9cisviolaxanthin
9-cis-violaxanthin is a cis isomer of violaxanthin, a xanthophyll carotenoid found in photosynthetic organisms. Like violaxanthin, it is a C40 carotenoid with a polyene chain and oxygen-containing functional groups, but its defining feature is the cis configuration at the double bond between carbon 9 and carbon 10, giving a bent rather than linear conformation compared with the all-trans form.
Occurrence and abundance tend to vary by species and tissue. 9-cis-violaxanthin has been detected in plants
Biological context and function are not fully established. The canonical xanthophyll cycle in plants involves violaxanthin,
Analytical notes: identification and quantification are typically performed by high-performance liquid chromatography with spectroscopic detection, sometimes
See also: xanthophyll cycle, violaxanthin, antheraxanthin, zeaxanthin.