ABSTRACT
AbstractPhytopharmaceutical products are being used in the treatment and prevention of health problems. Nowadays, the development and evaluation of novel pharmaceutical products is expensive and time consuming. A statistical approach is a good tool for optimal development processes. Nectandra falcifolia (Nees) J.A. Castigl. ex Mart. Crov. & Piccinini, Lauraceae, a Brazilian species, is reported as anti-inflammatory, anti-leishmanial and anti-microbial. However, there is little known about its chemical composition. For other species of Nectandra genus, the presence of antioxidant compounds is reported. In order to optimize the process of obtaining extract with high antioxidant activity, different extraction conditions were tested following a statistical approach. Two sequential experimental designs were used – first, a factorial 23 design, followed by central composite 22. The extracts manufactured by these experimental statistical matrixes had their antioxidant activity and phenolic contents quantified and the response surface plots were fitted in quadratic models and they predicted the best extraction condition for the best antioxidant activity. This standardized extract and its antioxidant activity were better evaluated by two complementary tests (ABTS and Burst respiratory). A topical formulation containing 1% (w/w) of standardized extract was prepared and used for an in vivo skin permeation study using a two-dose application. The photoacoustic spectroscopy was used to analyze the samples from the permeation study and the composition profile of standardized extract. In rat skin samples, the data demonstrated that for the higher dose of topical formulation (5 g/cm2), the standardized extract could cross skin and be seen in epidermis and dermis. This was not the case for the lower dose (2 g/cm2) which was only present in the epidermis. This information suggests that this novel standardized extract of N. falcifoliacould be explored for skin damage prevention or treatment for diseases developed by oxidative damage.
ABSTRACT
Introducción: los extractos acuosos de Momordica charantia L poseen potencial terapéutico avalado científicamente, lo cual posibilita su empleo en el tratamiento de diversas enfermedades, sobre todo en la diabetes. La obtención de un extracto estandarizado es de gran importancia y posibilita su reproducción a escala industrial en la obtención de un ingrediente farmacéuticamente activo, para el desarrollo de formas terminadas de administración oral. Objetivos: desarrollar una tecnología a escala de laboratorio para la obtención de extracto acuoso estandarizado de Momordica charantia L Métodos: el estudio de los parámetros de operación (relación material vegetal-disolvente y el tiempo de extracción) se llevó a cabo en un reactor de laboratorio diseñado a partir de las dimensiones de un reactor industrial, con un diseño de superficie de respuesta factorial de 3 niveles...
Introduction: Momordica charantia L aqueous extracts have scientifically-confirmed therapeutical potential, which makes it possible to use it in the treatment of several diseases, particulary diabetes. Obtaining a standardized extract is of great importance to reproduce it at industrial scale and also to obtain a pharmaceutically active ingredient (FAI) for the development of orally administered finished forms. Objectives: to develop a technology at lab scale to obtain standardized aqueous extract from Momordica charantia L Methods: the study of the operational parameters (vegetal matter-solvent ration and extraction time) was performed in a lab reactor designed according to the dimensions of an industrial reactor, with a 3-level surface design of factorial response...
Subject(s)
Momordica charantia , Plant ExtractsABSTRACT
In the modernization course of Chinese materia medica(CMM),two misunderstanding mistakes which are out of line with traditional Chinese medicine(TCM)theory and excessively emphasize the research of CMM compound prescription and two difficult points which are the establishment of CMM quality control system and the establishment of CMM evaluation system were pointed out.Because the main means of TCM syndrome differentiation treatment and TCM combination therapy is CMM processing pieces and the starting point of the research of CMM efficacy substantial basis should be CMM processing pieces,the priority of the modernization of CMM should be the research on modern CMM processing pieces and the conditions have been mature now.The research on modern CMM pieces were supposed to take three steps:the research on "standardized extract",the research on "effective fraction" and the research on the CMM nature of "effective fraction".