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betula neoalaskana/antioksidant
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Bioactivity-guided isolation of antioxidant triterpenoids from Betula platyphylla var. japonica bark.
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The bark of Betula platyphylla var. japonica (Betulaceae) has been used to treat pneumonia, choloplania, nephritis, and chronic bronchitis. This study aimed to investigate the bioactive chemical constituents of the bark of B. platyphylla var. japonica. A bioassay-guided fractionation and chemical
Hepatoprotective, superoxide scavenging, and antioxidative activities of aromatic constituents from the bark of Betula platyphylla var. japonica.
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The 50% aqueous methanolic extract from the bark of Betula platyphylla SUKATCHEV var. japonica (MIQ). HARA was found to show potent inhibitory activity on the liver-injury induced by CCl4 or D-galactosamine (D-GalN)/lipopolysaccharide as well as O2- scavenging and antioxidative activities. From the
Antioxidant Activity of Dry Birch (Betula Pendula) Leaves Extract.
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Interactive effect of elevated temperature and O3 on antioxidant capacity and gas exchange in Betula pendula saplings.
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We studied the effects of slightly elevated temperature (T), O(3) concentration (O(3)) and their combination (T + O(3)) on the antioxidant defense, gas exchange and total leaf area of Betula pendula saplings in field conditions. During the second year of the experiment, T enhanced the total leaf
Antioxidant, antimicrobial activity and inhibition of α-glucosidase activity by Betula alnoides Buch. bark extract and their relationship with polyphenolic compounds concentration.
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Betula alnoides has been widely used in local traditional medicinal treatment for a variety of diseases, wounds and to cure diabetes. The air-dried, powdered (200 g) bark was extracted with 80% methanol at room temperature. The combined 80% methanolic extract was partitioned with organic solvents to
Micro 2D-TLC of Selected Plant Extracts in Screening of Their Composition and Antioxidative Properties.
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Micro two-dimensional separations were performed on polar bonded stationary phases of the type cyanopropyl-silica using non-aqueous eluents (polar modifier dissolved in n-heptane) as the first direction eluents and aqueous eluents (organic modifier-MeOH dissolved in water) as the second direction
In vitro assessment of selected Korean plants for antioxidant and antiacetylcholinesterase activities.
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BACKGROUND
Antiacetylcholinesterase (AChE) drugs have been a main therapeutic treatment for Alzheimer's disease because increased AChE levels play a key role in reducing neurotransmission.
OBJECTIVE
Extracts from 35 Korean plants were selected and screened for antioxidant and anti-cholinesterase
Antioxidative and antifungal response of woody species to environmental conditions in the urban area.
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The complexity of ecological conditions in urban areas imposes the plant species need for the development of various biochemical and physiological adaptive strategies. The aim of our research was to examine the antioxidative and antifungal metabolism of species Pinus nigra, Picea omorika, Tilia
Antioxidant responses to simulated acid rain and heavy metal deposition in birch seedlings.
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This study measured the responses of different anti-oxidants in 2-year-old birch (Betula pendula Roth) seedlings subjected to simulated acid rain (pH 4.0) and heavy metals (Cu/Ni), applied alone or in combination for 2 months. The applied concentrations of pollutants did not significantly affect
Evaluation of the antioxidant activity of Betula pendula leaves extract and its effects on model foods.
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BACKGROUND
Betula pendula Roth (Betulaceae) exhibits many pharmacological activities in humans including anticancer, antibacterial, and antiviral effects. However, the antioxidant activity of BP towards lipid degradation has not been fully determined.
OBJECTIVE
The BP ethanol and methanol extracts
Antioxidant and anticancer activity of extract from Betula platyphylla var. japonica.
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The antioxidant and anticancer properties of a medicinal plant, Betula platyphylla var. japonica were investigated. The total methanol extract of B. platyphylla var. japonica had protective effects against hydrogen peroxide (H2O2) in the Chinese hamster lung fibroblast (V79-4) cell line and induced
Antioxidant, toxicological and antiproliferative properties of Canadian polyphenolic extracts on normal and psoriatic keratinocytes.
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OBJECTIVE
In a first attempt for establishing the possible utilization of polyphenolic extracts from barks of Canadian wood species in psoriasis treatment, we aimed to study (a) their antioxidant capacity, (b) their toxicological properties on normal human keratinocytes (NHK), and (c) their effect
Antimicrobial and antioxidant properties of Betula aetnensis Rafin. (Betulaceae) leaves extract.
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This study aimed to evaluate the antimicrobial effects, the radical scavenging activity (by DPPH and ABTS tests) and the antioxidant capacity (by β-carotene bleaching test) of Betula aetnensis leaves extract. The antimicrobial activity was tested against 14 Gram-positive clinical strains, 2 ATCC
The Antioxidant Activities of Betula etnensis Rafin. Ethanolic Extract Exert Protective and Anti-diabetic Effects on Streptozotocin-Induced Diabetes in Rats
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Pathophysiological mechanisms correlating diabetes mellitus with associated complications are still not completely clear, even though oxidative stress seems to play a pivotal role. Literature data suggest that cell damages induced by hyperglycemia, although multifactorial, have a common pathway in
Expression of senescence-associated genes in the leaves of silver birch (Betula pendula).
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Development was monitored throughout the entire life span of silver birch (Betula pendula Roth.) leaves. The focus was on senescence-related changes in photosynthesis and gene expression. The youngest fully developed leaves were compared with older senescing leaves in two silver birch lines: the
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