The paper aimed to determine and compare the antioxidant activity of two tinctures and selected flavonoids present in the tinctures. The tinctures were prepared from hawthorn fruits and motherwort herb. The group of selected flavonoids included rutin, quercetin, hyperosid, epicatechine, and procyanidin B2. Two methods were employed to determine antioxidant activities: the inhibition of peroxynitrite-induced nitration of tyrosine was measured, and the ability to quench radicals was examined by of the stable radical 2,2-diphenyl-1-picrylhydrazyl (DPPH). Both tinctures under study were able to quench radicals and reactive forms of oxygen and nitrogen. The motherwort herb tincture was more effective, but no direct effect of phenolic compounds on the extent of antioxidant activity was demonstrated. The total content of polyphenols in the motherwort herb tincture was higher by 163 %, nevertheless antiperoxynitrite activity was higher just by 19 % (p < 0.05), and the ability to reduce DPPH differed in both tinctures in a minimal manner. Of the individual flavonoids, the substances present in the tinctures in higher concentrations contributed most to antioxidant activity. In the hawthorn fruit tincture it was epicatechine and hyperosid, whereas in the motherwort herb tincture it was rutin.
- MeSH
- antioxidancia izolace a purifikace farmakologie MeSH
- Crataegus chemie MeSH
- flavonoidy izolace a purifikace farmakologie MeSH
- fytoterapie MeSH
- rostlinné přípravky chemie MeSH
- srdečník chemie MeSH
- techniky in vitro MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
- Názvy látek
- antioxidancia MeSH
- flavonoidy MeSH
- rostlinné přípravky MeSH
The paper aimed to determine the effects of mixtures of selected medicinal plants on some physiological renal functions, i.e. excretion of urine and electrolytes and changes in the quantity of prostaglandins E2 (PGE2) and kallikrein-kinins in rat blood plasma after water and salt load. The following medicinal plants were selected for the examination: downy birch (Betula pubescens EHRH.), everlasting flower (Helichrysum arenarium L. MOENCH.), hawthorn (Crataegus oxyacantha L.), woodland strawberry (Fragaria vesca L.), sweet corn (Zea mays L.), German chamomile (Matricaria recutita L.), and field horsetail (Equisetum arvense L.). Herbal drugs were used to compose 6 mixtures. Extracts from these mixtures were administered to Wistar strain males and their effects were compared with the effects of an administered suspension of hydrochlorothiazide, an extract from field horsetail herb alone, and a control group of animals which was not administered any preparation. The greatest diuretic effect was found in a mixture composed of birch leaves (Betulae folium), hawthorn berries (Crataegi fructus), strawberry leaves (Fragariae folium), corn silk (Maydis stigmata), chamomile flowers (Matricariae flos), and horsetail herb (Equiseti herba). Its effect was greater by 47% and 34% than the effect of a horsetail herb extract and a hydrochlorothiazide suspension (p < 0.05), respectively. The extract from this mixture also increased the quantity of prostaglandins E2 and kallikrein-kinins in rat blood plasma in water and salt load.
- MeSH
- diuréza účinky léků MeSH
- elektrolyty moč MeSH
- krysa rodu Rattus MeSH
- léčivé rostliny chemie MeSH
- ledviny účinky léků MeSH
- potkani Wistar MeSH
- rostlinné extrakty farmakologie MeSH
- zvířata MeSH
- Check Tag
- krysa rodu Rattus MeSH
- mužské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
- Názvy látek
- elektrolyty MeSH
- rostlinné extrakty MeSH
The paper aimed to elaborate the technology of the production of a liquid ginger extract and to select and verify the methods of quality evaluation of the final preparation. The experiment revealed 70% ethanol as a suitable extraction agent. The optimal conditions for the development of an extract of good quality are established when the herbal drug is crushed to form particles passing through a sieve with a mesh size of 4000 microm, the extraction method is repercolation with the division of the charge of the drug in the relation 5:3:2, and the liquid flows from the percolator at a rate of 0.2ml/min/100 g of the drug. The presence of amino acids, saccharides, glycosides, reducing agents, phenolic substances, and alkaloids in the finished extract was demonstrated by means of colour or precipitation reactions. Thin-layer chromatography was employed to demonstrate gingerols and shogaols. Evaporation residue, ethanol concentration, and the amount of essential oils were determined quantitatively.
This paper aimed to elaborate the technology of the production of a composite tincture with an immunostimulatory and adaptogenic effect, to select suitable methods of quality evaluation, and perform stability tests. The tops of the purple coneflower (Echinaceae herba) and fruits of the dog rose (Cynosbati fructus) in a ratio of 1:1 were employed to prepare the tincture. The tincture itself was prepared in a ratio of 1:5. The experiment revealed that ethanol 50% was the most suitable extracting agent. The optimal conditions for the obtaining of a quality tincture are formed when the drug is disintegrated into the required degree by grinding, percolation is used for extraction, and the rate of flowing of the extract from the percolator is 0.2 ml/min/100g of the drug. The determination of the dry residue, relative density, ethanol concentration and content of cichoric acid (spectrophotometrically), ascorbic acid (oxidimetrically), and tannins (manganometrically) served to evaluate the quality of prepared extracts. Stability tests (temperature 25+/-2 degrees C, relative humidity 60+/-5%, period of 2 years) have shown that the prepared tincture maintains its quality parameters for the given period.
- MeSH
- Echinacea * MeSH
- farmaceutická chemie MeSH
- fytoterapie * MeSH
- Rosa * MeSH
- rostlinné extrakty MeSH
- rostlinné přípravky * MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
- Názvy látek
- rostlinné extrakty MeSH
- rostlinné přípravky * MeSH
