Biology Question #944
Avishan, a 27 year old female from the Internet asks on September 30, 2002,
Why is the strawberry in yogurt flavored strawberry sometimes brown or reddish brown? Is it a chemical reaction? What are the pigments involved?
viewed 13485 times
answered on September 30, 2002
The red pigment in strawberries is an anthocyanin. This kind of pigment changes color depending on the acid/base concentration of it's environment. It could be the acidity of the yoghurt that is causing the color change. It could also be a chemical reaction called oxidation that is causing the anthocyanin molecule to change in subtle ways which cause the color to be perceived as brown rather than red.
Add to or comment on this answer using the form below.
Note: All submissions are moderated prior to posting.
If you found this answer useful, please consider making a small donation to science.ca.