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Taste acuity in response to zinc supplementation in older Europeans.
Br J Nutr. 2008 Jan; 99(1):129-36.BJ

Abstract

Taste acuity declines with age and may be dependent upon Zn status. The aim of the present double-blind, randomised controlled intervention trial has been to determine taste acuity in response to Zn supplementation (placebo, or 15 or 30 mg Zn/d). Healthy older European adults aged 70-87 years were recruited within Italy (Rome) (n 108) and France (Grenoble) (n 91) to the European Commission-funded Zenith project. A signal detection theory approach was adopted for taste assessment. The data were converted to R indices and analysed by repeated-measures ANOVA controlling for baseline taste acuity as well as serum and erythrocyte Zn. Serum Zn increased post-intervention, indicating compliance with the intervention. Results differed across geographical region. Salt taste acuity was greater in response to Zn (30 mg) than placebo post-intervention among those recruited in Grenoble. There was no apparent change in acuity for sweet, sour or bitter taste in response to Zn. Supplemented Zn may have potential to enhance salt taste acuity in those over the age of 70 years. Further research is required to determine if enhanced salt taste acuity is reflected in the eating experiences of older individuals.

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Authors+Show Affiliations

Stewart-Knox BJ
Northern Ireland Centre for Food and Health, University of Ulster, Coleraine BT52 1SA, UK. B.knox@ulster.ac.uk
Simpson EE
No affiliation info available
Parr H
No affiliation info available
Rae G
No affiliation info available
Polito A
No affiliation info available
Intorre F
No affiliation info available
Andriollo Sanchez M
No affiliation info available
Meunier N
No affiliation info available
O'Connor JM
No affiliation info available
Maiani G
No affiliation info available
Coudray C
No affiliation info available
Strain JJ
No affiliation info available

MeSH

AgedAged, 80 and overAnalysis of VarianceDietary SupplementsDouble-Blind MethodErythrocytesEuropean Continental Ancestry GroupFemaleFranceHumansMaleRomeSodium ChlorideTaste ThresholdZinc

Pub Type(s)

Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17651517

Citation

Stewart-Knox, Barbara J., et al. "Taste Acuity in Response to Zinc Supplementation in Older Europeans." The British Journal of Nutrition, vol. 99, no. 1, 2008, pp. 129-36.
Stewart-Knox BJ, Simpson EE, Parr H, et al. Taste acuity in response to zinc supplementation in older Europeans. Br J Nutr. 2008;99(1):129-36.
Stewart-Knox, B. J., Simpson, E. E., Parr, H., Rae, G., Polito, A., Intorre, F., Andriollo Sanchez, M., Meunier, N., O'Connor, J. M., Maiani, G., Coudray, C., & Strain, J. J. (2008). Taste acuity in response to zinc supplementation in older Europeans. The British Journal of Nutrition, 99(1), 129-36.
Stewart-Knox BJ, et al. Taste Acuity in Response to Zinc Supplementation in Older Europeans. Br J Nutr. 2008;99(1):129-36. PubMed PMID: 17651517.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Taste acuity in response to zinc supplementation in older Europeans. AU - Stewart-Knox,Barbara J, AU - Simpson,Ellen E A, AU - Parr,Heather, AU - Rae,Gordon, AU - Polito,Angela, AU - Intorre,Federica, AU - Andriollo Sanchez,Maud, AU - Meunier,Natalie, AU - O'Connor,Jacqueline M, AU - Maiani,Giuseppe, AU - Coudray,Charles, AU - Strain,J J, Y1 - 2007/07/26/ PY - 2007/7/27/pubmed PY - 2008/5/17/medline PY - 2007/7/27/entrez SP - 129 EP - 36 JF - The British journal of nutrition JO - Br J Nutr VL - 99 IS - 1 N2 - Taste acuity declines with age and may be dependent upon Zn status. The aim of the present double-blind, randomised controlled intervention trial has been to determine taste acuity in response to Zn supplementation (placebo, or 15 or 30 mg Zn/d). Healthy older European adults aged 70-87 years were recruited within Italy (Rome) (n 108) and France (Grenoble) (n 91) to the European Commission-funded Zenith project. A signal detection theory approach was adopted for taste assessment. The data were converted to R indices and analysed by repeated-measures ANOVA controlling for baseline taste acuity as well as serum and erythrocyte Zn. Serum Zn increased post-intervention, indicating compliance with the intervention. Results differed across geographical region. Salt taste acuity was greater in response to Zn (30 mg) than placebo post-intervention among those recruited in Grenoble. There was no apparent change in acuity for sweet, sour or bitter taste in response to Zn. Supplemented Zn may have potential to enhance salt taste acuity in those over the age of 70 years. Further research is required to determine if enhanced salt taste acuity is reflected in the eating experiences of older individuals. SN - 0007-1145 UR - https://www.unboundmedicine.com/medline/citation/17651517/Taste_acuity_in_response_to_zinc_supplementation_in_older_Europeans_ L2 - https://www.cambridge.org/core/product/identifier/S0007114507781485/type/journal_article DB - PRIME DP - Unbound Medicine ER -