Results 131 to 140 of about 2,044 (173)

Determination of gallotannin with rhodanine

Analytical Biochemistry, 1988
A reliable method for quantitative analysis of gallotannin in plants has been devised. Gallotannin is hydrolyzed with acid, and gallic acid in the hydrolysate is then assayed using rhodanine. This method is very specific; no interferences from other plant phenolics, including ellagic acid and condensed tannin, have been observed.
K H, Inoue, A E, Hagerman
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Biodegradation of gallotannins and ellagitannins

Journal of Basic Microbiology, 2006
AbstractNowadays, many researches have been made on gallotannin biodegradation and have gained great success in further utilization. Some of industrial applications of these findings are in the production of tannase, the biotransformation of tannic acid to gallic acid or pyrogallol and detannification of food and fodder. Although ellagitannins have the
Mingshu, Li, Yao, Kai, He, Qiang, Jia, Dongying   +3 more
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GALLOTANNIN. XIV. THE ACTION OF YEAST ON GALLOTANNIN

Journal of the American Chemical Society, 1925
M. Nierenstein, C. W. Spiers, C. Hadley
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Gallotannin Determination Using HPLC

2003
Pipette 1 ml of supernatant A (see Section 5) into the above mentioned culture tubes, remove acetone in a vacuum oven adjusted at 40°C (pressure 300 mbar). It takes about 3 h to remove acetone. Acetone can also be removed by flushing with nitrogen gas. Dry the contents completely in a heating block at 40°C by flushing with nitrogen.
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Gallotannin Determination by Rhodanine Assay

2003
The plant material was extracted as described in Section 2.2.4. The supernatant is designated as supernatant A.
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736. Gallotannins. Part VI. Turkish gallotannin

Journal of the Chemical Society (Resumed), 1962
R. Armitage, E. Haslam, R. D. Haworth, T. Searle   +3 more
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737. Gallotannins. Part VII. Tara gallotannin

Journal of the Chemical Society (Resumed), 1962
E. Haslam, R. D. Haworth, P. C. Keen
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Enzymatic Synthesis of Gallotannins and Related Compounds

1992
The onset of the 20th century marks the period when plant tannins, as many other natural products, became the subject of intense investigations aimed at the elucidation of their chemical structures, properties, and distribution in the Plant Kingdom. Among many researchers of that time, the name of E.
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Evaluation of a novel nano-size collagenous matrix film cross-linked with gallotannins catalyzed by laccase

Food Chemistry, 2021
Yanan Wang, Ruitong Dai, Kaixuan Zhao
exaly  

Ellagi- and gallotannins from Punica granatum heartwood.

Die Pharmazie, 2001
From the heartwood of Punica granatum L., the new 3'-O-methyl-3,4-methylenedioxyellagic acid, as well as eight known ellagitannins and gallotannins have been isolated and characterized. The structures were established by chromatography, chemical degradation and UV spectroscopy and confirmed by MS and NMR spectroscopy.
S A, el-Toumy, M S, Marzouk, H W, Rauwald   +2 more
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