The phytochemical anthocyanin has been steadily gaining popularity in medical and food technology. In addition to raising awareness of the society for natural dietary supplements, the pigment anthocyanin offers many significant features. These are summarized in this thesis and visualized by optical methods.The analyzed plants, Purple Haze, Beta Sweet and Vitelotte, are characterized by a high amount of anthocyanin. A comprehensive literature research about plant pigments (carotenoids and anthocyanins) was conducted to reveal their cell biological backgrounds. In the experimental part of this thesis the cell-biological structures of these three vegetables were examined using a bright field microscope. The location as well as the color intensity of anthocyanin were investigated. It was found that in these plant materials the anthocyanin is located in the vacuole of the plant cell. Further investigations of the chemical cell structures were evaluated using specific staining reagents. A high starch content in the Vitelotte and a high concentration of essential oils in Purple Haze and Beta Sweet were found. The medical, biological and industrial relevance of anthocyanin with special focus on Purple Haze and Vitelotte discussed how the findings demonstrate the special health benefits of anthocyanin, especially the preventive effect on various cancers and cardiovascular diseases. However, the stabilization of anthocyanin has to be increased in order to extend its field of application.