Abstract
AbstractSolutions of anthocyanins became more violet and greatly increased in colour in the presence of catechin and acetaldehyde at pH 3.5. The colour changes were attributed to the formation of a range of highly coloured new compounds, some detectable by chromatography and believed to be formed by Baeyer‐type condensations. The reaction rates increased with increasing concentration ratio of catechin to anthocyanin. Anthocyanidin 3,5‐diglucosides reacted more slowly than 3‐glucosides, gave smaller violet shifts and their augmented colours were more stable. A small amount of a new anthocyanin derived from delphinidin 3‐glucoside was isolated and its properties examined.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.