2 documents found, page 1 of 1
Influence of the phenological state of in the antioxidant potential and chemica...
García, Trina H.; Da Rocha, Claudia Quintino; Delgado-Roche, Livan; Rodeiro, Idania; Ávila, Yaiser; Hernández, Ivones; Cuellar, CindelMade available in DSpace on 2020-12-12T02:04:59Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-05-01; Ageratina havanensis (Kunth) R. M. King & H. Robinson is a species of flowering shrub in the family Asteraceae, native to the Caribbean and Texas. The aim of this work was to compare the quantitative chemical composition of extracts obtained from Ageratina havanensis in its flowering and vegetative stag...
Psychotria viridis : chemical constituents from leaves and biological properties.
Soares, Débora Barbosa da Silva; Duarte, Lucienir Pains; Cavalcanti, André D.; Silva, Fernando César; Braga, Ariadne Duarte; Lopes, Miriam Teresa PazThe phytochemical study of hexane, chloroform and methanol extracts from leaves of Psychotria viridis resulted in the identification of: the pentacyclic triterpenes, ursolic and oleanolic acid; the steroids, 24-methylene-cycloartanol, stigmasterol and β-sitosterol; the glycosylated steroids 3-O-β-D-glucosyl-β- sitosterol and 3-O-β-D-glucosyl-stigmasterol; a polyunsaturated triterpene, squalene; the esters of gl...