DETERMINATION OF SOLUBLE AND INSOLUBLE PENTOSES IN THE PRESENCE OF GLUCOSE Academic Article

abstract

• Numerous reagents have been developed for colorimetric measurement of pentoses, including aniline, L-cysteine, phloroglucinol, and orcinol. The use of orcinol reagent is desirable because it is simple to prepare and the colorimetric reaction is easily employed. The orcinol reacts with furfural - which results from the acid degradation of both soluble and insoluble pentoses - to form a green chromogen. The orcinol also reacts with hydroxymethyl furfural - which results from the acid degradation of hexoses - to form a brown-green chromogen. The difference in color between the pentose and hexose chromogens may be exploited to correct for the hexose interference.

authors

• Holtzapple, Mark

published proceedings

• TAPPI JOURNAL

author list (cited authors)

• HOLTZAPPLE, M. T., & HUMPHREY, A. E.

complete list of authors

• HOLTZAPPLE, MT||HUMPHREY, AE

publication date

• January 1983

published in

• Tappi Journal  Journal

start page

• 90

end page

• 91

volume

• 66

issue

• 8