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Wyświetlanie 1-4 z 4
Tytuł:
ANALYTICAL PROCEDURE ELABORATION OF TOTAL FLAVONOID CONTENT DETERMINATION AND ANTIMICROBIAL ACTIVITY OF BEE BREAD EXTRACTS
Autorzy:
Hudz, Nataliia
Yezerska, Oksana
Grygorieva, Olga
Brindza, Ján
Felsöciová, Soňa
Kačániová, Miroslava
Wieczorek, Piotr P.
Powiązania:
https://bibliotekanauki.pl/articles/895653.pdf
Data publikacji:
2019-06-28
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
antimicrobial activity
flavonoids
extracts
bee bread
Opis:
SSixteen ethanolic extracts were obtained from seven different bee bread samples. The total flavonoid content in the extracts was determined by aluminium-chloride method and was in the range of 8.3 mg/L±6.24% to 195.3 mg/L±1.35% and 28.8 mg/L±19.33% to 603.3 mg/L±4.64% with reference to quercetin and rutin, respectively. The relative standard deviations (RSD) for parallel measurements for the calibration curves of quercetin dehydrate and rutin trihydrate were in the range of 0.51% to 9.39% and 5.02% to 19.91%, respectively. The RSD for parallel measurements for the extracts with reference to quercetin dihydrate and rutin trihydrate were in the range of 0.23% to 11.64% and 4.64% 19.33%, respectively. The total flavonoid content mainly depended on a ratio of bee bread to 50% ethanol and technology of obtaining bee bread. The significant differences between results were statistically confirmed. The best antibacterial activity of bee bread extracts was found against Bacillus cereus CCM 2010, Clostridium perfringens CCM 4435, and Staphylococcus aureus subsp. aureus CCM 4223. The activity of the bee bread extracts against Gram negative bacteria, Aspergillus and Penicillium genera was lower with moderate anticandidal activity. The obtained results indicated that it was very important to employ extracts with a high content of bee bread in 50% ethanol (1:5, 1:10). According to the results of this study, bee bread is a product which is rich in flavonoids and with good antibacterial activity against Gram positive bacteria and can be considered as a raw material for development of diet supplements and antimicrobial medicinal products
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 3; 439-452
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
PHYTOCHEMICAL ANALYSIS AND BIOLOGICAL EVALUATION OF FORSSKAOLEA VIRIDIS AERIAL PARTS
Autorzy:
El-Bassossy, Taha A.
Ahmed, Fatma A.
El-Mesallamy, Amani M.
Powiązania:
https://bibliotekanauki.pl/articles/895657.pdf
Data publikacji:
2019-10-30
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
antimicrobial
flavonoids
phenolics
antitumor
Forsskaolea viridis
Opis:
The chemical investigation of the chloroform and ethyl acetate extracts of the aerial parts of Forsskaolea viridis Ehrenb. ex Webb (Family: Urticaceae) led to isolation eight compounds for the first time from this plant, while two phenolic compounds, identified as p-coumaric and caffeic acids as well as six flavonoid compounds identified as 5-hydroxy-6,7,3',4'-tetramethoxy flavone, chrysoeriol, acacetin, chrysoeriol-7-O-β-D-glucoside, kaempferol-3-O-(2"-O-E--p-coumaroyl)-β-D-glucoside and isovetixin. The chemical structure of the isolated compounds was established by spectroscopic methods including UV, MS, 1H-NMR, and 13C-NMR. Antimicrobial, antioxidant and cytotoxic activities of the ethyl acetate and chloroform extracts were evaluated. The ethyl acetate extract exhibited strong antimicrobial activity (12-30 mm) against the tested strains. The ethyl acetate and chloroform extracts showed fair antioxidant and cytotoxicity.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 5; 815-823
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CHEMICAL COMPOSITION OF THE ESSENTIAL OIL AND FLAVONOIDS OF THYMUS SERPYLLUM L., GROWING ON TERRITORY OF THE EAST KAZAKHSTAN
Autorzy:
Tazabayeva, Kulyash A.
Sylibaeva, Batiyash
Powiązania:
https://bibliotekanauki.pl/articles/895645.pdf
Data publikacji:
2018-12-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
essential oils
flavonoids
anticancer activity
Thymus serpyllum
Opis:
Thymus serpyllum L. (T.serpyllum) has a great interest as a potential plant component, which is used in the production of fermented milk products with anticancer effect. The plant material was collected at the flowering stage. Chemical composition of essential oil and flavonoids from the aerial parts of the T. serpyllum, grown in the Southern Altai of the East Kazakhstan region, has been investigated for the first time. Output of the essential oil received from the aerial part of the plant in the flowering stage was on average 0,2%. Forty-one compounds were identified in T. serpyllum essential oil, which accounts for 96, 1% of the total oil. The main components of the oil were thymol (41,8%), γ-terpinene (15,3%), o-cymene (10,9%). Apart from the composition of essential oils, there were shown some flavonoids, such asapigenin 7 glucoside (0.24 % of dried plant material), luteolin (0,039 %), quercetin (0,006 %), which demonstrated a cytotoxic effect on cancer cells. In our experiments, luteolin had greater cytotoxic effect on cancer cells HCT-15 than quercetin. IC50 value of quercetin (100 μM) was higher than that of luteolin (50 μM).
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 6; 1329-1337
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
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
    Wyświetlanie 1-4 z 4

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