3 documents found, page 1 of 1
A procedure for assessment of the reducing capacity of plants-derived beverages...
Sacchi, Rafaela L.; Santana, Waila Evelyn Lima; Nunez, C. V.; Moya, Horácio DoriganAn alternative spectrophotometric ferric reducing activity power (FRAP) method for quantification of total reducing capacity (TRC) was developed. The method is based on the reduction of FeIII to FeII by antioxidant compounds containing 2,2’-bipyridine (bipy) in aqueous solution. Absorbance values recorded at 521 nm, characteristic of the Fe(bipy)3 2+ complex formed, were used to determine the TRC of some plants...
A new method for quantification of total polyphenol content in medicinal plants...
do, Santo, Mônica Gabriela; Nunez, Cecilia Veronica; Moya, Horácio Dorigan
Montrichardia linifera (Araceae) biological potential, phytochemical prospectio...
Santos, Francislane Nascimento dos; Oliveira, Taciane Almeida de; Souza Lima, Karen Cristina; Andrade, Jaqueline Inês Alves de; Silva, Diego Xavier daMontrichardia linifera is commonly known in Brazil as "aninga." In November 2008 and August 2009, we collected plant samples and extracted leaves and stems using hexane or dichloromethane and methanol to evaluate its biological and chemical potential, phytochemical profile and polyphenol content. Differences in the chemical composition of the collections were evident. In the first collection, the apolar extract...