A colourless liquid used in synthetic resin manufacture, originally obtained by distilling bran.
An aldehyde derived from furan; chemical formula: C₄H₃OCHO‘Glucose loses two water molecules and rearranges to form hydroxymethyl furfural, which polymerizes into brown pigments that add flavor and color to the candy.’
- ‘Johann Doebereiner,, a German chemist accidentally discovered furfural in 1832 when he treated sugar with sulfuric acid and manganese dioxide.’
- ‘Upon further heating, the sucrose forms hydroxymethyl furfural, which polymerizes into a the brown pigments that give color and flavor to the brittle.’
- ‘The liquor undergoes a process of further evaporation and fermentation to remove volatile compounds like methanol, furfural and ethanol.’
- ‘On the toxicity of furfural, I quoted from page 109 of the scoping report: ‘A particular chemical of concern that will be produced by the plant is furfural.’’
- ‘The furfurals, for instance, which have a bitter flavour when originally extracted, are transformed by the yeasts into compounds which have a range of flavours from smoked meat to leather.’
- ‘The process occurred by electrochemical oxidation of furfural under current or potential control.’
- ‘However, such conditions also result in the formation of furfurals from glucose and xylose.’
- ‘This suggests that the reaction takes place in the water phase and that substituted furfurals enter this phase only with difficulty.’
- ‘This research concentrates mainly on the market potential for furfural and phenolic compounds and examines some of the features of new processing technologies that offer cost advantages.’
- ‘In recent years it has been shown that reductones, furfurals and other related substances formed in heated milk are sugar fission products 1,2.’
- ‘Aldoses generally exist in solution as pyranoses, whereas ketoses generally exist as furanoses, hence the ability of ketoses to rapidly dehydrate to yield furfurals.’
Late 19th century from obsolete furfurol(in the same sense) + -al.
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