The Biosynthetic Pathway of Curcuminoid in Turmeric (Curcuma longa) as Revealed by ^<13>C-Labeled Precursors
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概要
- 論文の詳細を見る
In order to investigate the biosynthesis of curcuminoid in rhizomes of turmeric (Curcuma longa), we established an in vitro culture system of turmeric plants for feeding 13C-labeled precursors. Analyses of labeled desmethoxycurcumin (DMC), an unsymmetrical curcuminoid, by 13C-NMR, revealed that one molecule of acetic acid or malonic acid and two molecules of phenylalanine or phenylpropanoids, but not tyrosine, were incorporated into DMC. The incorporation efficiencies of the same precursors into DMC and curcumin were similar, and were in the order malonic acid > acetic acid, and cinnamic acid > p-coumaric acid >> ferulic acid. These results suggest the possibility that the pathway to curcuminoids utilized two cinnamoyl CoAs and one malonyl CoA, and that hydroxy- and methoxy-functional groups on the aromatic rings were introduced after the formation of the curcuminoid skeleton.
- 社団法人 日本農芸化学会の論文
- 2008-07-23
著者
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KUMAGAI Hidehiko
Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University
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Kumagai Hidehiko
Research Institute For Bioresources And Biotechnology Ishikawa Prefectural University
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Imai Shinsuke
Somatech Center House Foods Corporation
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SETO HARUO
Department of Applied Biology and Chemistry, Tokyo University of Agriculture
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Kita Tomoko
Somatech Center House Foods Corporation
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Seto Haruo
Department Of Applied Biology And Chemistry Tokyo University Of Agriculture
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SAWADA Hiroshi
Somatech Center, House Foods Corporation
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Sawada Hiroshi
Somatech Center House Foods Corporation
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Imai Shinsuke
Somatech Center House Foods Corp.
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