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Tytuł:
The influence of plant mulches on the content of phenolic compounds in soil and primary weed infestation of maize
Wpływ mulczów na zawartość związków fenolowych w glebie i zachwaszczenie pierwotne kukurydzy
Autorzy:
Stoklosa, A.
Hura, T.
Stupnicka-Rodzynkiewicz, E.
Dabkowska, T.
Lepiarczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/27230.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
plant mulch
phenolic compound
phenolic compound content
soil
primary weed infestation
maize
phenolic acid
Opis:
In growing maize, an increase in the content of phenolic compounds and selected phenolic acids in soil was found after the incorporation of white mustard, buckwheat, spring barley, oats and rye mulches into the soil. The highest content of phenolic compounds in soil was found after oats mulch incorporation (20% more than in the control soil). The highest content of selected phenolic acids was found for the soil with the oats and rye mulch. Among the phenolic acids investigated, ferulic acid was most commonly found in the soil with the plant mulches. However, two phenolic acids: the protocatechuic and chlorogenic acid, were not detected in any soil samples (neither in the control soil nor in the mulched soil). At the same time, a decrease in the primary weed infestation level in maize was found in the plots with all the applied plant mulches, especially on the plots with oats, barley and mustard. The plant mulches were more inhibitory against monocotyledonous weeds than dicotyledonous ones. During high precipitation events and wet weather, a rapid decrease in the content of phenolic compounds in soil and an increase in the primary weed infestation level in maize were observed.
W uprawie kukurydzy stwierdzono wzrost zawartości związków fenolowych i wybranych kwasów fenolowych w glebie po wprowadzeniu do niej mulczu z: gorczycy białej, gryki, jęczmienia jarego, owsa i żyta. Najwyższą zawartość związków fenolowych stwierdzono w glebie z mulczem z owsa (o 20% więcej, niż w glebie kontrolnej). Najwyższą zawartość wybranych kwasów fenolowych stwierdzono w glebie z mulczami z owsa i żyta. W glebie z mulczami najczęściej stwierdzano kwas ferulowy. Jednocześnie w żadnej glebie (kontrolnej i z mulczami) nie stwierdzono występowania kwasów fenolowych: protokatechowego i chlorogenowego. Równocześnie na tych samych poletkach z mulczami stwierdzono zmniejszenie zachwaszczenia pierwotnego kukurydzy, wyraźne zwłaszcza z mulczem z owsa, jęczmienia jarego i gorczycy białej. Zastosowane mulcze bardziej ograniczały wzrost chwastów jednoliściennych. Wyraźne zmniejszenie ilości związków fenolowych w glebie oraz zwiększenie zachwaszczenia pierwotnego kukurydzy obserwowano w okresie zwiększania ilości opadów i wilgotnej pogody.
Źródło:
Acta Agrobotanica; 2008, 61, 2
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Free and bound phenolic acids in inflorescences and rhizomes with roots of Hieracium pilosella L. [Asteraceae]
Autorzy:
Gawronska-Grzywacz, M
Krzaczek, T.
Powiązania:
https://bibliotekanauki.pl/articles/58360.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
free phenolic acid
bound phenolic acid
phenolic acid
inflorescence
rhizome
root
Hieracium pilosella
Compositae
Opis:
The analysis of the fractions of free and bound, liberated by hydrolysis, phenolic acids in the inflorescences and rhizomes with roots of Hieracium pilosella L. was conducted by 2D-TLC and RP-HPLC methods. In the inflorescences fourteen phenolic acids were found: chlorogenic, gallic, protocatechuic, homoprotocatechuic, caffeic, gentisic, p-hydroxyphenylacetic, p-hydroxybenzoic, m-hydroxybenzoic, p-coumaric, syringic, vanillic, ferulic and salicylic. In the rhizomes with roots nine phenolic acids were identified: chlorogenic, gallic, homoprotocatechuic, caffeic, gentisic, p- hydroxyphenylacetic, p-hydroxybenzoic, syringic and vanillic. By means of the RP-HPLC method the contents of major acids were estimated which ranged from 0.01 mg% up to 139.50 mg%. Caffeic acid is the remarkably dominating constituent of both plant materials. Phenolic compounds may contribute to invasiveness and medicinal properties of this species.
Źródło:
Acta Societatis Botanicorum Poloniae; 2006, 75, 3; 215-218
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of abiotic stress during soybean germination followed by recovery on the phenolic compounds of radicles and their antioxidant capacity
Autorzy:
Swigonska, S.
Amarowicz, R.
Krol, A.
Mostek, A.
Badowiec, A.
Weidner, S.
Powiązania:
https://bibliotekanauki.pl/articles/57387.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
abiotic stress
environmental stress
soybean
germination
phenolic compound
phenolic acid
isoflavone
antioxidant capacity
Opis:
Abiotic stress factors are among the major causes of lower crop yields. It is known, that in response to cold and/or osmotic stress, crops activate various defense mechanisms, including morphological, physiological and metabolic adaptations. Secondary metabolism, especially phenolic compounds, seem to be an important factor of stress-induced metabolic re-engineering as their levels are alternated by abiotic stress in plants. Despite the fact, that the nature and function of phenolic compounds was already studied in various plant species, it is important to define tissue-specific changes induced by two most potent abiotic stressors – low temperature and decreased water potential. Moreover, in fields, the appearance of single stress is rather rare. Usually two or more factors are acting in parallel, which may potentially result in different effects. Therefore, the aim of this study was to analyze selected elements of secondary metabolism in roots of germinating soybean seeds under cold stress, osmotic stress and both stresses combined. In addition the effects of constant and persistent stress were compared to those induced by sudden and brief stress appearance, as well as after the post-stress recovery process. In the presented study standard methods for identification and quantification of phenolic acids and isoflavones were used and the antioxidant capacity of the radicle extracts was measured. The phenolic metabolism in plants was greatly intensified in response to cold and osmotic stress and remained at high level during the post-stress recovery. The amount and composition of both phenolic acids and identified isoflavones also changed in stress- and duration-dependent manner. This proves an important role of phenolic compounds in abiotic stress response of germinating soybean seeds and opens up new perspectives for further investigations.
Źródło:
Acta Societatis Botanicorum Poloniae; 2014, 83, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of antioxidant properties of leaves of plants grown in Turkey
Autorzy:
Palamutoglu, Recep
Yalcin, Seda
Kasnak, Cemal
Powiązania:
https://bibliotekanauki.pl/articles/1030826.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ABTS
Antioxidant
DPPH
FRAP
Phenolic
Opis:
In this study, DPPH radical scavenging activity, ABTS radical cation decolorization assay, FRAP reducing power, total phenolic content, total flavonoid content and phenolic compounds of leaves of plants, grown in Afyon/Turkey were investigated. These plants were poppy, daisy, dandelion, manger, chickweed, black chicory and white chicory. Phenolic acids including gallic acid, ferulic acid, chlorogenic acid, coumaric acid, ellagic acid, vanilic acid, caffeic acid, cinnamic acid, 4-hydroxybenzoic acid, 2,5-dihydroxybenzoic acid and flavonoids including catechin, apigenin, naringin, rutin and quercetin amounts in leaves were determined. Among plants leaves, leaves of daisy and manger had statistically highest DPPH value and leaves of poppy and dandelion had statistically highest ABTS value, while leaves of White chicory had statistically highest FRAP value, total phenolic content and total flavonoid content. Leaves of black chicory and white chicory had higher phenolic compounds compared to that of other plants. These results suggest the using of these leaves as sources of natural antioxidants.
Źródło:
World Scientific News; 2020, 145; 198-209
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of fluridone on accumulation of carotenoids, flavonoids and phenolic acids in ripening tomato fruit
Autorzy:
Wiczkowski, W.
Góraj-Koniarska, J.
Saniewski, M.
Horbowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/12689671.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
tomato
Lycopersicon esculentum
fruit ripening
carotenoid
flavonoids
phenolic composition
phenolic acid
fluridone
Opis:
We examined the response of maturing tomato fruit exposed for 7 days to fluridone (1-methyl-3-phenyl-5-[3-trifluoromethyl(phenyl)]-4(1H)-pyridinone). Fluridone was applied in lanolin paste in the form of a 2–3 mm wide strip from the top to the base of the fruit. As a control, a similar stripe of lanolin was applied in the same way on the opposite side of the same fruit. The content of major carotenoids, as well as flavonoids, and free and bound phenolic acids were determined using a HPLC and HPLC-MS-MS methods. Fluridone almost completely blocked the biosynthesis of lycopene and substantial declined content of ß-carotene and lutein in the tomato fruit. The fluridone caused a decreased content of quercetin, rutin and naringenin, and increased level of epicatechin. The herbicide did not affect the content of p-coumaric acid, but reduced the level of caffeic acid, both free and ester form, and declined the content of free ferulic and chlorogenic acids. Changes in phenolics composition observed for the first time indicate that fluridone interferes with the biosynthesis of further products of the metabolism of p-coumaric acid, both flavonoids and phenolic acids.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 6; 39-46
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
β-Glucan and Aronia (Aronia melanocarpa) Phenolics: Interactions During In Vitro Simulated Gastrointestinal Digestion and Adsorption
Autorzy:
Jakobek, Lidija
Ištuk, Jozo
Tomac, Ivana
Matić, Petra
Powiązania:
https://bibliotekanauki.pl/articles/2152155.pdf
Data publikacji:
2022-11-14
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
anthocyanin
bioaccessibility
chokeberry
flavonol
phenolic acid
Opis:
Interactions between phenolics and dietary fibers, such as β-glucan, are important for the bioactivities of phenolics. However, interactions between aronia phenolics and β-glucan in the digestion process, both promoted for their health benefits, have not been studied. The aim was to study the interactions between aronia phenolics and β-glucan in an in vitro simulated digestion and in the adsorption process. After extracting aronia phenolics with chemically- and enzymatically-assisted extraction, and characterizing the phenolics, the aronia extract was subjected to simulated oral, gastric, and intestinal digestion without or with β-glucan. Flavonol release increased throughout oral, gastric, and intestinal digestion, while the recovery of phenolic acids and anthocyanins after an increase in the gastric phase, decreased in the intestinal phase. β-Glucan entrapped phenolics, lowering the quantities of recovered phenolics. It also adsorbed aronia phenolics at pH 1.5, 3.0, and 7.0. In comparison to 15 and 30 mg/L concentrations of β-glucan, a solution with the lower concentration (15 mg/L) allowed for the entrapment of the higher quantity of phenolics and had high adsorption capacity. Entrapment of aronia phenolics by β-glucan is important for the bioaccessibility and concentration of phenolics that reach the lower parts of the digestive tract which depends on β-glucan concentration.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2022, 72, 4; 371-380
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biologically active compounds from selected aphyllophorales mycelial cultures
Autorzy:
Sułkowska-Ziaja, Katarzyna
Muszyńska, Bożena
Firlej, Anna
Powiązania:
https://bibliotekanauki.pl/articles/765035.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Basidiomycota
indole compounds
phenolic acids
sterols
Opis:
Grzyby z gromady Basidiomycota od dawna budzą zainteresowanie ze względu na występowanie w ich owocnikach szeregu związków o uznanych właściwościach leczniczych. Obiektem przeprowadzonych badań były kultury mycelialne dwóch gatunków grzybów afylloforoidalnych występujących na terenie Polski Hydnum repandum L. oraz Sparassis crispa (Wulf.) Fr. Celem podjętych badań była jakościowa i ilościowa analiza ekstraktów otrzymanych z kultur mycelialnych pod kątem występowania związków o udokumentowanej aktywności biologicznej: kwasów fenolowych, niehalucynogennych związków indolowych oraz steroli. Do oznaczeń wykorzystano wysokosprawną chromatografię cieczową faz odwróconych (RP-HPLC). Na podstawie analizy stwierdzono w ekstraktach z otrzymanej biomasy obecność ośmiu kwasów fenolowych: galusowego, gentyzynowego, p-hydroksybenzoesowego, kawowego, kumarowego, protokatechowego, syryngowego, wanilinowego oraz kwasu cynamonowego. Ilościowo dominującym związkiem był kwas protokatechowy w ilości 6,23 μg/g s.m. (H. repandum) oraz kwas hydroksybenzoesowy w ilości 4,52 μg/g s.m. (S. crispa). Spośród związków pochodnych indolu ilościowo oznaczono: indol, serotoninę, tryptaminę i tryptofan. Całkowita ich zawartość wynosiła 1,28 μg/g s. m. (ekstrakty z H. repandum) oraz 3,07 μg/g s.m. (ekstrakty z S.crispa). Ilościowo dominującym metabolitem był tryptofan. Spośród steroli oznaczono ergosterol w biomasie z kultur in vitro S. crispa (700,87 μg/g s.m). Uzyskane wyniki wskazują, że przebadane kultury mycelialne krajowych gatunków grzybów afylloforoidalnych są zdolne do akumulacji metabolitów aktywnych biologicznie.  
For a long time fungi belonging to Basidiomycota phylum have been in the center of attention because of the presence in their fruiting bodies of compounds with known therapeutic activity. Mycelial cultures of two aphyllophorales species occurring in Poland, Hydnum repandum L., and Sparassis crispa (Wulf.) Fr., were analyzed in our study. The main aim of the study was qualitative and quantitative analysis of extracts obtained from the mycelial cultures for the presence of known biologically active compounds, including phenolic acids, non-hallucinogenic indole compounds and sterols. For analyses a reversed-phase chromatography (RP-HPLC) method was used. The presence of eight phenolic acids including gallic, gentisic, p-hydroxybenzoic, caffeic, p-coumaric protocatechuic, syringic, vanillic and cinnamic acids was confirmed in the extracts obtained from the biomass. The quantitatively predominant metabolites in biomass from in vitro cultures of H. repandum and S. crispa were protocatechuic acid (6.23 μg/g DW) and p-hydroxybenzoic acid (4.52 μg/g DW). Derivatives of indole such as indole, serotonin, tryptamine and tryptophan were measured quantitatively. Their total content was estimated as 1.28 μg/g DW and 3.07 μg/g DW in H. repandum and S. crispa extracts, respectively. The major metabolite found was tryptophan. In addition, ergosterol, one of the sterols present in the biomass of in vitro cultures of S. crispa was analyzed (700.87 μg/g DW). The obtained results confirm the hypothesis that mycelial cultures of domestic species of aphyllophorales are able to accumulate biologically active metabolites. 
Źródło:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2014, 10; 73-79
1730-2366
2083-8484
Pojawia się w:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antioxidant activity of phenolic compounds of selected cold-pressed and refined plant oils
Aktywnosc antyoksydacyjna zwiazkow fenolowych wybranych olejow roslinnych tloczonych na zimno i rafinowanych
Autorzy:
Siger, A
Nogala-Kalucka, M.
Lampart-Szczapa, E.
Hoffman, A.
Powiązania:
https://bibliotekanauki.pl/articles/833891.pdf
Data publikacji:
2005
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
antioxidant activity
human health
phenolic compound
cold-pressed plant oil
free phenolic acid
plant oil
refined plant oil
Źródło:
Rośliny Oleiste - Oilseed Crops; 2005, 26, 2; 549-559
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphological and chemical variability within the population of common avens (Geum urbanum L.)
Zróżnicowanie morfologiczne i chemiczne w obrębie populacji kuklika pospolitego (Geum urbanum L.)
Autorzy:
Kuczerenko, A.
Krawczyk, M.
Przybyl, J.L.
Geszprych, A.
Angielczyk, M.
Baczek, K.
Weglarz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/71684.pdf
Data publikacji:
2011
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
morphological variability
chemical variability
plant population
common avens
Geum urbanum
herb
phenolic compound
tannin
phenolic acid
eugenol
Opis:
The aim of the study was an ex situ evaluation of morphological and chemical variability within the population of common avens. Plant height, number of shoots, stage of generative development (number of flower buds, flowers, and fruits), as well as weight of herb and underground organs were determined. In the raw materials total content of tannins and content of particular phenolic compounds identified by HPLC was determined. In underground organs also content of eugenol – the dominant constituent of essential oil was assessed. High diversity of morphological traits (especially weight of herb and underground organs) and the content of determined compounds (especially in herb) was found. Above- and underground organs differed in the composition and content of phenolic compounds. Underground organs were characterised by higher content of flavan-3-ols, but they did not contain chlorogenic acid, which was the dominant phenolic compound in herb.
Celem pracy była ocena zróżnicowania morfologicznego i chemicznego w populacji kuklika pospolitego w warunkach jego uprawy. Określono wysokość roślin, liczbę pędów kwiatowych, stopień rozwoju generatywnego (liczbę pąków kwiatowych, kwiatów i owoców) oraz masę ziela i organów podziemnych. W zebranych surowcach oznaczono ogólną zawartość garbników oraz zawartość poszczególnych związków fenolowych zidentyfikowanych przy użyciu HPLC. W organach podziemnych określono również zawartość eugenolu – głównego składnika olejku eterycznego. Stwierdzono wyraźne zróżnicowanie badanych osobników pod względem cech morfologicznych, a zwłaszcza masy ziela i organów podziemnych, a także zawartości oznaczanych związków, szczególnie w zielu. Organy nadziemne i podziemne różniły się pod względem składu i zawartości związków fenolowych. Organy podziemne charakteryzowały się wyższą zawartością flawan-3-oli. Nie stwierdzono w nich natomiast obecności kwasu chlorogenowego, który był dominującym związkiem fenolowym w zielu.
Źródło:
Herba Polonica; 2011, 57, 2
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dose and Time Dependent Response of HL - 60 Cells Against Newly Isolated Phenolic Compound from Pandanus odoratissimus
Autorzy:
Kamble, Abhaykumar
Reddy, Chinnappa
Kulkarni, Amitkumar
Powiązania:
https://bibliotekanauki.pl/articles/1194031.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cytotoxicity
HL- 60
MTT assay
Phenolic compound
Opis:
Bioassay guided chromatographic purification of methanolic extract of Pandanus odoratissium leaves afforded new phenolic compound. The isolated compound was identified as 4-(4-(3,4-dimethoxyphenyl) hexahyddrofuro[3,4-c]furan-l-yl)-2-methoxyphenyl acetate by the spectroscope methods. The puropose of this investigation was to check the effect of the phenolic compound 4-(4-(3, 4-dimethoxyphenyl)hexahyddrofuro[3,4-c]furan-l-yl)-2-methoxyphenyl acetate isolated pure compound, the human leukemia (HL-60) cell line as model to evaluate the cytoxicity of compound on the MTT assay. The results obtained from the parameter indicates the compound has significantly reduced the viability of HL-60 cells shows LD50 values of 21.24 ± 0.5 μg/mL, 10.25 ± 0.3 μg/mL and 5.2 ± 0.6 μg/mL, upon 12, 24 and 48 hours of exposure respective indicates a dose and dependent response relationship. The present study indicate the compound is highly cytotoxic to human leukemia (HL-60) cells supports it as an effective therapeutic agent against leukemia.
Źródło:
World Scientific News; 2015, 10; 44-58
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the phenolic contents and antibacterial activity of different concentrations of Onosma chlorotricum Boiss
Autorzy:
Dousti, B.
Nabipor, F.
Powiązania:
https://bibliotekanauki.pl/articles/2096818.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
phenolic compounds
flavonoids
antibacterial activity
Onosma chlorotricum
Opis:
Because of side effects and increasing resistance to antibiotics, considerable attention hasbeen given to extract sand biologically active compounds isolated from medicinal plants. In the present study, phytochemical screening and antibacterial activities of different concentrations of various extracts of Onosma chlorotricum were evaluated and compared with those of vancomycin and amikacin. Total phenolic and flavonoid contents and the antibacterial activity of methanol, n-hexane, and aqueous extracts (5 mg/ml to 0.156 mg/ml final concentration) of O. chlorotricum against Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli were evaluated using disc diffusion and microdilution methods. Total phenolic and flavonoid contents were determined according to the Folin-Ciocalteu and aluminum chloride colorimetric assays, respectively. The results showed that the total phenolic and flavonoid contents of these extracts ranged from 56.10 ± 0.13 to 74.12 ± 0.05 mg GAE/g dry extract and from 19.3 ± 0.6 to 23.20 ± 0.41 mg QE/g dry extract, respectively. The methanol extract with the highest phenolic and flavonoid content showed the highest antibacterial activity against all the tested bacterial strains, with the highest inhibition zone of 21 ± 0.7 mm and the lowest MIC and MBC values of 78.12 μg/ml for S. aureus. The antibacterial effects and the total phenolic content of O. chlorotricum were remarkable. The results suggest that the effects of methanol extract on wound healing could be tested in an animal model.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 4; 377-386
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ANALYSIS OF POLYPHENOLIC COMPOSITION AND STABILITY OF MAGISTRAL PREPARATION BASED ON SALVIAE OFFICINALIS FOLIUM
Autorzy:
Kowalczyk, Adam
Tuberoso, Carlo I.
Włodarczyk, Maciej
Fecka, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/895374.pdf
Data publikacji:
2020-02-29
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
flavonoids
phenolic acids
complexes
Salvia officinalis
magistral preparation
Opis:
A magistral preparation based on the sage leaf decoction or infusion is one of the most popular herbal prescription prepared in pharmacies in Lower Silesia (Poland) for gargling in the pharyngitis or mouth infections. Other components of this preparation are boric acid, aluminum(III) acetotartrate or Burow's solution, and glycerol. The study aimed to investigate the polyphenolic composition and relations between herbal and chemical ingredients that are present in this mixture in comparison with the traditional aqueous galenic forms – infusion and decoction. The analysis was performed using HPLC-DAD and ESI-MS methods. The main polyphenolic ingredients of sage leaf were rosmarinic acid and luteolin 7-O-β-glucuronide. The content of analyzed polyphenols was higher in the decoction than in the infusion. The pharmacological activity of the examined mixture results from the presence of boric acid, aluminum(III) salts and polyphenolic components of sage leaf. The study showed that in the presence of excess salts of aluminum(III) and boric acid, sage polyphenols are partially soluble in an aqueous medium (mainly phenolic acids) and complexed as precipitated sediment (especially flavonoids). The aqueous solutions of this preparation are cloudy, which suggests limited solubility of the formed complexes. Therefore, the therapeutic activity of the sage leaf magistral preparation should be associated with the presence of water soluble caffeic acid esters like rosmarinic acid. The influence of luteolin glycosides coordination complexes is not evident. The obtained results also confirm the stability of the examined formula in the conditions of cold storage (4-6 °C) within 7 days from its production.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 1; 131-143
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Total Phenolic, Flavonoid Contents and Antioxidant Activities of Honey and Propolis Collected from the Region of Laghouat (South of Algeria)
Autorzy:
Bakchiche, Boulanouar
Habati, Mounir
Benmebarek, Ahmed
Gherib, Abdelaziz
Powiązania:
https://bibliotekanauki.pl/articles/1114189.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Antioxidant Activity
DPPH
FRAP
Honey
Phenolic Extracts
Propolis
Opis:
The aim of this study was to determine total phenolic and flavonoid contents and to evaluate the antioxidant activities of two honeys and one propolis sample, collected from the region of Laghouat (South of Algeria). Total phenolic content were determined by using Folin-Ciocalteu reagent as gallic acid equivalent, while flavonoids content was assessed by means of the AlCl3 method as Rutin equivalent. Antioxidant activities of the honeys and propolis were examined by two different methods, namely, scavenging of free radical 2,2-diphenyl-1-picrylhydrazyl and reducing power. The antioxidant activities were compared with standard antioxidants such as Ascorbic acid, BHT and Trolox. The highest level of phenolic was 2385 mg Gallic acid per 100g sample, the highest level of flavonoid was 379 mg Rutin per 100g sample, while the highest protein content was 1177 mg per 100g sample, DPPH (0.026 mg/ml) and TEAC (0.0015) were detected especially in the propolis sample, indicating that it holds good antioxidant properties. A strong positive correlation was found between phenolics, flavonoids, DPPH and TEAC, indicating that in addition to total phenolic content, flavonoid and protein concentrations are good indicators of the antioxidant potential of propolis and honey.
Źródło:
World News of Natural Sciences; 2017, 11; 91-97
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bioactive properties of elderflowers (Sambucus nigra L.)
Autorzy:
Młynarczyk, Karolina
Walkowiak-Tomczak, Dorota
Powiązania:
https://bibliotekanauki.pl/articles/1178436.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Sambucus nigra L.
antioxidant activity
elderflower
phenolic compounds
Opis:
Elderflower is a valuable herbal raw material widely used in food, pharmaceutical and cosmetic industry. It is a rich source of bioactive compounds, such as polyphenols (e.g. chlorogenic acid, rutin, quercetin), that are responsible for their health benefits. Elderberry flowers demonstrate mainly diaphoretic, antipyretic, diuretic, antibacterial and anti-inflammatory properties and have been used in folk medicine as remedy for various ailments and diseases. The aim of the study was to evaluate selected bioactive properties of fresh and dried elderberry flowers, depending on the origin. Flowers were collected from three locations of wild elderberry shrubs and from three cultivars (Sampo, Haschberg, Samyl) growing on plantation. Methanolic extracts of fresh and dried flowers were analyzed in terms of the antioxidant activity using ABTS radical method and the total phenolic content by Folin-Ciocalteau reagent method. The results were statistically analyzed by Anova in Statistica 12.5 program. The obtained results indicate that drying process causes a deterioration of bioactive properties of elder flowers. Fresh flowers demonstrated significantly higher antioxidant activity as well as higher total phenolic content than dried flowers. Furthermore, flowers of wild elderberry differed from flowers of cultivated elderberry. In most cases, flowers of cultivars showed higher values of analyzed parameters compared to the wild elder flowers. The highest average antioxidant activity and the highest average content of total polyphenols was found in flowers of Sampo cultivar.
Źródło:
World Scientific News; 2017, 73; 114-118
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synergistic antibacterial effect of phenolic acids against Escherichia coli
Synergistyczne działanie przeciwbakteryjne kwasów fenolowych przeciwko Escherichia coli
Autorzy:
Synowiec, A.
Żyła, K.
Gniewosz, M.
Powiązania:
https://bibliotekanauki.pl/articles/13925559.pdf
Data publikacji:
2019
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
synergy
antibacterial effect
phenolic acid
Escherichia coli
biofilm
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 2019, 598; 51-62
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 191

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