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2. Vanillin–HCl staining - Wikipedia

   en.wikipedia.org/wiki/Vanillin–HCl_staining

   The localization of phlorotannins can be investigated by light microscopy after vanillin–HCl staining. [1] The phlorotannins can be seen this way in physodes in brown algae. The vanillin-HCl method can be used to estimate the proanthocyanidins content in plant cells, resulting in a red color of the test in the presence of catechin or ...

3. List of reagent testing color charts - Wikipedia

   en.wikipedia.org/wiki/List_of_reagent_testing...

   Reagent test Alcohols: Forms Lucas test in alcohols is a test to differentiate between primary, secondary, and tertiary alcohols. Alkaloids: Forms Froehde Liebermann Mandelin Marquis Mayer's Mecke Simon's: Amines, and amino acids: Forms Folin's: Barbiturates: Class Dille–Koppanyi Zwikker: Benzodiazepines: Class Zimmermann: Phytocannabinoids ...

4. Gunzberg's test - Wikipedia

   en.wikipedia.org/wiki/Gunzberg's_test

   Gunzberg's test is a chemical test used for detecting the presence of hydrochloric acid. Gunzberg's reagent is made by dissolving two grams of phloroglucinol and one gram of vanillin in 100 millilitres of 95% ethanol. Hydrochloric acid catalyses Gunzberg's reagent to form a red complex. [1] [2]

5. Vanillin - Wikipedia

   en.wikipedia.org/wiki/Vanillin

   Vanillin is an organic compound with the molecular formula C 8 H 8 O 3. It is a phenolic aldehyde. Its functional groups include aldehyde, hydroxyl, and ether. It is the primary component of the extract of the vanilla bean. Synthetic vanillin is now used more often than natural vanilla extract as a flavoring in foods, beverages, and ...

6. Fringe theories about the Shroud of Turin - Wikipedia

   en.wikipedia.org/wiki/Fringe_theories_about_the...

   [64] Ramsey stressed that he would be surprised if the results of the 1988 tests were shown to be far out – especially "a thousand years wrong" – but he insisted that he was keeping an open mind. [65] The results of the tests were to form part of a documentary on the Turin Shroud which was to be broadcast on BBC2.

7. Simple blood test could predict a person’s heart disease risk ...

   www.aol.com/news/simple-blood-test-could-predict...

   A new approach to a routine blood test could predict a person’s 30-year risk of heart disease, research published Saturday in the New England Journal of Medicine found.. Doctors have long ...