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ID number:308378
Evaluation:
Published: 03.08.2015.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Glikozi pierāda ar Fēlinga reakciju – pakarsējot rodas dzeltenbrūnas nogulsnes.
Cieti pierāda ar jodu – rodas zils šķīdums.
Ogļhidrātus pierāda ar α-naftanolu (Moliša reakcija) – uz robežvirsmas rodas sarkanviolets gredzens.
Fruktozi pierādīšanai izmanto Seļivanova reakciju (ketožu pierādīšanai) – pakarsējot rodas sarkans kondensācijas produkts.

Biureta reakcija – veidojas violetas krāsas kompleksais savienojums ar Cu2+ joniem. Pierāda peptīdgrupu.
Ksantoproteīna reakcija – reakcija raksturīga proteīniem, kuru sastāvā ir ietilpst fenilanilīna un tirozīna atlikumi. Aromātiskais gredzens ar HNO3 nitrējas, veidojot dzeltenu reakcijas produktu.

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