How can sweeteners contain no calories, and how do metal detectors work?
We explore the curious questions that science can answer
How can artificial sweeteners taste like sugar yet contain no calories?
Sugar is very sweet and has a high energy content, or calorific value. But sweetness and calorie content aren’t necessarily linked.
Sweetness – which is a difficult property to measure, unlike calories – appears to be caused by a different chemistry to calorie content. In fact, we can record sweetness only through taste tests.
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