Phenols
Mostrando 13-24 de 383 artigos, teses e dissertações.
-
13. Metabolomics-Based Discovery of Biomarkers with Cytotoxic Potential in Extracts of Myracrodruon urundeuva
Myracrodruon urundeuva (“aroeira-do-sertão”) is a species threatened with extinction due to anthropogenic exploitation. Phytochemical analysis of bark, branch and leaf extracts revealed the presence of several compounds such as flavonoids, phenols, tannins, quercetin derivatives and anacardic acids. Dereplication methodology was performed to tentatively
J. Braz. Chem. Soc.. Publicado em: 2020-04
-
14. Preharvest nitrogen application affects quality and antioxidant status of two tomato cultivars
ABSTRACT Intensive horticultural crop production usually involves challenges from excessive application of fertilizer, mainly nitrogen (N). The effect of N fertilizer on the fruit quality and antioxidant status of two cherry tomato cultivars (Caballero and Victoria) under greenhouse conditions was performed. Nitrogen treatments were applied ranging from cond
Bragantia. Publicado em: 2020-03
-
15. Characterization of the solid residue generated in the detoxification step of sugarcane bagasse hemicellulosic hydrolysate and behavior in agricultural soils
ABSTRACT Overliming is an effective way of neutralizing and reducing the toxicity of the hydrolysates generated from acidic pretreatment of lignocellulosic biomass for ethanol production and others biotechnological products. Overliming generates a solid residue whose inadequate disposal may represent an environmental problem. This work aimed at the chemical
Bragantia. Publicado em: 2020-03
-
16. Physical-chemical characterization, microbiological and biocompounds of cashew pulp in industrial and freezing processing
Abstract This study aimed to evaluate the nutritional characteristics, bioactive compounds and microbiological quality during the processing and frozen storage of cashew pulps. Cashew pulps from 4 batches and 3 different sequential stages of industrial processing and storage (after pulping, after pulp thawing that was stored for 3 months in a drum, and 90 da
Food Sci. Technol. Publicado em: 20/12/2019
-
17. Chemical composition and bioactivity of methanolic extract obtained from Lepista sordida
The present study aimed at the evaluation of chemical composition and bioactive potential of methanolic extract obtained from Lepista sordida in terms of antioxidative and antimicrobial efficacy. The macrofungus is recognized for its high nutritional value and medicinal properties. However, to the best of our knowledge bioactivity of its methanolic extract i
Braz. J. Pharm. Sci.. Publicado em: 20/12/2019
-
18. Cichorium intybus from India: GC-MS Profiling, Phenolic Content and in vitro Antioxidant Capacity of Sequential Soxhlet Extracted Roasted Roots
Abstract Research on the bio-activities and chemical composition of roasted C. intybus roots from India is very little. In present studies GC-MS analysis of volatile components of roasted C. intybus roots, phenolics and flavonoid content estimation and antioxidant potential of roasted C. intybus roots was carried out. Antioxidant potential was also evaluate
Braz. arch. biol. technol.. Publicado em: 25/11/2019
-
19. Sub-chronic toxicity evaluation of Dryopteris filix-mas (L.) schott, leaf extract in albino rats
This study evaluated the acute and sub-chronic toxicities of ethanol leaf extract of Dryopteris filix-mas. Acute toxicity and phytochemical tests on ethanol leaf extract were determined. In sub-chronic toxicity test, animals were treated with 62.5, 125, 250 and 500 mg/kg of extract every day for 90 days. Blood samples were collected via retro-orbital punctur
Braz. J. Pharm. Sci.. Publicado em: 03/10/2019
-
20. ETHANOLIC AND HYDROALCOHOLIC EXTRACTS OF PITANGA LEAVES (Eugenia uniflora L.) AND THEIR FRACTIONATION BY SUPERCRITICAL TECHNOLOGY
Abstract Hydroalcoholic extracts prepared by conventional methods (in stirred vessel at 25 °C and 1 bar) and, hydroalcoholic and supercritical carbon dioxide (scCO2) extracts prepared in fixed bed extractors (60 ºC and 400 bar) were obtained from pitanga leaves (Eugenia uniflora L.) in order to recover phenolic compounds. Hydroalcoholic and ethanolic extra
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
-
21. Effect of Leaf Quality on Herbivory of Three Atlantic Forest Species
ABSTRACT The present study evaluated the relationship between herbivory and leaf quality of three abundant tree species (Cupania oblongifolia Mart., Siparuna guianensis Aubl. and Xylopia sericea St. Hill.) in the understory of a eucalyptus plantation and an adjacent Atlantic Rainforest fragment. Herbivory differed among species, since X. sericea was less att
Floresta Ambient.. Publicado em: 23/09/2019
-
22. Stabilization effect of kraft lignin into PBAT:Thermal analyses approach
ABSTRACT Sterically hindered phenols are an important class of synthetic antioxidants for polymers, commonly incorporated to inhibit polyolefins or polyesters oxidation. However, synthetic antioxidants use is under restricted regulation due to their potential health risk and environmental impacts. Thus, great interest has been attracted to the phenol-based n
Matéria (Rio J.). Publicado em: 16/09/2019
-
23. Evaluating the chemical composition and antioxidant activity of three Egyptian seaweeds: Dictyota dichotoma, Turbinaria decurrens, and Laurencia obtusa
Resumo Algas marinhas têm um número crescente de aplicações bem-sucedidas nas indústrias de alimentos, de produtos farmacêuticos e de cosméticos, o que aumenta a importância de se avaliar sua composição química. No presente estudo, três algas marinhas comuns no Egito (Dictyota dichotoma, Turbinaria decurrens e Laurencia obtusa) foram coletadas do
Braz. J. Food Technol.. Publicado em: 12/09/2019
-
24. The role of seasonality on the chemical composition, antioxidant activity and cytotoxicity of Polish propolis in human erythrocytes
ABSTRACT Propolis extracts possess beneficial biological effects, such as antioxidant activity. However, the composition of propolis and biological properties of its extracts depend on many factor, including time of harvesting. The main purpose of this study was to evaluate the seasonal effect on the phenolic profile of Polish propolis extracts and their ant
Rev. bras. farmacogn.. Publicado em: 26/08/2019