Results 131 to 140 of about 1,094 (172)
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Gallotannins and flavonoids from Haematoxylon campechianum
Phytochemistry, 1996Two new compounds, 2,6-bis-O-digalloyl-3-O-galloylglucose and 2-O-trigalloyl-1,3,4,6-tetrakis-O-galloylglucose, along with four known gallotannins, were isolated and identified from the leaves of Haematoxylon campechianum. In addition, four known flavonoid and three simple phenolic compounds were also detected.
F E, Kandil +4 more
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Gallotannins are uncompetitive inhibitors of pancreatic lipase activity
Biophysical Chemistry, 2020Inhibition of pancreatic lipase (PL) is used to treat dyslipidemias and obesity. Phenolic compounds are highly bioactive molecules that can inhibit various enzymes. Our aim was to evaluate the inhibitory activity of selected phenolic compounds of increasing molecular complexity, namely, phenolic acids, mangiferin, penta-O-galloyl-β-d-glucose (PGG) and ...
Elena N. Moreno-Córdova +8 more
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Pyrethrin and Gallotannin in the Flowers of Peony
Nature, 1962FROM a light petroleum extract of dried petals of peony (Peonia albiflora Pall.) an oily substance (74.08 per cent C, 9.94 per cent H) was isolated by means of nitromethane extraction. It comprises 0.13 per cent of the dry weight of petals and 18 per cent of light petroleum extracts and shows in the ultraviolet spectral region maxima at 227 and 280 mµ ...
I. CHMIELEWSKA, Z. KASPRZYK
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Mechanistic Studies on the Antidiabetic Properties of Gallotannins
Current Pharmaceutical DesignThe escalating prevalence of type 2 diabetes (T2DM) has emerged as a global public health dilemma. This ailment is associated with insulin resistance and heightened blood glucose concentrations. Despite the rapid advancements in modern medicine, where a regimen of medications is employed to manage blood glucose effectively, certain treatments ...
Xueqing, Li +10 more
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Determination of Gallotannins in Beer by Gas Chromatography
Proceedings. Annual meeting - American Society of Brewing Chemists, 1971(1971). Determination of Gallotannins in Beer by Gas Chromatography. Proceedings. Annual meeting - American Society of Brewing Chemists: Vol. 29, Proceedings of the Annual Meeting 1971, pp. 171-182.
Helen Trachman, Leonard T. Saletan
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Biosynthesis and Biodegradation of Complex Gallotannins
1999According to an already classical definition formulated by Freudenberg in 1920,1 plant tannins are divided into condensed tannins (nowadays often referred to as proanthocyanidins), which are derived from C-C linked flavan-3-ol units, and into hydrolyzahle tannins. The latter are characterized by a central polyol moiety (β-D-glucose in most cases) whose
Ruth Niemetz +2 more
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Gallotannine und Ellagen-gerbstoffe
1956Wenn uber Fortschritte der Chemie der Gallotannine berichtet werden soll, so mus ein Ausgangspunkt gewahlt werden, von dem aus die neu gewonnenen Erkenntnisse geschildert werden. Das ist in unserem Falle nicht schwer. Emil Fischer hatte fur das chinesische Gallotannin (aus den Blattgallen von Rhus semialata) und das turkische Gallotannin (aus den ...
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Mass spectrometry for the direct analysis of gallotannins
1985Structural analysis of gallotannins is currently carried out in the following steps: - extraction from the natural Matrix; -chromatographic isolation/putrification; - chemical or enzymatic hydrolysis of the tannins; - instrumental/chemical analysis of the hydrolytic products.
R. Maffei Facino +3 more
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