A5083233478- Essential Oils and Antimicrobial Activity
- Bee Products Chemical Analysis
- Phytochemistry Medicinal Plant Applications
- Phytochemistry and Biological Activities
- Insect and Pesticide Research
- Natural product bioactivities and synthesis
- Heavy Metals in Plants
- Toxic Organic Pollutants Impact
- Microplastics and Plastic Pollution
- Free Radicals and Antioxidants
- Botany, Ecology, and Taxonomy Studies
- Soil Science and Environmental Management
- Phytochemicals and Antioxidant Activities
- Academic Research in Diverse Fields
- Effects and risks of endocrine disrupting chemicals
- Water Quality and Resources Studies
Universidade Estadual do Centro-Oeste
2009-2024
EXTRACT: AN ALTERNATIVE TO ETHANOLIC EXTRACT.Propolis is mostly used as hydroalcoholic extract.Recently there has been a growing number of patents dealing with new solvents for preparing propolis extracts.This study aimed to prepare edible oil extracts and compare their chemical composition biological activity ethanolic extracts.ESI-MS spectrophotometric methods were qualitative quantitative analyses, respectively.Antibacterial was evaluated by diffusion in agar.Cytotoxicity tested MTT assay...
Objective . As propolis is a highly valued bee product, we aimed to verify the quality of aged propolis, investigating their phenolic and flavonoid composition, levels toxic metals, radical scavenging antimicrobial activities. Material Methods Samples fresh six different beekeepers, from same geographical location, were investigated in terms composition Pb, Cd, Cr, as well Results The two groups had similar qualitative by HPLC-PDA ESI(-)-MS. Fresh show no differences when average values...
Abstract The study aimed to evaluate the antifungal potential of an extract propolis obtained with edible vegetable oil ( ODEP ) and identify compounds in this extract. Propolis sample was extracted canola oil. After filtration, oily liquid submitted solvent partition dried obtain , which tested vitro against C andida albicans strains. fractioned on Sephadex by high‐performance chromatography HPLC ). Active fractions and/or a pure compound were analyzed nuclear magnetic resonance,...
SummaryTotal phenolic, flavonoid and mineral contents antiradical activity are usually used as a measure of propolis extract quality. The purpose this study was to compare the quality extracts obtained with different solvents such water, ethanolic solutions (30, 70, 95%, v/v in water) edible vegetable oils (canola soybean). LC-MS identify constituents extracts. Antiradical assayed using chemiluminescence from luminol/hemin/H2O2/CTAB system DPPH test. Both assays were strongly correlated (r =...
In this study, a total of thirty-nine propolis samples from southern Brazil were extracted with diethylether and investigated by Gas Chromatography – Mass Spectrometry (GC MS). The objective study was first to contribute the elucidation chemical composition brown produced in through investigation profile its apolar fraction second investigate if GC MS extracts combine multivariate analysis may help origin discrimination propolis. Fifty-three compounds tentatively identified classified into...
Total levels of caffeoylquinic, p-coumaric, and benzoic acid derivatives, flavonols, dihydroflavonols were investigated in 44 brown propolis samples from the state Paraná (Brazil) together with their cytotoxicity antibacterial activities. The aim was to discover chemical biological activity-based patterns. Great quantitative variation found within individual samples; however, a typical extract might contain 11.14–21.45 mg caffeoylquinic derivatives/g, 6.27–12.17 p-coumaric 3.18–7.45...
The levels of selective bioactive compounds in propolis produced the state Paraná, Brazil, were compared with green (São Paulo and Minas Gerais), brown (Santa Catarina), red (Bahia) propolis. suitability HPLC-DAD method was checked: R2 > 99% no evidence lack-of-fit (p 0.01); recoveries within 84.30–119.52% (only 3,4-di-O-caffeoylquinic acid recovery higher, namely 138.77%); precision up to 11.76% (repeatability) 14.56% (intermediate); LODs LOQs 0.74–3.02 µg/ml 2.48–10.07 µg/ml, achieved....
Verbena minutiflora (Verbenaceae) is popularly consumed as an infusion for the treatment of various diseases. However, so far there no pharmacological or chemical validation to support its therapeutic applications. Therefore, analysis composition and activities V. crucial. In this study, extracts infusions aerial parts (leaves, flowers stems) were analyzed during four consecutive years. Extracts leaves had significantly higher phenolic content antiradical capacity than stems regardless year...
A Persea major (Pau de Andrade), é uma planta nativa do Sul Brasil conhecida por suas propriedades medicinais, com foco na casca como matéria-prima. Destaca-se o crescente interesse pesquisa fitoterápicos, visando recursos sustentáveis para desenvolvimento medicamentos. tem sido utilizada tradicionalmente devido a cicatrizantes gastroprotetoras, antibacterianas e antissépticas, embora haja escassez publicações sobre seu uso. Estudos fitoquímicos revelaram presença compostos bioativos,...
Natural compounds are possible alternatives for wound treatment, including Ilex paraguariensis, a plant with several pharmacological actions already reported, anti-inflammatory, antibacterial, antioxidant, and healing activities. Therefore, this study aimed to perform technological scientific mapping of paraguariensis used and/or analgesic purposes. Technological prospection was carried out in the Questel-Orbit system, while research PubMed, Web Science, SCOPUS databases. The terms "Ilex...
Herein we report for the first time levels of phenylpropanoids and iridoids in extracts infusions V. minutiflora consumed Brazil to treat urinary infectious disorders. An house validation study demonstrated good accuracy precision determine bioactive compounds by HPLC-DAD. Phenylpropanoids varied (leaves 139.70 221.20 mg g-1, flowers 106.43 227.22 stems 42.18 56.48 g-1). Verbascoside occurred higher concentration leaves (87.66 - 136.16) g-1 (58.12 148.96) than (19.24 24.62) g-1. Iridoids...
This study evaluated the mineral content in infusions and aerial parts (leaves, flowers stems) of Gervão (Verbena minutiflora) for four consecutive years using atomic spectrometry. The different air V. minutiflora showed significant variability between certain levels. leaves highest concentrations all minerals, except K, regardless year collection: stem (Fe = 50; Ca 20, Zn 770; Mg 7.5; Cu 4450; Al 110; Na 350, K 13520 mg kg-1), 150, 33, 1.110, 15, 7510, 480; 260, 10620 340, 35; 1930 Zn,...