Dying Easter eggs with homemade vegetable dyes today made for some superb kitchen botany. Making the dyes is easy, fun, and offers insight into the fascinating evolution of plant pigments.
Pigments serve a variety of roles in plants. Many pigments protect plant tissues from sunburn and pathogens and herbivores or perform other physiological functions (see review by Koes et al. 2005). Most noticeably, however, their brilliant colors attract animal pollinators to flowers and seed dispersers to fruit. Humans are also interested in plant pigments, which color and sometimes flavor our food, are potentially medicinally active, and have been used as natural dyes and paints for millennia. Continue reading