| Tastes, structure and solution properties of D-glucono-1,5-lactone. | |
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MedLine Citation:
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PMID: 9056085 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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D-glucono-1,5-lactone differs from D-glucopyranose only in that it has a C = O group instead of CHOH group at carbon atom number one. The molecule therefore possesses an intact 3,4 alpha-glycol group and is sweet. However, it autohydrolyses in water solution at room temperature, forming D-gluconic acid and D-glucono-1,4-lactone. As the solution pH falls it becomes sweet-sour and eventually almost completely sour as the generated hydronium ions dominate both the solution properties and the taste perceptions elicited. It is shown that the ratio of generated hydronium ions to unchanged lactone accords with anticipated taste quality during the first 28 min of autohydrolysis. Changes in both apparent specific volume and apparent isentropic compressibility illustrate increasing solute-solvent interaction and increasing disturbance of water structure during the course of autohydrolysis. These changes are consistent with the concurrent sweet to sour change, but do not explain the weak bitterness which also accompanies them. |
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Authors:
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S A Parke; G G Birch; D B MacDougall; D A Stevens |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Chemical senses Volume: 22 ISSN: 0379-864X ISO Abbreviation: Chem. Senses Publication Date: 1997 Feb |
Date Detail:
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Created Date: 1997-07-08 Completed Date: 1997-07-08 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8217190 Medline TA: Chem Senses Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 53-65 Citation Subset: IM |
Affiliation:
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Department of Food Science and Technology, University of Reading, Whiteknights, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Age Factors Female Gluconates / chemistry* Glucose / chemistry Humans Hydrogen-Ion Concentration Hydrolysis Lactones / chemistry* Male Middle Aged Taste / physiology* Tongue / physiology |
| Chemical | |
Reg. No./Substance:
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0/Gluconates; 0/Lactones; 0/glucono-1,4-lactone; 50-99-7/Glucose; 90-80-2/beta-glucono-1,5-lactone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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