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Vitamins play an important role in the human health, and thus they are the kind of major nutrients in the body. Chemical
products perform numerous physiological functions and can jeopardize health jointly in their absence and surplus. Therefore,
it is necessary to establish methods for observation vitamin levels in various molds. In this review paper, the most methods
of determination used are high performance liquid chromatography (HPLC), spectrophotometric and potentiometric techniques
by listed the value of : slope, linear range, correlation coefficient, detection limit, the max of wavelength and PH and compared
with these methods.