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phenolic acid/čiobrelis
Nuoroda įrašoma į mainų sritį
Puslapis 1 nuo 21 rezultatus
The use of TLC-DPPH* test with image processing to study direct antioxidant activity of phenolic acid fractions of selected Lamiaceae family species.
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TLC coupled with 2,2-diphenyl-1-picrylhydrazyl staining was used to analyze phenolic acid fractions of selected Salvia and Thymus species. Documented videoscans were processed by means of an image processing program. This is the first time that free phenolic acids fractions, as well as fractions
On-line coupled dynamic sonication-assisted extraction-liquid chromatography for the determination of phenolic acids in Lamiaceae herbs.
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A fast and efficient on-line coupled dynamic sonication-assisted extraction-liquid chromatography (DSAE-LC) method was developed for the determination of phenolic acids in basil, oregano, rosemary, sage, spearmint and thyme. The extraction and chromatography were coupled via a solid-phase trap
Comprehensive two-dimensional liquid chromatography in analysis of Lamiaceae herbs: characterisation and quantification of antioxidant phenolic acids.
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A fast and effective dynamic sonication assisted ethanol extraction method was developed for extracting phenolic acids from basil, oregano, rosemary, sage, spearmint and thyme of the Lamiaceae family. The results were compared with results obtained by conventional solvent extraction techniques. A
Phenolic Acids of Plant Origin-A Review on Their Antioxidant Activity In Vitro (O/W Emulsion Systems) Along with Their in Vivo Health Biochemical Properties.
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Nature has generously offered a wide range of herbs (e.g., thyme, oregano, rosemary, sage, mint, basil) rich in many polyphenols and other phenolic compounds with strong antioxidant and biochemical properties. This paper focuses on several natural occurring phenolic acids (caffeic, carnosic,
Phenolic acid composition, antiatherogenic and anticancer potential of honeys derived from various regions in Greece.
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The phenolic acid profile of honey depends greatly on its botanical and geographical origin. In this study, we carried out a quantitative analysis of phenolic acids in the ethyl acetate extract of 12 honeys collected from various regions in Greece. Our findings indicate that protocatechuic acid,
Evaluation of the impact of chlorophyll removal techniques on polyphenols in rosemary and thyme by-products.
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The impact of dechlorophyllization (n-hexane: water partitioning, activated charcoal bleaching, and ChloroFiltr® decolorization) on major polyphenols of two herbal by-products (rosemary and thyme) was assessed. The aim was to produce decolorized extracts for food preservation and improve the
Profiling polyphenol composition by HPLC-DAD-ESI/MSn and the antibacterial activity of infusion preparations obtained from four medicinal plants.
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The infusions of Thymus pallescens Noë, Saccocalyx satureioides Coss. et Dur., Ptychotis verticillata Briq. and Limoniastrum guyonianum Boiss. have been used as medicinal remedies for many diseases in Algerian folk medicine. These species have also been well documented as rich sources of
Multi-Response Extraction Optimization Based on Anti-Oxidative Activity and Quality Evaluation by Main Indicator Ingredients Coupled with Chemometric Analysis on Thymus quinquecostatus Celak.
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Thymus quinquecostatus Celak is a species of thyme in China and it used as condiment and herbal medicine for a long time. To set up the quality evaluation of T. quinquecostatus, the response surface methodology (RSM) based on its 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity was
Polysaccharides from Thymus vulgaris leaf: Structural features, antioxidant activity and interaction with bovine serum albumin.
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Thymus vulgaris is used for various health benefits and culinary, nevertheless, report on its macromolecules is absent. Here, we report chemical compositions of the polysaccharides isolated from its leaf by sequential extraction with inorganic solvents. In particular, chemical profile of a unique
[Composition, antifungal and radical scavenging activities of 4 propolis].
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HPLC/MS analysis revealed that the main constituents of Brazilian propolis A and B were artepillin C and drupanin, while those of New Zealand propolis C were pinocembrin, galangin and alkylphenol. No flavonoid or phenolic acid was detected in Japanese propolis D. Propolis C showed comparatively
Evaluation of Thymus vulgaris and Thymbra spicata essential oils and plant extracts for chemical composition, antioxidant, and antimicrobial properties.
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The objectives of this study were (a) to obtain the essential oils (by hydrodistillation [HD] and microwave-assisted extraction [MAE] methods) to determine the effect of the oil extraction method on the chemical composition, oil yield (%), free radical scavenging activity (IC50), ferric
Thymus algeriensis and Thymus fontanesii: Chemical Composition, In Vivo Antiinflammatory, Pain Killing and Antipyretic Activities: A Comprehensive Comparison.
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This study aimed to investigate the chemical composition, and evaluate the antioxidant, anti-inflammatory, anti-pyretic, and the analgesic properties of methanol extracts from the leaves of Thymus algeriensis and Thymus fontanesii (Lamiaceae). Thirty-five secondary metabolites were
Phenolic composition and antioxidant activity of the different extracts from Thymus longicaulis C Presl. subsp. longicaulis var. longicaulis and T. longicaulis C. Presl. subsp. longicaulis var. subisophyllus growing in Turkey.
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The objectives of the present study were to investigate the phenolic composition and in vitro antioxidant capacities of the infusions and different extracts of two Thymus taxa: Thymus longicaulis C. Presl. subsp. longicaulis var. longicaulis and Thymus longicaulis C. Presl. subsp. longicaulis var.
Exploring reserve lots of Cymbopogon citratus, Aloysia citrodora and Thymus × citriodorus as improved sources of phenolic compounds.
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Given the increasing consumers demand for novelty, tea companies have been presenting new added value products such as reserve lots of aromatic plants. Herein, infusions from different lots of three aromatic plants were assessed in terms of phenolic composition (HPLC-DAD-ESI/MS) and antioxidant
Extraction of Honey Polyphenols: Method Development and Evidence of Cis Isomerization.
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Honey polyphenols have been studied with the objective of relating honeys to their floral sources. Initially synthesized by plant, these polyphenols can be found in the plant's nectar, which are collected by bees, which convert the nectar into honey. Consequently, polyphenols constitute minor
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