Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Georg G. Gross"'
Autor:
Georg G. Gross, Ruth Niemetz
Publikováno v:
Phytochemistry. 62:301-306
A new enzyme has been isolated from leaves of the weed Tellima grandiflora (fringe cups, Saxifragaceae) that catalyzed the O 2 -dependent oxidation of 1,2,3,4,6-penta- O -galloyl-β- d -glucopyranose to tellimagrandin II, the first intermediate in th
Publikováno v:
Planta. 216:168-172
Current enzyme studies on the biosynthesis of gallotannins with cell-free extracts from leaves of staghorn sumac (Rhus typhina L.) revealed the existence of two new beta-glucogallin-dependent galloyltransferases (EC 2.3.1.-) that preferentially catal
Gallotannin biosynthesis: β-glucogallin: hexagalloyl 3-O-galloyltransferase from Rhus typhina leaves
Autor:
Georg G. Gross, Ruth Niemetz
Publikováno v:
Phytochemistry. 58:657-661
Leaves of staghorn sumac (Rhus typhina) contain several galloyltransferases that catalyze the beta-glucogallin dependent transformation of 1,2,3,4,6-pentagalloylglucose to gallotannins. Among these, an enzyme has been isolated that preferentially acy
Autor:
Petra Grundhöfer, Georg G. Gross
Publikováno v:
Zeitschrift für Naturforschung C. 55:582-587
The enzyme, β-glucogallin: 1,2,3,6-tetra-O-galloyl- β-ᴅ-glucose 4-O-galloyltransferase, which catalyzes the last common step in the biosynthesis of the two subclasses of hydrolyzable tannins, i.e. gallotannins and ellagitannins, was purified 868-
Autor:
Ruth Niemetz, Georg G. Gross
Publikováno v:
Journal of Plant Physiology. 155:441-446
Summary Leaves of Saghorn sumac (Rhus typhina) contain. several isoenzymes that catalyze the R-glucogallin (1-O-galloyl-β-D-glucose)-dependent transformation of 1,2,3,4,6-penta-O-galloyl-β-D-glucose to complex gallotannins. Among these, a new gallo
rd This book has been developed from the proceedings of the 3 Tannin Confer ence honoring Professor Edwin Haslam, Department of Chemistry, University of Sheffield, for his efforts and outstanding contributions to the field of plant polyphe nols.
Autor:
Ruth Niemetz, Georg G. Gross
Publikováno v:
Phytochemistry. 49:327-332
An enzyme from leaves of staghorn sumac (Rhus typhina) that catalysed the galloylation of 1,2,3,4,6-penta-O-galloyl-β-d-glucose to the gallotannin, 3-O-digalloyl-1,2,4,6-tetra-O-galloyl-β-d-glucose, was purified more than 500-fold to apparent homog
Publikováno v:
Phytochemical Analysis. 9:107-111
Polyclonal antibodies were raised against covalently protein-coupled 1,2,3,4,6-pentagalloylglucose, the common and immediate precursor of the two subclasses of hydrolyzable tannins, i.e. the polyphenolic gallotannins and ellagitannins. The crude anti
Autor:
Jörg U. Niehaus, Georg G. Gross
Publikováno v:
Phytochemistry. 45:1555-1560
An enzyme from leaves of pedunculate oak ( Quercus robur , syn. Q. pedunculata ) that catalysed the efficient hydrolysis of galloylglucose esters and related compounds was purified more than 1900-fold in 67% yield to apparent homogeneity. For the pur
Publikováno v:
Phytochemistry. 66:2124-2126