A simple, rapid, and sensitive fluorimetric method was developed validated to quantify quassia in polymeric nanocapsule suspensions non suspensions, using acetonitrile as a solvent. The excitation emission wavelengths were set at 397 nm 465 nm, respectively. calibration graph linear from 0.05 0.25 µg/mL with correlation coefficient of 0.9892. detection quantitation limits 2.4 0.8 µg/mL, validat...

Biochemical methods originally designed for mammalian tissues are not, in all instances, directly adaptable to tissues from other species, such as fish. Consideration must be given to the biochemical profile of the research animal to which an analytical method is to be applied. In particular, when adapting a method for an amino acid such as phenylalanine from mammalian serum to fish serum, one ...

Boronobenzo[b]quinolizinium derivatives exhibit several favorable properties for the fluorimetric detection of hydrogen peroxide, namely quantitative transformation to a product whose emission maximum is well separated from the one of the substrate, water solubility, and the ability to operate in living cells.

soluble vitamin and needed for the growth and repair of tissues in all parts of the body. AA has vital importance in processes of oxidation and reduction in human organism participating of several metabolic reactions. AA has also been used for the prevention and treatment of the common cold, mental illness, infertility, cancer and AIDS. Due to the great importance of AA in human beings, the qua...