Otimização do método extrativo por maceração para obtenção de fitoquímicos de Ochtodes secundiramea (Rhodophyta)

Abstract

Schistosomiasis is a parasitic infectious disease that affects a vast area of the planet, reaching thousands of people in low-income regions, with little or no basic sanitation. In Brazil, the disease is endemic and caused by the worm Schistosoma mansoni. Currently, the only drug used for the treatment and control of the disease is praziquantel. However, there are studies demonstrating possible resistance to this drug. Another method recommended by the WHO (World Health Organization) is the molluscicide niclosamide, used to combat snails, however, affecting fish, amphibians and other organisms. Therefore, research is carried out looking for alternative treatments based on natural products. Previous studies have shown that crude extracts of the seaweed Ochtodes secundiramea have schistosomicidal activity. In order to obtain new extracts with higher yields of phytochemicals and cost-benefit relevance for possible prototypes of new more efficient drugs against Schistosoma mansoni, in this work we present the optimization of the extractive method from the maceration process, which demonstrated good yield using a larger volume of dichloromethane solvent and with chloroform solvent in a smaller volume.