- 著者
- Haruka Seto Serina Sasaki Yuko Mitobe Toru Ota Fumi Tatsuzawa
- 出版者
- The Japanese Society for Horticultural Science
- 雑誌
- The Horticulture Journal (ISSN:21890102)
- 巻号頁・発行日
- pp.QH-032, (Released:2023-05-26)
The flower colors and flavonoids of 16 cultivars of Verbena hybrida Groenl. & Rumpler (Verbenaceae) were examined to evaluate the relationship between flower color and flavonoid components. Fifteen anthocyanins {3-O-glucoside, 3,5-di-O-glucoside, 3-O-[6-O-(acetyl)-glucoside], 3-O-[6-O-(malonyl)-glucoside], and 3,5-di-O-[6-O-(acetyl)-glucoside] of delphinidins, cyanidins, and pelargonidins}, seven flavones {7-O-(glucuronide) of apigenin, luteolin, tricetin, and 4'-O-methyl-luteolin, 7-O-[2-O-(glucuronosyl)-glucuronide]-4'-O-(glucuronide) of apigenin, and 7-O-[2-O-(glucuronosyl)-glucuronide] of apigenin and luteolin}, two flavonols {3-O-glucoside and 3-O-[6-O-(acetyl)-glucoside] of kaempferols}, and chlorogenic acid were isolated from the flowers of these cultivars. Their structures were identified using co-HPLC, nuclear magnetic resonance, and mass spectrometry. For the Red to Purple-Violet cultivars, the corresponding color chart names were responsible for the major anthocyanidin types, and the hue values (b*/a*) of these flower colors reflected the anthocyanins concentration. Based on the relationship between the distribution of flavones, flavonols, and chlorogenic acid among cultivars and flower color, we conclude that flavonoids other than anthocyanins and chlorogenic acid make little contribution to flower color. The yellowish red color is thought to be affected by carotenoids.
- 著者
- Takayuki Mizuno Haruka Seto Takahisa Nakane Yoshinori Murai Fumi Tatsuzawa Tsukasa Iwashina
- 出版者
- National Museum of Nature and Sciece (National Science Museum, Tokyo)
- 雑誌
- 国立科学博物館研究報告B類(植物学) (ISSN:18819060)
- 巻号頁・発行日
- vol.49, no.2, pp.57-64, 2023-05-22 (Released:2023-05-22)
- 参考文献数
- 25
One anthocyanin and three flavones were isolated from the flowers of Tripora divaricata (Lamiaceae). They were identified as delphinidin 3-O-[(6″′-E-p-coumaroylglucosyl)-(1→2)-(6″-E-p-coumaroylglucoside)]-5-O-(6″′-malonylglucoside), apigenin 7-O-glucuronide, scutellarein 4′-methyl ether 7-O-glucuronide, and acacetin 7-O-glucuronide. In addition, we measured absorption spectra of intact petal and the buffer solutions (pH 5.6) containing isolated compounds for elucidation of the blue violet color development in T. divaricata. The absorption spectral curve of the buffer solution containing isolated anthocyanin showed the blue violet. Its color was identical to that of the intact flowers. These results indicate that the intramolecular copigmentation of anthocyanin mainly occurred in the blue violet flowers of T. divaricata.