Difference between revisions of "Meltzer's reagent"
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| − | '''Meltzer's reagent''' ( | + | '''Meltzer's reagent''' ([[Category:Noun]][[:Category:Noun|noun]], [[Category:No plural]][[:Category:No plural|no plural]]) – an iodine solution in 50% aqueous chloral hydrate, a test reagent for [[amyloid]] or [[dextrinoid]] colour reactions, often preferred by mycologist because of its clearing effect on fungal [[plectenchyma]]. In contrast, [[Lugol's solution]], a reagent usually preferred by lichenologists, has no clearing effect on fungal plectenchyma and is therefore often used together with 5-10% potassium hydroxide (KOH). The colour reactions of both reagents are similar but not identical. [[Dextrinoid]] reactions can only be observed if tested with Meltzer's reagent, [[hemiamyloid|hemi-]] and [[euamyloid]] reactions can only be observed if tested with [[Lugol's solution]]. |
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Latest revision as of 02:00, 7 December 2005
Meltzer's reagent (noun,no plural) – an iodine solution in 50% aqueous chloral hydrate, a test reagent for amyloid or dextrinoid colour reactions, often preferred by mycologist because of its clearing effect on fungal plectenchyma. In contrast, Lugol's solution, a reagent usually preferred by lichenologists, has no clearing effect on fungal plectenchyma and is therefore often used together with 5-10% potassium hydroxide (KOH). The colour reactions of both reagents are similar but not identical. Dextrinoid reactions can only be observed if tested with Meltzer's reagent, hemi- and euamyloid reactions can only be observed if tested with Lugol's solution.
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