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ampelopsis/антиоксиданты
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Страница 1 от 42 полученные результаты
Optimization of Surfactant-Mediated, Ultrasonic-assisted Extraction of Antioxidant Polyphenols from Rattan Tea (Ampelopsis grossedentata) Using Response Surface Methodology.
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BACKGROUND
Rattan tea is a medicinal plant that has been used for many years for the treatment of inflammation, fatty liver, tumor, diabetes, and hyperlipidemia.
OBJECTIVE
A green and novel approach based on surfactant-mediated, ultrasonic-assisted extraction (SM-UAE) was developed for the
Antioxidant activity of vine tea (Ampelopsis grossedentata) extract on lipid and protein oxidation in cooked mixed pork patties during refrigerated storage.
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To prevent oxidation and maintain the quality of meat products, it is essential to add antioxidants. The aim of this work was to investigate the antioxidant activity of vine tea (Ampelopsis grossedentata) extract (VTE) and evaluate the effects of VTE on the quality characteristics and lipid
Chemical composition, antimicrobial and antioxidant activities of essential oil from Ampelopsis megalophylla.
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Chemical composition, antimicrobial and antioxidant activities of the essential oil of Ampelopsis megalophylla were evaluated in this research. GC-MS analysis of the essential oil revealed 42 compounds, representing 88.54% of the oil. The major compounds were borneol (10.81%), α-pinene (6.74%) and
Separation and purification of antioxidants from Ampelopsis heterophylla by counter-current chromatography.
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In this study, bioactive components from Ampelopsis heterophylla were separated by counter-current chromatography (CCC). The antioxidant activity of the crude extract was initially evaluated by an online HPLC method. Five compounds in the crude extract exhibited good antioxidant activities, namely,
Physicochemical properties, in vitro antioxidant activities and inhibitory potential against α-glucosidase of polysaccharides from Ampelopsis grossedentata leaves and stems.
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In the present study, polysaccharides named ALPS and ASPS were isolated from Ampelopsis grossedentata leaves and stems, respectively. Physicochemical properties, in vitro antioxidant activities and the inhibitory effects on α-glucosidase of ALPS and ASPS were investigated. It was found that both
At-line hyphenation of high-speed countercurrent chromatography with Sephadex LH-20 column chromatography for bioassay-guided separation of antioxidants from vine tea (Ampelopsis grossedentata).
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Vine tea (Ampelopsis grossedentata), a widely used healthy tea, beverage and herbal medicine, exhibited strong antioxidant activity. However, systematic purification of antioxidants, especially for those with similar structures or polarities, is a challenging work. Here, we present a novel at-line
Supercritical carbon dioxide extraction of bioactive compounds from Ampelopsis grossedentata stems: process optimization and antioxidant activity.
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Supercritical carbon dioxide (SC-CO(2)) extraction of bioactive compounds including flavonoids and phenolics from Ampelopsis grossedentata stems was carried out. Extraction parameters such as pressure, temperature, dynamic time and modifier, were optimized using an orthogonal array design of L(9)
Investigation of free amino acid, total phenolics, antioxidant activity and purine alkaloids to assess the health properties of non-Camellia tea.
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To find novel functional beverages from folk teas, 33 species of frequently used non-Camellia tea (plants other than Camellia) were collected and compared with Camellia tea (green tea, pu-erh tea and black tea) for the first time. Data are reported here on the quantities of 20 free amino acids
Antioxidant Properties of a Traditional Vine Tea, Ampelopsis grossedentata.
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Ampelopsis grossedentata, also called vine tea, has been used as a traditional beverage in China for centuries. Vine tea contains rich polyphenols and shows benefit to human health, but the chemical and antioxidant properties of vine tea polyphenols from different locations remain unclear.
Antioxidant activities of Vine Tea (Ampelopsis grossedentata) extract and its major component dihydromyricetin in soybean oil and cooked ground beef.
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Antioxidant activities of Ampelopsis grossedentata extract (EXT) and its major component dihydromyricetin (DHM) were analysed and compared with BHA in two model systems, soybean oil and cooked ground beef. Oxidation of soybean oil samples was measured using peroxide value, anisidine value, headspace
Recrystallization of dihydromyricetin from Ampelopsis grossedentata and its anti-oxidant activity evaluation.
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A fast and efficient method for purification of dihydromyricetin (3,5,7,3',4',5'-six hydroxy-2,3-dihydro flavonol; DMY) from Ampelopsis grossedentata was created by crystallization eight times at 25°C, and a purity of 98% was finally achieved. The purified DMY exhibited high oxygen radical
Antioxidant profiling of vine tea (Ampelopsis grossedentata): Off-line coupling heart-cutting HSCCC with HPLC-DAD-QTOF-MS/MS.
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Vine tea with strong antioxidant activity is commonly consumed as healthy tea/beverage. However, detailed information about its antioxidants is incomplete. Here, off-line hyphenation of heart-cutting high-speed countercurrent chromatography (HSCCC) with high performance liquid chromatography-diode
Evaluation of antioxidant properties of the different tissues of vine tea (Ampelopsis grossedentata) in stripped canola oil and sunflower oil.
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The leaves of Ampelopsis grossedentata have a long history of use as a health tea and herbal medicine. Data on the distribution of active metabolites in, and antioxidant capacities of, different vine tea tissues remain incomplete. The aim of this work was to investigate the content of metabolites
[Investigation on the antioxidant activities in vitro of extracts from Ampelopsis humilifolia var. heterophylla and A. sinica].
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The antioxidant activities of Ampelopsis humilifolia var. heterophylla and A. sinica, antiviral medicinal plants used in Hubei province of China, have been investigated using both enzymatic and non-enzymatic antioxidant assays in vitro. Extracts from the both plants inhibited xanthine oxidase and
Antioxidant activity of Porcelainberry (Ampelopsis brevipedunculata (Maxim.) Trautv.).
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The stem and root of Porcelainberry (Ampelopsis brevipedunculata (Maxim.) Trautv.) (AB) was traditionally used as an anti-inflammatory, diuretic and anti-hepatotoxic agent in folk medicine. In this study, cell-free and cell culture systems were employed to investigate the antioxidant activity of the
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