Information | |
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has gloss | (noun) biochemical indicator of the presence of carbohydrates in a solution; if carbohydrates are present a violet ring is formed by reaction with alpha-naphthol in the presence of sulfuric acid alpha-naphthol test, Molisch reaction, Molisch's test, Molisch test |
has gloss | eng: Molisch's Test (named after Austrian botanist Hans Molisch) is a sensitive chemical test for the presence of carbohydrates, based on the dehydration of the carbohydrate by sulfuric acid to produce an aldehyde, which condenses with two molecules of phenol (usually α-naphthol, though other phenols (e.g. resorcinol, thymol) also give colored products) resulting in a red- or purple-colored compound. |
lexicalization | eng: alpha-naphthol test |
lexicalization | eng: Molisch reaction |
lexicalization | eng: Molisch test |
lexicalization | eng: Molisch's test |
subclass of | (noun) (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction indicator |
Meaning | |
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German | |
has gloss | deu: Die Molisch-Probe (oder Reaktion nach Molisch) ist ein allgemeiner Kohlenhydratnachweis. Sie geht auf den österreichischen Botaniker Hans Molisch zurück. |
lexicalization | deu: Molisch-Probe |
Italian | |
has gloss | ita: Il test di Molisch è una prova per la determinazione delle aldeidi. Consiste in un’addizione nucleofila del fenolo ad un'aldeide in ambiente disidratante per H2SO4 concentrato. Avviene solo per le aldeidi e per quei frammenti aldeidici derivanti dalla decomposizione di altre molecole (e.g.formaldeide per la decomposizione dell’esametilentetrammina). Viene impiegata anche per il riconoscimento dei fenoli. |
lexicalization | ita: Test di Molisch |
Portuguese | |
has gloss | por: O teste de Molisch é um procedimento químico usado para determinar a presença de hidratos de carbono numa solução. |
lexicalization | por: teste de Molisch |
Castilian | |
has gloss | spa: La Reacción de Molisch es una reacción que tiñe cualquier carbohidrato presente en una disolución. |
lexicalization | spa: Reaccion de Molisch |
lexicalization | spa: Reacción de Molisch |
Links | |
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similar | e/Molisch's test |
Media | |
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media:img | Molisch test.png |
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