A5068054943- Natural Compounds in Disease Treatment
- Natural product bioactivities and synthesis
- Sugarcane Cultivation and Processing
- Biofuel production and bioconversion
- Polysaccharides and Plant Cell Walls
- Bioactive Compounds and Antitumor Agents
- Biological Activity of Diterpenoids and Biflavonoids
- Phytochemical compounds biological activities
- Sesquiterpenes and Asteraceae Studies
- Molecular spectroscopy and chirality
- Botanical Research and Applications
- Chemical synthesis and alkaloids
- Viral Infections and Vectors
- Fungal and yeast genetics research
- Soybean genetics and cultivation
- Microbial Metabolites in Food Biotechnology
- Agricultural and Food Sciences
- Seed Germination and Physiology
- Diverse Scientific Research Studies
- Plant Surface Properties and Treatments
- Rice Cultivation and Yield Improvement
- Phytochemistry and Biological Activities
- Synthesis and bioactivity of alkaloids
- Phytochemistry and Bioactivity Studies
- Phytochemistry Medicinal Plant Applications
Universidade Federal de Minas Gerais
2016-2024
Utrecht University
2009
The use of biochar can have several effects on plant germination, depending raw material, preparation method and application dose. However, the molecular mechanisms that lead to those results yet be elucidated. aim this research was improve understanding these by characterizing metabolic sugarcane bagasse soybean germination. Three types biochars were prepared pyrolysis at 300 °C (SCB300), 400 (SCB400) 600 (SCB600). Then, each one mixed sand in a 1, 3, 5% w/w experiment performed 8 days...
The new flavonoid (-)-4'-O-methylepicatechin 5-O-β-D-glucopyranoside (1), along with four known triterpenes (2-5), a steroid (6), and (7) were isolated from the ethyl acetate extract of Maytenus quadrangulata leaves. chemical structures compounds determined through analysis 1D NMR (
The present study evaluated the effects of biochar derived from sugarcane straw on physicochemical and biological properties soil initial development sugarcane. Microcosm pot experiments were conducted over 60 days to monitor variables such as pH, water retention capacity, microbial activity, growth, metabolomic profile plant leaves. results indicated that increased capacity without significantly affecting pH. promoted root length mass favored growth microbiota, reflected by an increase in...
Friedelan-3-one (1) and friedelane-3,16-dione (2) isolated from leaves branches of Maytenus robusta Reissek were subjected to structural modifications via nucleophilic addition the carbonyl group Baeyer-Villiger oxidation in order synthesize potential cytotoxic compounds. The oximes friedelane-3-hydroxyimino (3) 3-hydroxyiminofriedelan-16-one (4) together with lactones friedelane-3,4-lactone (5) 3,4-lactonefriedelan-16-one (6) characterized by IR NMR spectroscopic analyses. Compounds 4 6 are...
Three new triterpenes, 3,4-seco-3,11β-epoxyfriedel-4(23)-en-3β-ol (1), friedelan- 3α,11β‑diol (2), 7β,26-epoxyfriedelan-3a,7a-diol (3), a mixture of two triterpenes 3a-hydroxyfriedelan-29-yl palmitate (4) and 3α-hydroxyfriedelan-29-yl stearate (5) eleven known compounds were obtained from the hexane extract Maytenus quadrangulata leaves. The structures relative stereochemistry established through 1D/2D nuclear magnetic resonance (NMR), high resolution mass spectrometry (HRMS), Fourier...
Abstract Extracts and compounds obtained from several species of Celastraceae family are reported as potential sources drugs due to their diverse pharmacological properties. Nevertheless, essential oil composition these is still little known. This work aimed at the analysis oils different Brazilian species. A total seventeen were using hydrodistillation process analyzed by gas chromatography/mass spectrometry (GC/MS). Principal component (PCA) allowed identification a chemical pattern among...
Abstract Mauritia flexuosa palms inhabit wetland environments in the dry, seasonal Brazilian savanna (Cerrado) and produce mucilaginous secretions stem petiole that have a medicinal value. The present study sought to characterize chemical natures of those describe anatomical structures involved their synthesis. Chemical analyzes secretions, anatomical, histochemical analyses, electron microscopy studies were performed on roots, stipes, petioles, leaf blades. Stipe are similar, rich cell wall...
Maytenus distichophylla is a medicinal species used in Northeast of Brazil.The hexane (HE), chloroform (CE), ethyl acetate (EAE) and methanol (ME) extracts compounds from its roots were evaluated for their protective activity against Staphylococcus aureus Candida albicans.The cytotoxicity chronic myeloid leukemia (K562), acute monocytic (THP-1), peripheral blood mononuclear cells normal individuals (PBMC) was established by MTT method using etoposide as standard.The vivo toxicity samples...
A ocorrência persistente de leishmania no Brasil é indicativa da necessidade estudos que avaliem o potencial Symphonia globulifera L.f., já estudada em outros países, contra os parasitas Leishmania amazonensis e infantum . literatura indica emprego dos fármacos administrados a questionável, razão do alto custo, forma aplicação, toxicidade efeitos colaterais. Embora com S. continente africano tenham confirmado sua atividade leishmanicida, não foram realizadas muitas pesquisas relacionadas...
Plants from Salacia genus are used in traditional medicine for a wide range of diseases. Previous studies reported bioactive pentacyclic triterpenoids S. elliptica leaves and branches. In this study, the novel triterpenoid 7α,15α-dihydroxyfriedelan-3-one (1) was obtained roots elliptica, along with seven known compounds: friedelan-3-one (2), friedelan-3β-ol (3), friedelan-1,3-dione (4), friedelan-3,15-dione (5), 15α-hydroxyfriedelan-3-one (6), 15α,26-dihydroxyfriedelan-3-one (7),...