Dictionary > Orcinol test

Orcinol test

Definition
noun
A method used to detect the presence of pentoses with a test reagent consisting of orcinol, HCl and ferric chloride.
Supplement
This test is used to detect the presence of a pentose in urine. In the presence of pentoses, the test reagent dehydrates pentoses to form furfural. Furfural, then, reacts with orcinol. The iron ion in the test reagent will produce a bluish product. Thus, a bluish solution with which precipitate may form indicates positive for (or the presence of) pentoses.

Synonym: Bial’s test, Bial’s orcinol test.

See also: orcinol, pentose.


You will also like...

Nephrolepis exaltata
Vascular Plants: Ferns and Relatives

Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..

Genetics and Evolution
Genetics and Evolution

Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

Peppered moth ("Biston betularia") melanic and light form
Examples of Natural Selection

Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..

Growth and Plant Hormones
Growth and Plant Hormones

Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

Cell Biology
Cell Biology

The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..

Human perception in action
Human Perception – Neurology

This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..

Related Articles...

No related articles found

See all Related Topics