Taste acuity in response to zinc supplementation in older Europeans

Barbara J. Stewart-Knox, Ellen E. A. Simpson, Heather Parr, Gordon Rae, Angela Polito, Federica Intorre, Maud Andriollo Sanchez, Natalie Meunier, JM O'Connor, Giuseppe Maiani, Charles Coudray, JJ Strain

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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 30mg Zn/d). Healthy older European adults aged 70-87 years were recruited within Italy (Rome) (n 108) and France (Grenoble) (it 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 (30mg) 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.
LanguageEnglish
Pages129-136
JournalBRITISH JOURNAL OF NUTRITION
Volume99
Issue number1
DOIs
Publication statusPublished - Jan 2008

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Zinc
Salts
Placebos
Serum
Italy
France
Analysis of Variance
Randomized Controlled Trials
Eating
Erythrocytes
Research

Cite this

Stewart-Knox, Barbara J. ; Simpson, Ellen E. A. ; Parr, Heather ; Rae, Gordon ; Polito, Angela ; Intorre, Federica ; Sanchez, Maud Andriollo ; Meunier, Natalie ; O'Connor, JM ; Maiani, Giuseppe ; Coudray, Charles ; Strain, JJ. / Taste acuity in response to zinc supplementation in older Europeans. In: BRITISH JOURNAL OF NUTRITION. 2008 ; Vol. 99, No. 1. pp. 129-136.
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author = "Stewart-Knox, {Barbara J.} and Simpson, {Ellen E. A.} and Heather Parr and Gordon Rae and Angela Polito and Federica Intorre and Sanchez, {Maud Andriollo} and Natalie Meunier and JM O'Connor and Giuseppe Maiani and Charles Coudray and JJ Strain",
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Stewart-Knox, BJ, Simpson, EEA, Parr, H, Rae, G, Polito, A, Intorre, F, Sanchez, MA, Meunier, N, O'Connor, JM, Maiani, G, Coudray, C & Strain, JJ 2008, 'Taste acuity in response to zinc supplementation in older Europeans', BRITISH JOURNAL OF NUTRITION, vol. 99, no. 1, pp. 129-136. https://doi.org/10.1017/S0007114507781485

Taste acuity in response to zinc supplementation in older Europeans. / Stewart-Knox, Barbara J.; Simpson, Ellen E. A.; Parr, Heather; Rae, Gordon; Polito, Angela; Intorre, Federica; Sanchez, Maud Andriollo; Meunier, Natalie; O'Connor, JM; Maiani, Giuseppe; Coudray, Charles; Strain, JJ.

In: BRITISH JOURNAL OF NUTRITION, Vol. 99, No. 1, 01.2008, p. 129-136.

Research output: Contribution to journalArticle

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