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polygonatum/antiossidante
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Pagina 1 a partire dal 31 risultati
Antioxidant and antimicrobial potential of polysaccharides sequentially extracted from Polygonatum cyrtonema Hua.
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We examined the antioxidant and antimicrobial attributes of Polygonatum cyrtonema Hua polysaccharides (HBSS, CHSS, DASS, CASS). The UV spectra and FT-IR results showed the purity and acidic nature of polysaccharides with β-configurations. DASS (78.585% hydroxyl radical scavenging, 92.794% ABTS
Chemical characterization of constituents from Polygonatum cyrtonema Hua and their cytotoxic and antioxidant evaluation.
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Twenty-four compounds were isolated from the roots of Polygonatum cyrtonema Hua, including a new octopamine dimer, named trans-bis(N-feruloyl)octopamine (1). The structure was established on the basis of spectroscopic and chemical methods. All the extracts and compounds were evaluated for cytotoxic
Antioxidant profile of constituents isolated from Polygonatum verticillatum rhizomes.
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The purpose of the current study was to estimate the antioxidant profile of two compounds, diosgenin and santonin, isolated from Polygonatum verticillatum rhizomes. Stable free radical, 2, 2-diphenyl-1-picrylhydrazyl and reducing power assays were employed for this purpose. The results showed
Variability in morphology, phytochemicals, and antioxidants in Polygonatum verticillatum (L.) All. populations under different altitudes and habitat conditions in Western Himalaya, India.
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Polygonatum verticillatum (L.) All. is one among eight species of Astavarga group of plants known for its vitality strengthening properties and used in different herbal formulations. However, systematic investigation on morphology and antioxidant phytochemicals in relation to different environmental
Quantitative analysis of flavonols, flavonol glycoside and homoisoflavonoids in Polygonatum verticillatum using UHPLC-DAD-QTOF-IMS and evaluation of their antioxidant potential.
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Total phenolic content, antioxidant and antimicrobial activities of some medicinal plants.
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Crude extracts from Inula aucherana, Fumaria officinalis, Crocus sativus, Vicum album, Tribulus terestris, Polygonatum multiflorum, Alkanna tinctoria and Taraxacum officinale were screened for their in vitro antioxidant and antimicrobial properties. Total phenolic content of extracts from these
Antioxidant activities of different extracts and homoisoflavanones isolated from the Polygonatum odoratum.
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The antioxidant activities of five extracts from Polygonatum odoratum rhizomes were measured by three antioxidant assays in vitro. The crude flavonoid extracts (FE) exhibited the strongest antioxidant activity among all extracts with IC(50/DPPH) = 0.06 ± 0.035 mg mL(-1), IC(50/OH) = 0.68 ± 0.030 mg
Evaluation of phenolic composition, antioxidant, anti-inflammatory and anticancer activities of Polygonatum verticillatum (L.).
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Polygonatum verticillatum (L.) All. (Ruscaceae), one of the Ashtawarga plants, is widely used for treatment of various ailments. The present study was undertaken to determine the phenolic composition, antioxidant, anti-inflammatory and anticancer activities of several extracts (petroleum ether,
Syringaresinol‑di‑O‑β‑D‑glucoside, a phenolic compound from Polygonatum sibiricum, exhibits an antidiabetic and antioxidative effect on a streptozotocin‑induced mouse model of diabetes.
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Syringaresinol‑di‑O‑β‑D‑glucoside (SOG) is a phenolic compound extracted from Polygonatum sibiricum. The present study aimed to investigate the antidiabetic effect of SOG on streptozocin (STZ)‑induced diabetic mice and determine the potential underlying mechanisms. In the present study, fasting
Health Promotion Potential of Vegetables Cultivated in Northern Thailand: A Preliminary Screening of Tannin and Flavonoid Contents, 5α-Reductase Inhibition, Astringent Activity, and Antioxidant Activities.
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Many of scientific evidences suggest that regular consumption of fruits and vegetables can prevent chronic diseases. In Northern Thailand, there are many vegetables that are usually consumed by local people. In this study, 17 local vegetables were selected and extracted with 95% ethanol. The
Microwave-Assisted Degradation of Polysaccharide from Polygonatum sibiricum and Antioxidant Activity.
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Four polysaccharide fractions (P-1: 71.40%, P-2: 1.95%, P-3: 1.14%, P-4: 1.64%) were isolated from crude Polygonatum sibiricum polysaccharide (PSP), processed by water extraction, ethanol precipitation, and further separated with diethylaminoethyl cellulose-52 anion-exchange chromatography. Their
Sensitive characterization of polyphenolic antioxidants in Polygonatum odoratum by selective solid phase extraction and high performance liquid chromatography-diode array detector-quadrupole time-of-flight tandem mass spectrometry.
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The complexity of natural products always leads to the co-elution of interfering compounds with bioactive compounds, which then has a detrimental effect on structural elucidation. Here, a new method, based on selective solid phase extraction combined with 1,1-diphenyl-2-picrylhydrazyl radical (DPPH)
Antioxidant homoisoflavonoids from Polygonatum odoratum.
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Polygonatum odoratum is widely used as a traditional food supplement and herbal medicine with strong antioxidant activity. However, systematic investigation of its antioxidants was limited. Ethanol extract of P. odoratum was fractioned on macroporous absorptive resin (D101) column. A bioassay-guided
Antioxidant and antifatigue activities of Polygonatum Alte-lobatum Hayata rhizomes in rats.
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Polygonatum alte-lobatum Hayata, a rhizomatous perennial herb, belongs to the Liliaceae family and is endemic to Taiwan. We investigated the antioxidant and anti-fatigue activities of P. alte-lobatum in exercised rats. Levels of polyphenols, flavonoids and polysaccharides and
Polygonatum rhizoma affects antioxidant defense systems without changing mRNA expression in diet-induced hypercholesterolemic rabbits.
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This study was conducted to determine the antioxidant effects of a Polygonatum extract compared with the major antioxidant, vitamin E, in rabbits fed a high-cholesterol diet. Rabbits were given a high-cholesterol (0.5%, wt/wt) diet with vitamin E (0.03%, wt/wt) or a Polygonatum extract (0.05%,
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