A5005771653- Phytochemicals and Antioxidant Activities
- Antioxidant Activity and Oxidative Stress
- Fermentation and Sensory Analysis
- Horticultural and Viticultural Research
- Algal biology and biofuel production
- Phytochemistry Medicinal Plant Applications
- Microbial Metabolites in Food Biotechnology
- Botanical Research and Applications
- Essential Oils and Antimicrobial Activity
- Microbial Metabolism and Applications
- Bee Products Chemical Analysis
- Pomegranate: compositions and health benefits
- Aquatic Ecosystems and Phytoplankton Dynamics
- Enzyme Catalysis and Immobilization
- GABA and Rice Research
- Nutritional Studies and Diet
- Marine and coastal ecosystems
- Enzyme Production and Characterization
- Agricultural and Food Sciences
- Tea Polyphenols and Effects
- Photosynthetic Processes and Mechanisms
- Insect and Pesticide Research
- Meat and Animal Product Quality
- Probiotics and Fermented Foods
- Psidium guajava Extracts and Applications
Universidade Federal do Rio Grande do Sul
2016-2025
Universidade Estadual de Campinas (UNICAMP)
2009-2014
Hospital de Clínicas da Unicamp
2012
Universidade Federal de Santa Catarina
2007-2011
Departamento de Ciência e Tecnologia
2008
The phenolic compounds content and antioxidant activity of pomace from the vinification grape varieties widely produced in Brazil (Cabernet Sauvignon, Merlot, Bordeaux Isabel) were investigated with a view to their exploitation as potential source natural antioxidants. Cabernet Sauvignon was found have highest total (74.75 mg gallic acid equivalent (GAE)/g), (determined using 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical...
Fruits from the Atlantic Forest have received increasing interest because they contain high levels of bioactive compounds with notable functional properties. The composition carotenoids and phenolic fruits found in (jussara, uvaia, araça, grumixama) was determined by high-performance liquid chromatography coupled to diode array mass spectrometry detectors. Uvaia showed highest (1306.6 μg/100 g fresh matter (f.m.)). Gallic acid major compound araça (12.2 mg GAE/100 f.m.) uvaia (27.5 f.m.). In...
Carotenoid intake has been associated with the decrease of incidence some chronic diseases by minimizing in vivo oxidative damages induced reactive oxygen (ROS) and nitrogen species (RNS). The carotenoids are well-known singlet quenchers; however, their capacity to scavenge other species, such as peroxyl radical (ROO•), hydroxyl (HO•), hypochlorous acid (HOCl) anion peroxynitrite (ONOO−), still needs be more extensively studied, especially using membrane-mimicking systems, liposomes....
The extraction of blueberry anthocyanins with natural deep eutectic solvents (NADES) based on choline chloride:glycerol:citric acid was optimized by simplex centroid design to find the best molar ratio for solvent. Choline at 0.5:2:0.5 (NADES 6) optimal NADES extraction. 6 as efficient conventional organic solvent (methanol:water:formic acid) when compared same sample:solvent and yielded about 76 % an exhaustive higher proportion arabinoside lower galactoside than Thus, can be assumed a...
Jaboticaba peel powder (JPP) digestion was investigated for the first time using an in vitro static model of gastrointestinal associated with a colonic fermentation assay human feces to elucidate catabolism and bioaccessibility fruit polyphenols. Anthocyanins had low (0.08–2.3%). Most hydrolyzable tannins (1.2–166.0%) flavonols (0–36.8%) greater than anthocyanins. Despite their (0.08–2.3%), anthocyanins were most abundant polyphenols JPP bioaccessible intestinal fraction followed by tannins....
The composition of carotenoids and phenolic compounds from mana-cubiu (Solanum sessiliflorum), a fruit native to Amazonia, was determined by high-performance liquid chromatography coupled diode array mass spectrometry detectors (HPLC-DAD-MS(n)). antioxidant capacities the hydrophilic carotenoid extracts against some reactive oxygen (ROO(•), H(2)O(2), HOCl, HO(•)) nitrogen (ONOO(-)) species were also determined. Seventeen three found in mana-cubiu. major (all-E)-β-carotene (7.15 μg/g dry...
Jaboticaba, a polyphenol-rich fruit, has numerous nutraceutical properties. Studies on jaboticaba composition have focused solvent-extractable polyphenol compounds, whereas the matrix-bound polyphenols that can be delivered during digestion been neglected. This study aimed to characterize profiling of and free phenolic compounds in Jaboticaba peel powder (JPP) using two fruit species, Myrciaria (JPP-MJ) M. trunciflora (JPP-MT). An HPLC-DAD-MS/MS method was developed validated analyze JPP...
The phenolic composition, antioxidant capacity and bioaccessibility of the minerals thirteen honey samples from nine different species stingless bees (Meliponinae) were determined in this study. Twenty-six compounds found. major salicylic acid (8.02–94.8 μg 100 g1), p-coumaric (4.54–64.3 naringin (4.00–32.0 g1) taxifolin (12.0–1920 g1). Moreover, presence mandelic acid, caffeic chlorogenic rosmarinic aromadendrin, isoquercetrin, eriodictyol, vanillin, umbelliferone, syringaldehyde,...
Whey protein isolate (WPI) interactions with (-)-epigallocatechin gallate (EGCG) and caffeic acid (CA) at pH 3.5 7.0 were investigated concerning complex formation antioxidant capacity, before after simulated digestion. Complex was evidenced by structural changes when WPI associated CA or EGCG. Reducing capacity FRAP values increased as the phenolic compound concentration while ORAC remained unchanged. In general, compared to isolated compounds, complexation suppressed possibly due...
The aim of this study was to evaluate the content phenolic compounds and anthocyanins antioxidant activity blueberry (Vaccinium sp.) cultivars grown in Brazil. Folin-Ciocalteau method applied order quantify ABTS, DPPH, FRAP, β-carotene/linoleic acid methods were evaluated activity. ranged from 274.48 694.60 mg GAE.100 g-1 fresh weight (FW). Anthocyanins 40.62 378.31 mg.100 FW for Bluecrop Tifblue cultivars, respectively. Antioxidant activities assessed by DPPH FRAP presented significant...
A micro-assay was developed and validated, using a microplate reader in 96-well format, C(11)-BODIPY(581/591) as fluorescent probe AIBN ROO() generator. The structure-activity relationship established for 15 carotenoid standards, indicating that the opening of β-ionone ring increase chromophore extension structure were major factors leading to scavenging capacity. values capacity calculated α-tocopherol reference compound. Among studied carotenoids, all-trans-lycopene most efficient...
The interest in microalga as a food supplement has grown due their high contents of carotenoids, polyunsaturated fatty acids and proteins. This study evaluated the effect different temperatures (22, 27 or 32 °C) sodium nitrate concentrations (12, 24, 36, 48 60 mg L-1 N-NO3) culture medium on Heterochlorella luteoviridis biomass production composition. highest concentration (3.35 g L-1) was observed at N-NO3 concentration. positively affected protein, carbohydrate carotenoids biomass. On...
Inflammatory bowel diseases are characterized by impaired intestinal barrier function. This study aimed to evaluate the effects of grape peel powder (GPP) and its bioactive rich-fractions on function colonic injury in a model colitis induced 2,4,6 trinitrobenzene sulfonic acid (TNBS). Wistar rats received diets supplemented with either GPP (8%), extractable polyphenols (EP), non-extractable polyphenols-rich fraction (NEP-F), or polyphenols-poor, fiber-rich (F) from grapes at amounts...
Microalgae are natural sources of proteins and bioactive compounds can be used as a functional ingredient to improve the nutritional quality gluten-free (GF) bread. Several strategies have been applied aid processing enhance GF bread properties. This study evaluated partial replacement pea flour by Chlorella sorokiniana biomass powder increase The was enriched with 2.5 g (M2.5) or 5.0 (M5.0) microalga per 100 blend rice corn starch in substitution flour. For evaluation carotenoid profile...
Physalis peruviana is an exotic fruit that belongs to the Solanaceae family and which has recently started be produced in Brazil, mainly Southern region. Once there few data regarding its chemical composition, this work presents centesimal mineral composition fatty acid profile of lipidic fraction peruviana. Concerning presented high contents ashes total lipids, 0.8 3.16 g.100 g-1, respectively. In K, Mg, Ca Fe were main elements, present concentrations higher than those common sources such...