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...

Rhododendron dauricum is a cold-hardy shrub integrating ornamental, medicinal, and aromatic functions. Flower color an important feature related to ornamental value for breeders consumers. Nevertheless, the coloration mechanism of flower in R. still unclear. var. albiflorum white variety dauricum. In this study, integrative analysis metabolome transcriptome was conducted between A total nine an...

The polyphenolic components in the cambial tissues of several eucalypt species are mainly C6 compounds in the form of ellagitannins; shikimic acid is also present in appreciable quantities (Hillis & Carle, 1958, 1962; W. E. Hillis, unpublished work). When the cambial tissues of eucalypts are injured in the growing season, a faint-brown liquid commonly exudes and dries to a brown or brown-red, b...

Eggplant (also known as aubergine) by-products, which consist mostly of peel and calyx, are generated in substantial amounts by industrial food processing sections usually discarded waste without further utilization. However, studies have demonstrated that these by-products superb sources bioactive compounds. Therefore, the disposal eggplant not only gives rise to environmental economic consequ...

The acylation of anthocyanins contributes to their structural diversity. Aromatic is responsible for the blue color and certain flowers. acyltransferase from Gentiana triflora Pall. (Gentianaceae) (Gt5,3′AT) catalyzes glucosyl moieties at 5 3′ positions anthocyanins. Anthocyanin transfers an acyl group a single position, such that Gt5,3′AT possesses unique enzymatic activity. Structural investi...