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Schiff reagent

Pronunciation: shif

Definition: an aqueous solution of basic fuchsin or pararosaniline that is decolorized by sulfur dioxide; commonly prepared by addition of hydrochloric acid to a dye solution containing a metabisulfite or bisulfite salt; used for aldehydes and in histochemistry to detect polysaccharides, DNA, and proteins.

See: Feulgen stain, periodic acid–Schiff stain, ninhydrin-Schiff stain for proteins

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.