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Ch.6 Carbohydrates–Life’s Sweet Molecules

Chapter 3, Problem 6.41a

ALLIED Health Based on the sweetness index in Table 6.2, if you tasted a drop of each of the syrups below, which would taste the sweetest?


(a) light corn syrup (100% glucose)

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Welcome back. Everyone. If each of the following syrups were sampled, which one would likely taste the sweetest. We're given four answer choices and we're going to analyze them. Those answer choices involve sucrose, glucose and fructose. So basically, we have to recall the trend in sweetness specifically whenever we have monosaccharide and dissect rights sweetness increases as follows. First of all, we're going to have glucose followed by sucrose which is a dissect ride. And then once again, we have a mono sac rite which is fructose in this context. If we look at answer choice. A it states maple syrup, we notice that its composition is 100% sucrose. So if it's based on sucrose only, it's going to be less sweet than something that has fructose because essentially fructose increases sweetness. So A is not the correct choice. Now, B Agave syrup which contains 20% glucose and 80% fructose. C Manuka honey, 70% fructose and 30% glucose. And the high fructose corn syrup which contains 42% glucose and 58% fructose. So what we want to understand is that the answer choice must have the highest percentage of fructose because fructose produces the sweetest syrup. And if we look at those percentages, we have 58 70 80. So the one that has 80% fructose is going to taste the sweetest, right? Because it contains the largest percent of fructose. And that's the final answer, which is option B. Thank you for watching.