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Capsaicinoids are responsible for the pungent flavor of peppers (Capsicum sp.). The cultivar CH-19 Sweet is a non-pungent pepper mutant that biosynthesizes the low-pungent capsaicinoid analogs, capsinoids. Capsinoids possess important pharmaceutical properties. However, capsinoid
The fundamental structure of capsinoids is a fatty acid ester with vanillyl alcohol, whereas in capsaicinoids, a fatty acid amide is linked to vanillylamine. To clarify the relationship between their biosynthesis in Capsicum plants, we carried out an in vivo tracer experiment using stable
The biosynthetic pathway of capsinoid in 'CH-19 Sweet' was investigated. [(3)H]Valine and [(14)C]phenylalanine were injected into the fruits of the intact plant. Both of radioactivities were detected in capsinoid fractions. (14)C radioactivity was observed in phenylpropanoid compounds, and in