%0 Journal Article
%T Desarrollo de una t¨¦cnica anal¨ªtica para cuantificar las antraquinonas presentes en la Senna alata (L.) Roxb. (Guacamaya francesa)
%A Barrese P¨¦rez
%A Yinet
%A Hern¨¢ndez Jim¨¦nez
%A Mar¨ªa Elena
%A Garc¨ªa Pulpeiro
%A Oscar
%J Revista Cubana de Plantas Medicinales
%D 2005
%I ECIMED
%X an analytical quantitative technique that allows to determine the concentration of quinones present in the crude drug and in the fluid extract of senna alata (l.) roxb., popularly known as ¡°guacamaya francesa¡±, is exposed. some aspects of the analytical procedure, such as the reflux time, the color development time and the way in which the ethereal phases were worked with, were modified. 3 methods of quantification were studied. all of them showed a good lineality, exactness and precision, but the differential spectrophotometry method was selected since it reduced in a higher percentage the interferences due to the degradation products, and it also had the highest specificity and the lowest percentage of error. a reference solution of cocl2 was used. the modifications introduced in the analytical procedure allowed to have a fast and simple technique to be applied in a pharmaceutical production center.
%K senna alata (l.) roxb
%K crude drug
%K fluid extract
%K reflux
%K ethereal phases.
%U http://scielo.sld.cu/scielo.php?script=sci_abstract&pid=S1028-47962005000300010&lng=en&nrm=iso&tlng=en