ArticleFood science & nutrition2026
Matrix-Dependent Sweet-Sour Psychophysics: gLMS and Time-Intensity of Sugar Alcohol-Acid Mixture in Liquids and Tablets.
Article in Food science & nutrition, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Precision control of sweet-sour interactions is pivotal for reduced-sugar design across formats. This work quantified psychophysical functions for xylitol, erythritol, and sorbitol with citric or malic acid in liquids and tablet candies using gLMS concentration-intensity and time-intensity methods. In liquids, subthreshold ratings clustered near barely detectable, while suprathreshold relations followed Stevens' power law; exponents declined at extreme levels, indicating saturation. Tablets preserved power-law scaling yet exhibited > 79% higher acid exponents than liquids, producing steeper sourness growth; in erythritol and sorbitol, malic exceeded citric by > 21%, whereas exponents were ~1 and comparable in xylitol. TI results showed bidirectional suppression: acids lowered sweetness (
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