The present study established a system for comprehensive metabolic analysis of the cinnamate/monolignol and lignan pathways by the use of a stable-isotope-dilution method. The system was successfully applied to characterization of the pathways in Carthamus tinctorius cv. Round-leaved White maturing seeds in combination with administration of stable-isotope-labelled precursors. Experimental results obtained using this technique strongly suggested the intermediacy of ferulic acid in lignan biosynthesis in the plant.
Synthesis of deuterium‐labeled cinnamic acids: Understanding the volatile benzenoid pathway in the flowers of the Japanese loquat
<scp>
<i>Eriobotrya japonica</i>
</scp>
作者:Bunta Watanabe、Shiori Nishitani、Takao Koeduka
DOI:10.1002/jlcr.3933
日期:2021.8
Cinnamicacids are widely distributed in plants, including crops for human use, and exhibit a variety of activities that are beneficial to human health. They also occupy a pivotal position in the biosynthesis of phenylpropanoids such as lignins, anthocyanins, flavonoids, and coumarins. In this context, deuterium-labeled cinnamicacids have been used as tracers and internal standards in food and medicinal
Identification of Dehydro-Ferulic Acid-Tyrosine in Rye and Wheat: Evidence for a Covalent Cross-Link between Arabinoxylans and Proteins
作者:Michael Piber、Peter Koehler
DOI:10.1021/jf050395b
日期:2005.6.1
compound was detected. Comparison of its chromatographic and mass spectrometric behavior with a synthetic reference compound gave evidence that the newly identified compound was a dehydroferulic acid-tyrosine cross-link. It is likely that this cross-link represented a covalent linkage between arabinoxylans and cereal proteins. The newly identified cross-link was also identified in wheat and rye flour doughs