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Wyszukujesz frazę "leaves extract" wg kryterium: Wszystkie pola


Wyświetlanie 1-2 z 2
Tytuł:
DIPSACUS FULLONUM L. LEAVES AND ROOTS - IDENTIFICATION OF THE COMPONENTS OF THE ESSENTIAL OILS AND ALPHA-AMYLASE INHIBITORY ACTIVITIES OF METHANOLIC EXTRACTS
Autorzy:
Witkowska-Banaszczak, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/895320.pdf
Data publikacji:
2018-08-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
essential oil composition
methanolic extract
alpha-amylase inhibition
Opis:
Abstract: Dipsacus fullonum L. syn. D. sylvestris is a biennial plant from the Dipsacaceae family. It grows in Europe, North Africa and Asia Minor. It has been used in folk medicine mainly to treat Lyme disease. This study was undertaken to identify and compare the components of the essential oils from dried and fresh roots, which are usually applied as medicinal agents, as well as those of the essential oils from dried and fresh leaves, used less frequently. The essential oils from the Dipsacus fullonum leaves and roots were analysed by the GC and GC-MS analysis. 18 components were identified in the essential oil from the fresh leaves, whereas 37 were recognised in the oil from the dried leaves; 10 components were identified in the essential oil from the fresh roots and 40 in that from the dried roots. Phytol was the main component in the essential oil from the leaves, whereas n-hexadecanoic acid was predominant in the roots. The α -amylase inhibition has been proven for methanolic extracts of D. fullonum leaves and roots. The strongest activity was demonstrated by the extract from fresh leaves of D. fullonum and showed an effect about one hundred times weaker than acarbose.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 4; 951-957
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ALLIUM URSINUM L. LEAVES COMPONENTS MODIFIED THE PHYSICO-CHEMICAL PROPERTIES OF RED BLOOD CELLS PROTECTING THEM FROM THE EFFECTS OF OXIDATIVE STRESS
Autorzy:
Cyboran-Mikołajczyk, Sylwia M.
Kleszczyńska, Halina
Oszmiański, Jan
Pasławski, Robert
Powiązania:
https://bibliotekanauki.pl/articles/895386.pdf
Data publikacji:
2019-06-28
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
erythrocytes
fluidity
transmembrane potential
bear garlic extract
AAPH oxidation
biological membrane
Opis:
The aim of the study is to determine the antioxidant activity and influence of Allium ursinum L. leaf extract on physicochemical and electrical properties of erythrocytes in order to help clarify its capacity to alleviate oxidative stress. The phenolic compounds were isolated from the leaves of bear garlic. The composition of the extract is well documented and was earlier analyzed quantitatively and qualitatively by UPLC methods. The impact of the extract constituents on the erythrocyte membrane properties was determined on the basis of its osmotic fragility, fluidity, organization of the hydrophilic area and transmembrane potential with spectrophotometric and fluorimetric methods. Furthermore, the effect of the extract on the level of membrane lipid oxidation and also on the extent of hemolysis of erythrocytes subjected to oxidation induced by AAPH compound was determined. The study showed that the extract at 40 µg/mL lowers the level of erythrocyte hemolysis caused by 76.8% oxidation. In addition, the extract protects lipid membranes against hemolysis better than ascorbic acid. The extract, in examined range of concentrations, did not induce hemolysis of erythrocytes, caused small decrease in their electric potential and osmotic fragility, and increased disorder of the polar heads of membrane lipids. The high antioxidant efficiency and determined effects of the interaction of bear garlic leaf extract with the erythrocyte membrane suggest that its constituents may not only protect cells against free radicals but also mitigate the effects of oxidative stress.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 3; 483-491
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
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