Fig. 7 in Identification of anthocyanin and other flavonoids from the green-blue petals of Puya alpestris (Bromeliaceae) and a clarification of their coloration mechanism

Fig. 7. In vitro reconstruction of the petal color using the purified anthocyanin (preternatin C5, 1), flavonol (myricetin 3,3′,5′-tri-O-glucoside, 2), and flavone (luteolin 4′-O-glucoside, 4). The absorption spectra of the mixture of 1 and 2 (1:0, 1:1 and 1:3, A–C), and 1 and 4 (1:0, 1:1 and 1:3, E–G) were measured after being dissolved in three McIlvaine buffers (pH 5.6, 6.2 and 6.8). (D and H) Photographs of the mixed solutions shown in B and F, respectively. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)Published as part of Mizuno, Takayuki, Sugahara, Kohtaro, Tsutsumi, Chie, Iino, Moritoshi, Koi, Satoshi, Noda, Naonobu & Iwashina, Tsukasa, 2021, Identification of anthocyanin and other flavonoids from the green-blue petals of Puya alpestris (Bromeliaceae) and a clarification of their coloration mechanism, pp. 1-10 in Phytochemistry (112581) 181 on page 8, DOI: 10.1016/j.phytochem.2020.112581, http://zenodo.org/record/829077