Brazilian propolis has been classified into 12 groups based on physicochemical characteristics: five in the southern Brazil group (group 3), one southeastern 12), and six northeastern 6). The plant origins of these were investigated using reversed-phase high-performance thin-layer chromatography (RPHPTLC), liquid (RPHPLC), gas chromatography−mass spectrometry (GC−MS). It was concluded that 3, 6, are resins poplar tree, Hyptis divaricata, Baccharis dracunculifolia, respectively. Keywords:...

The aim of this study was to assess, using the DPPH assay, antioxidant activity several substances that could be proposed immediately revert problems caused by bleaching procedures. percentage (AA%) 10% ascorbic acid solution (AAcidS), gel (AAcidG), sodium ascorbate (SodAsS), (SodAsG), bicarbonate (Bicarb), Neutralize® (NE), Desensibilize® (DES), catalase C-40 at 10 mg/mL (CAT), alcohol alpha-tocopherol (VitE), Listerine® (LIS), 0.12% chlorhexidine (CHX), Croton Lechleri (CL), % aqueous...

This study aimed to evaluate the antioxidant, anti-inflammatory, and cytotoxic properties phenolic composition of peel seed avocado varieties Hass Fuerte using green solvents. Ethanol soluble compounds were identified in both HPLC-MS/MS quantified HPLC-DAD. Agro-industrial by-products exhibited high radical scavenging activity against synthetic free radicals (DPPH ABTS) reactive oxygen species (peroxyl, superoxide, hypochlorous acid) ability reduce Fe3+ Fe2+. The main with significant...

Previously, it was reported that one group of propolis (Group 12) identified in southeastern Brazil, and the botanical origin Baccharis dracunculifolia resinous exudates. It also observed honeybee (Africanized Apis mellifera) mainly visited leaf buds or unexpanded leaves B. but rarely expanded leaves. is dioecious with male female inflorescences, RPHPLC ethanolic extracts respective bud exudates showed same profiles. profiles G12 similarity, quantitatively decreased chemical constituents as...

Red propolis is a new type of Brazilian propolis. This material, as well the secretions 20 plant species that are often mentioned its probable botanical source, have been investigated by RP-HPTLC. Phytochemical evidence based on UV-VIS spectra, RP-HPLC and GC-MS, showed Dalbergia ecastophyllum (L.) Taub. to be main source red in Alagoas state. The resin high relative percentages isoflavonoids 3-Hydroxy-8,9-dimethoxypterocarpan medicarpin. To our knowledge this first report secretion leguminous being

The objective of this study was to evaluate anti-inflammatory and antimicrobial activities neovestitol vestitol isolated from Brazilian red propolis (BRP). BRP ethanolic extract (EEP), neovestitol, were evaluated by properties using a neutrophil migration assay. activity minimal inhibitory bactericidal concentrations (MIC MBC) against Streptococcus mutans , sobrinus Staphylococcus aureus Actinomyces naeslundii . Neovestitol, vestitol, EEP inhibited at dose 10 mg/kg. Regarding activity,...

The aim of this study was to determine the antioxidant activity, phenolic content and antibacterial activity pollen extracts obtained with different concentrations ethanol. Each extraction condition (ethanol solutions from 40 90%) had a effect in compounds content. Although, extract at 60, 70 80% ethanol showed relatively higher levels (>10 mg/g) did not present statistical significant difference between conditions. amount total phenolics ranged 3.6 8.1 6.6 10.9 mg GAE/g for Alagoas state...

Oral candidiasis is an opportunistic fungal infection of the oral cavity with increasingly worldwide prevalence and incidence rates. Novel specifically-targeted strategies to manage this ailment have been proposed using essential oils (EO) known antifungal properties. In study, we aim investigate activity mode action EO from Coriandrum sativum L. (coriander) leaves on Candida spp. addition, detected molecular targets affected in whole-genome expression human cells. The phytochemical profile...

Vegetables are widely consumed in Brazil and exported to several countries. This study was performed evaluate the phenolic content antioxidant activity of vegetables commonly using five different methods, namely DPPH ABTS free radical, β-carotene bleaching, reduction Fe3+ (FRAP), oxidative stability Rancimat, chemical composition gas chromatography-mass spectrometry (GC-MS). The compounds ranged from 1.2 mg GA/g (carrot) 16.9 (lettuce). presenting highest were lettuce (77.2 µmol Trolox/g...

The aim of this study was to evaluate the effect seasons on chemical composition and antibacterial activity Brazilian red propolis (BRP) its plant source. BRP collected from Maceio, Alagoas state, north-east Brazil, during one year. Chemical determined by physicochemical analyses HPLC while antimicrobial assessed against Streptococcus mutans, sobrinus, Staphylococcus aureus Actinomyces naeslundii determining minimal inhibitory bactericidal concentrations (MIC MBC, respectively). comparative...

Abstract Background Geopropolis is a type of propolis containing resin, wax, and soil, collected by threatened stingless bee species native to tropical countries used in folk medicine. However, studies concerning the biological activity chemical composition geopropolis are scarce. In this study, we evaluated antimicrobial antiproliferative ethanolic extract (EEGP) Melipona scutellaris its bioactive fraction against important clinical microorganisms as well their vitro cytotoxicity profile....

Brazilian native fruits are unmatched in their variety, but a poorly explored resource for the development of food and pharmaceutical products. The aim this study was to evaluate phenolic composition as well antioxidant anti-inflammatory activities extracts leaves, seeds, pulp four (Eugenia leitonii, Eugenia involucrata, brasiliensis, myrcianthes). GC—MS analyses ethanolic showed presence epicatechin gallic acid major compounds these fruits. Antioxidant activity measured using synthetic DPPH...

South Brazilian organic propolis (OP), which has never been studied before, was assessed and its chemical composition, scavenging potential of reactive oxygen species, antimicrobial anti-inflammatory activities are herein presented. Based on the profile obtained using HPLC, OP grouped into seven variants (OP1–OP7) all them exhibited high activity, mainly against superoxide hypochlorous acid species. OP1, OP2, OP3 had smallest minimal inhibitory concentration (MIC) Gram-positive bacteria...

Purification and bioassay-guided fractionation were employed to isolate proanthocyanidins with antioxidant activity from peanut skin (Arachis hypogaea Runner 886). The crude extract was prepared acetone (60% v/v) purified using chromatographic methods, including a semipreparative HPLC technique. As result, two isolated identified NMR, epicatechin-(2 β → O 7, 4 8)-catechin (proanthocyanidin A1) epicatechin-(β 2 8)-epicatechin A2). Despite the structural similarity, differences observed in...