orcinol test
Oxford Dictionary of Biochemistry:
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orcinol test
or Bial's test
a colorimetric test specific for aldopentoses. The sample is heated with strong acid to convert any aldopentose present to furfural (i.e. 2-furaldehyde), which is then reacted with orcinol (i.e. 5-methyl-1,3-benzenediol) in the presence of ferric chloride to give a blue-green compound extractable into amyl alcohol. The test is used for the determination of RNA and the detection of pentosuria. [After Manfred Bial (1870 — 1908), German physician.]
a colorimetric test specific for aldopentoses. The sample is heated with strong acid to convert any aldopentose present to furfural (i.e. 2-furaldehyde), which is then reacted with orcinol (i.e. 5-methyl-1,3-benzenediol) in the presence of ferric chloride to give a blue-green compound extractable into amyl alcohol. The test is used for the determination of RNA and the detection of pentosuria. [After Manfred Bial (1870 — 1908), German physician.]
| orbital shaker, orbital, orbit | |
| order, order of magnitude, order of reaction |
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Oxford Dictionary of Biochemistry
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