Semi-empirical PM3 calculations are made for the electronic absorption spectra of colored forms nonmethylated anthocyanidins (aurantinidin, pelargonidin, cyanidin, and delphinidin). The position band peak is shown to depend on orientation hydroxyl groups in aglycone structure. observed tendency toward a bathochromic shift after ОН added ring generally corresponds experimental data. results unch...

Numerous studies have provided evidence that diets rich in anthocyanins show a broad spectrum of health benefits. Anthocyanins nature are usually found the form glycosides. Their aglycone forms called anthocyanidins. The chemical structure is based on flavylium cation, but they differ position and number substituents. However, bioactives foods contain them frequently treated as uniform group co...

Forty-four taxa of three sections (Cinnamomeae (=Rosa) 26, Chinenses 8 and Gallicanae 10) and eight modern garden roses in the genus Rosa were surveyed for their floral anthocyanins. Eleven anthocyanins: 3-glucosides and 3,5-diglucosides of cyanidin (Cy), pelargonidin (Pg) and peonidin (Pn), 3-rutinosides and 3-rho-coumaroylglucoside-5-glucosides of Cy and Pn, and Cy 3-sophoroside, were isolate...

N earlier studies concerned with the genetic regulation of pigmentation in the I garden balsam, Impatiens balsamina, the genes which determine the nature of anthocyanin pigmentation were found in individual cases to regulate also the structure of leucoanthocyanins (ALSTON and HAGEN 1958) and flavonols (CLEVENGER 1958). Thus the dominant gene H , while increasing the quantity of pelargonidin der...