Temperature and ph effects on the relative sweetness of suprathreshold mixtures of dextrose fructose |
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Authors: | Herbert Stone Shirley Oliver Joan Kloehn |
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Affiliation: | 1. Life Sciences Division, Stanford Research Institute, 94025, Menlo Park, Calif
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Abstract: | Increasing the temperature from 5 deg to 50 deg C did not significantly alter the relative sweetness of aqueous solutions of dextrose, fructose, and their combination, as measured by the method of magnitude estimation, with a panel of 12 experienced Ss. Reducing pH from 5.8 to 2.7 caused about a 50% reduction in relative sweetness for all stimuli tested. The slopes of these lines tended to decrease slightly, whereas the Y-intercept values showed the greatest change. In all experiments the slopes of the lines were reasonably stable, averaging 1.40 vs 1.3 reported by Stevens (1961) for sucrose. The results of these experiments are discussed in relation to previously reported data on taste interactions. |
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