Mutarotation: a sugar that spontaneously changes from sweet to bitter @AppliedScience
Mutarotation: a sugar that spontaneously changes from sweet to bitter  @AppliedScience
Uploaded January 2025 | Updated September 2026, 2 weeks ago
Simple sugars can exist in multiple molecular conformations, some of which have different tastes and optical properties.

Steve Mould's video on optical rotation: youtube.com/watch?v=975r9a7FMqc

Reaction's video on Mexican Coke: youtube.com/watch?v=NY66qpMFOYo

Research paper describing enzymatic synthesis of L-glucose: nopr.niscpr.res.in/bitstream/123456789/17714/1/JSIR%2061%285%29%20361-365.pdf

D-mannose on Amazon: amazon.com/Micro-Ingredients-Mannose-Supplement-Soluble/dp/B01L2TFP1Q
My crystals were almost entirely the sweet form, but it is possible that your bag may have the bitter-tasting form to begin with.

D-fructose on Amazon: amazon.com/Fructose-Fruit-Sugar-16-ZIN/dp/B07DXVSGJT

D-glucose, also known as dextrose, also known as "corn sugar", can be found on Amazon, or beer homebrewing stores.

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Mutarotation: a sugar that spontaneously changes from sweet to bitter

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