Synthesis of hydroxycinnamic acid esters of betacyanins via 1-O-acylglucosides of hydroxycinnamic acids by protein preparations from cell suspension cultures of Chenopodium rubrum and petals of Lampranthus sociorum |
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Authors: | Maria Bokern Dieter Strack |
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Institution: | (1) Botanisches Institut der Universität zu Köln, Gyrhofstrasse 15, D-5000 Köln 41, Federal Republic of Germany;(2) Institut für Pharmazeutische Biologie der Technischen Universität Braunschweig, Mendelssohnstrasse 1, D-3300 Braunschweig, Federal Republic of Germany |
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Abstract: | Protein preparations from cell suspension cultures of Chenopodium rubrum L. and petals of Lampranthus sociorum (L.Bol.) N.E.Br. (Mes.C.L.Bol.) catalyzed the formation of acylated betacyanins, i.e. celosianin I and II (p-coumaroyl-and feruloylamaranthins) and lampranthin I and II (p-coumaroyl- and feruloylbetanins), from 1-O-(p-coumaroyl)-and 1-O-feruloyl--glucoses as acyldonors and the respective acceptor molecules amaranthin (betanidin 5-O-sophorobiuronic acid = betanidin 5-O--12]-glucuronosyl--glucoside) and betanin (betanidin 5-O--glucoside). The enzymes involved could generally be classified as 1-O-hydroxycinnamoyl--glucose:betanidinglycoside O-hydroxycinnamoyltransferases (EC 2.3.1.-).Abbreviations HCA
hydroxycinnamic acid
- HCA
hydroxycinnamoyl (=hydroxycinnamic acid-ester moiety)
- HPLC
high-performance liquid chromatography
- TLC
thin-layer chromatography |
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Keywords: | Acylated betacyanin (celosianin lampranthin) Acyltransferase Betalain (amaranthin betanin) Chenopodium Hydroxycinnamic acid Lampranthus |
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