Hugo Schiff

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Schiff, Hugo


Born Apr. 26, 1834, in Frankfurt am Main; died Sept. 8, 1915, in Florence. Italian chemist. German by nationality.

A student of F. Wöhler, Schiff was a privatdocent at the University of Bern (1857). He later emigrated to Italy, where he worked in Florence from 1863 to 1876 and from 1879 to 1915. From 1876 to 1879 he was a professor at the University of Turin.

Schiff’s main works were devoted to organic chemistry. Schiff discovered the condensation reaction of aromatic amines with aldehydes (1864) and investigated the products of the reaction, which have come to be called Schiff bases. He synthesized populin (1868) and digallic, or tannic, acid (1873). He proposed qualitative reactions for aldehydes (with fuchsin sulfurous acid; called the Schiff reaction), urea, and pentosanes. Schiff invented the azotometer (or nitrometer), a device for determining nitrogen according to the method proposed by J. B. Dumas.


“Hugo Schiff.” In the collection Berichte der Deutschen chemischen Gesellschaft, fasc. 48, vol. 2. Berlin, 1916. Pages 1566–67.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Periodic acid-Schiff stain shows yeast of uniform size with a thick cell wall and clear cytoplasm (original magnification x40).
Periodic acid-Schiff stain can highlight intracellular or extracellular eosinophilic globules (original magnification X100).
(d) Alcian blue and periodic acid-Schiff stain of the specimen, demonstrating abundant glycogen in the cytoplasm.
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Caption: Figure 2: Rectal nodule biopsy (400x) revealing tumor cells arranged in sheets with small round-to-oval nuclei consistent with granular cell tumor on periodic acid-Schiff stain.
Periodic acid-Schiff stain revealed glycogen accumulation which dissolved upon diastase application (Figure 2).
The retinas were prepared with trypsin digestion and stained with periodic acid-Schiff stain. Typical retinal microvascular staining was shown in this figure: control group (a), model group (b), TWOD group (c), and CaD group (d).
Other stains can be applied according to the need of diagnosis, for example, Gram's stain, Ziehl-Neelsen stain, Periodic acid-Schiff stain, Alcian blue stain, and Papanicolaou stain.
Psammomatous calcification and periodic acid-Schiff stain positive hyaline basement membrane material were observed in the tumour stroma (Fig.
Immunohistochemistry revealed positive cytoplasm reaction for epithelial membrane antigen (Figure 2B), common in cells of sebaceous origin but not in basal cell carcinomas, and was negative for Periodic acid-Schiff stain, S-100 protein, and Mart-1.
And if you do a biopsy, always do a periodic acid-Schiff stain on the specimen," Dr.
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