RESUMO
In this paper, we reported the synthesis of water soluble macrocyclic arenes 1 containing anionic carboxylate groups. It was found that host 1 could form a 1 : 1 complex with N-methylquinolinium salts in water. Moreover, the complexation and decomplexation of the complexes between host and the guests could be achieved by changing the pH of the solution, and the process could also be observed by naked eye.
RESUMO
OBJECTIVE: To explore the effect of processing on the contents of saccharides in Huangqi. METHOD: The contents of reducing saccharides, water-soluble saccharides and poly saccharides in Huangqi and its processed products were determined with phenol-H2SO4 method. RESULT: The contents of poly saccharides in the alcohol-broiled product were the highest of all the products. The others were all higher than those in the crude drug. CONCLUSION: Different processing methods result in different effects on the above saccharides, which administers to the interpretation of the theory of Huangqi processing.
