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-‘sourness’ is the taste that detects ‘acidity’-
(because “spoiled food” will contain acid)
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(the ‘sourness’ of substances is rated relative to ‘dilute hydrochloric acid’, which has a ‘sourness index’ of ‘1’)
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(by comparison…)
*’tartaric acid’ has a ‘sourness index’ of ‘0.7’*
*’citric acid’ an index of ‘0.46’*
*’carbonic acid’ an index of ‘0.06’*
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*SKETCHES*
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