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Detection Device: Microplate reader Application: Citric acid(CA) is a common organic acid in organism and an important food flavor substance. In addition, CA is the product of the first step of the tricarboxylic acid cycle.
Under acid condition, Cr6+ is reduced to Cr3+ by citric acid, which have a characteristic absorption peak at 545 nm. The content of citric acid in the sample can be calculated by measuring the increase of the absorption value at 545 nm.
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