Pigments

white clover and anthoxanthin structure
// Saturday, July 3, 2021 Tom Kuntzleman
Recently as I was mowing my lawn, I noticed that some of the florets on white clover have a slight pink or purple color (Figure 1). Because anthocyanins often impart red, blue, and purple color to plants, fruits, and flowers,1,2 I wondered if these tiny pink florets in white clover contained anthocyanins.
The Alchemy of Air cover
// Friday, January 5, 2018 LowellThomson
One of my goals for 2017 was to read more chemistry non-fiction. I accomplished that with three and a half books read. That doesn't seem like much, but given how busy I've been lately it was quite an accomplishment!
McCormick's Color From Nature Berry Dye
// Monday, February 27, 2017 Tom Kuntzleman
In this post I’ll be sharing a bit about the chemistry of the Berry food color found in McCormick’s Color from Nature food coloring. I will also describe some experiments and demonstrations that can be done using this food color.