A5039605684- Fermentation and Sensory Analysis
- Phytochemicals and Antioxidant Activities
- Horticultural and Viticultural Research
- Isotope Analysis in Ecology
- Antioxidant Activity and Oxidative Stress
- Biochemical and biochemical processes
- Metabolomics and Mass Spectrometry Studies
- Advanced Chemical Sensor Technologies
- Meat and Animal Product Quality
- Dye analysis and toxicity
- Plant biochemistry and biosynthesis
- Wine Industry and Tourism
- Bee Products Chemical Analysis
- Food Allergy and Anaphylaxis Research
- Food Quality and Safety Studies
- Tea Polyphenols and Effects
- Medicinal Plant Extracts Effects
- Genomics and Phylogenetic Studies
- Carbon dioxide utilization in catalysis
- Pomegranate: compositions and health benefits
- Essential Oils and Antimicrobial Activity
- Aluminum toxicity and tolerance in plants and animals
- GABA and Rice Research
- Geology and Paleoclimatology Research
- Natural product bioactivities and synthesis
Universidade de Caxias do Sul
2010-2023
Fundação Getulio Vargas
2016
Instituto Brasileiro de Museus
2016
Instituto Rio Grandense do Arroz
2010
Sciences pour L’Œnologie
2005
Université de Montpellier
2005
Université de Bordeaux
2005
Eindhoven University of Technology
2005
Pontifícia Universidade Católica do Rio Grande do Sul
2000
Universidade Federal de Santa Catarina
1995
Phenolics from grapes and wines can play a role against oxidation development of atherosclerosis. Stilbenes have been shown to protect lipoproteins oxidative damage cancer chemopreventive activity. We describe method for the direct determination stilbenes in several red using high-performance liquid chromatography with UV detection. In survey 12 commercial south Brazil (Rio Grande del Sul), levels delta-viniferin are reported first time different varieties wines. Brazilian wine contains...
Epilepsy is the most common neurological disorder worldwide. Studies have shown that recurrent seizures may increase concentration of reactive oxygen species, which can lead to oxidative stress and neuronal damage. These result in substantial deleterious effects on an individual's health. Organic conventional grape juices are rich polyphenols, compounds with important antioxidant activity. However, these could differences their polyphenol content. The aim this study was investigate...
Supercritical fluid extraction has been widely employed in the of high purity substances. In this study, we used technology to obtain oil from seeds a variety grapes, vinification residues generated Southern region state Rio Grande do Sul, Brazil. This work encompasses three varieties Vitis vinifera (Moscato Giallo, Merlot, and Cabernet Sauvignon) two labrusca (Bordô e Isabel), harvested 2005 2006. We obtained highest content Bordô (15.40%) Merlot (14.66%), The biggest concentration...
Sparkling wines (SW) have a special biological ageing on lees that is performed using two distinct methods: in the bottle (Champenoise) or isobaric tanks (Charmat method). The objective of this study was to compare levels phenolic compounds, β-Glucosidase and antioxidant activity during lees, samples SW produced at industrial scale by both methods. has been constant over time, showing close relationship with all polyphenols studied (resveratrol, piceid, tyrosol, gallic, caffeic ferulic...
The effects of a white wine enriched with polyphenols (PEWW) from Chardonnay grapes and sparkling red (SRW) Pinot Noir were studied for the first time on early atherosclerosis in hamsters. Animals fed an atherogenic diet 12 weeks. They received by force-feeding PEWW, SRW, ethanol 12% (ETH), or water as control (mimicking moderate consumption ∼2 glasses per meal 70 kg human). Plasma cholesterol concentrations lower groups that consumed PEWW SRW accompanied increase ratio apo A-1/apo B....
Oxidative damages in hepatocytes may be caused by epilepsy and/or anticonvulsant drugs. Epilepsy is one of the most common neurological disorders, characterized recurrent seizures, which increase content reactive oxygen species. Organic and conventional grape juices are rich polyphenols, compounds with important antioxidant activity. It hypothesized that organic purple have protective effect against oxidative damage induced pentylenetetrazole (PTZ) (a standard convulsant drug) liver serum...
There are many studies related to the antioxidant activity of grape products; however, they concern only purple and white varieties. Up now, there no reports on Goethe rose variety, either its or phenolic mineral quantification. Thus, purpose this study was evaluate in vitro vivo activity, as well quantify total compounds, ascorbic acid, content, a juice. The results obtained showed that juice is great polyphenol source, which contains catechin, epicatechin, procyanidins (B1, B2, B3, B4). Of...
It has been suggested that the dietary intake of antioxidant supplements could be a useful strategy to reduce incidence diseases associated with oxidative stress. The aim present work is study possibility obtain compounds activity from wine wastes using water as solvent. Results have shown it possible flavan-3-ol both V. vinifera (cv. Cabernet Sauvignon and Merlot) labrusca Bordo Isabella) species. main phenolic found in extracts were catechin epicatechin, followed by procyanidin B3, B1, B2,...
Abstract We present a method that can differentiate between the varieties of grapes and vintages wines show relationship grapes, wine geographic location. The place origin its climatic characteristics were determined by isotopic ratios, 13 C/ 12 C ethanol 18 O/ 16 O water content (wine water), for southern Brazil wines. producing subregions Pinto Bandeira, Vale dos Vinhedos Nova Pádua showed differences in temperature, rainfall humidity conditions used production under microvinification...
Baccharis dracunculifolia, "Vassoura", is a shrub with spontaneous occurrence in Brazil, Uruguay, Argentina, Paraguay, and Bolivia. The Vassoura oil, valuable the perfumery industry for its exotic aroma, presents variations composition depending on geographical origin extraction process. commercial importance related to oxygenated fraction content, specifically (E)-nerolidol spathulenol. In this work we study dependence of oil composition, obtained by supercritical CO2 (SCCO2) extraction,...
Traditional winegrowing areas are located in temperate climate zones and allow to produce grapes only once per year. Tropical wines have been elaborated India, Thailand, Venezuela Brazil present another kind of viticulture, as compared with countries zones. Northeast started wine production twenty six years ago. This region vines can two or three crops year, depending the cycle different cultivars. Harvests be scaled throughout mainly between May December, corresponding dry season. Red,...
Abstract The oil from leaves of Salvia guaranitica Benth. accessions southern Brazil obtained by hydrodistillation is reported. GC–MS analyses revealed sesquiterpene‐rich oils characterized high concentrations germacrene D, β ‐caryophyllene and δ ‐cadinene. Qualitative quantitative differences were observed among the accessions, enabling them to be assigned three clusters. Copyright © 2007 John Wiley & Sons, Ltd.
Abstract The consumption of grape juice has been growing significantly, so its quality is becoming an issue great importance, both for the consumer and industry. However, identifying adulteration in a challenge requires reliable analytical process. isotope ratio (18O/16O) important tool to determine addition exogenous water beverages, however, there no official method Brazil. This study aimed develop validate detecting through isotopic analysis 18O/16O. development validation were performed...