Regional de Blumenau
2008-2024
University of Hohenheim
2024
Polydoro Ernani de São Thiago University Hospital
2013
Universidade Federal de Santa Catarina
2011
Propolis is a rich source of bioactive molecules made by bees collecting an infinite variety secondary metabolites from plants. This study determined the chromatographic and mass spectrometry profile along with biological activity propolis produced native Brazilian bee Melipona quadrifasciata. A hydroalcoholic crude extract was prepared partitioned in solvents different polarities, generating aqueous, dichloromethane, ethyl acetate, butanol insoluble fractions. The phenolic flavonoid content...
The fixed oil from the inner mesocarp of Caryocar coriaceum Wittm. is used in Chapada do Araripe region Brazil for treatment genitourinary candidiasis. This study aimed to evaluate chemical composition, antifungal activity, reduction fungal virulence, and preliminary toxicity C. tested against three Candida yeasts. was characterized by gas chromatography (GC-MS GC-FID). Antifungal activity assessed using serial microdilution method. Additionally, potential as an enhancer fluconazole action...
New cellulases from the fungi Acrophialophora nainiana and Penicillium echinulatum were used in finishing of knitted cotton fabrics (biopolishing) compared with well established enzymes Trichoderma reesei. Both reduced pilling tendency a lower weight loss than T. reesei cellulases. Cellulases P. also studied stonewashing denim to obtain fashionable aged look indigo dyed jeans ware found remove more colour produce less dye redeposition (back-staining) commercial acid or neutral under test...
Cellulases are widely applied in textile finishing, such as for the removal of protruding surface fibrils to reduce pilling propensity and achieve worn‐out look denim garments. The main drawback enzymatic processing is back‐staining indigo, which reduces desired blue–white contrast. Alongside an accurate selection type cellulase or vigorous post‐washing garments, simultaneous application auxiliaries treatment may help improve efficiency. In present work, influence additives surfactants...
We aimed to characterize and investigate the antibacterial potential of native stingless bees geopropolis volatile oils (VO) for search potentially new bioactive compounds. Geopropolis samples from Melipona bicolor schencki, M. compressipes manaosensis, fasciculata, quadrifasciata, marginata seminigra merrillae were collected hives in South Brazil. VO obtained by hydrodistillation characterised gas chromatography coupled mass spectrometry (GC/MS). Antimicrobial activity was assessed...
The filamentous fungus Acrophialophora nainiana, isolated from a hot spring in Brazil, was grown liquid culture on different cellulosic and lignocellulosic carbon sources for seven days enzyme extracts were characterised with respect to their carbohydrase activity profile. obtained growing A. nainiana cellulose, dirty-cotton residue, sugarcane bagasse banana stem used the hydrolysis of untreated (UT), pre-treated by steam explosion (SET) acid-catalysed (SAT). profile preparations varied...
Abstract Hydroalcoholic propolis extracts from the bee species Melipona quadrifasciata have been shown to possess antimicrobial activity against different mollicute strains, but a methanolic extract (ME) could contain an increased diversity of nonpolar bioactive components with potentially higher activity. The ME obtained by maceration sample was fractionated solvents polarities and then, purified silica gel column chromatography through biomonitoring its strains. Analysis gas...
The characterization of cellulases is complex and has gained increasing importance due to the application in finishing textile fibres conversion lignocellulose into second generation ethanol. Usually two or three different substrates such as filter paper Whatman No. 1, carboxymethylcellulose avicel are used characterize total, endo (EG) exoglucanase (ExG) activity, respectively, assays carried out without any mechanical agitation. Unfortunately, activities obtained not directly comparable do...
Os biomarcadores geoquimicos sao compostos presentes na geosfera e estao relacionados com os precursores biologicos especificos, permitindo obter informacoes sobre as mudancas ambientais que ocorreram ou ainda ocorrem nos ecossistemas aquaticos suas vizinhancas. A Lagoa do Ribeirao, localizada no municipio de Paulo Lopes, SC, o sistema aquatico avaliado neste trabalho atraves salinidade, principalmente. dados obtidos indicam a predominância ambiente marinho, quando nivel relativo mar estava...
Background: Oral traditional knowledge disseminates the use of young leaves Vernonanthura tweediana (Asteraceae) as poultice in feverish cases among family farmers Santa Catarina, Brazil, but there is a lack phytochemistry and pharmacological studies on this species, especially those related to volatile organic compounds. Methods: In present study, dry V. were subjected hydrodistillation for extraction essential oil. Sample characterization was conducted using GC-FID GC-MS. To evaluate...