Do 100% natural fruit juices contain free glucose?I believe when they say 100% natural, they mean no sugar added. This means there is no sucrose. But what about glucose? Do fruit juices have free...

Do 100% natural fruit juices contain free glucose?

I believe when they say 100% natural, they mean no sugar added. This means there is no sucrose. But what about glucose? Do fruit juices have free glucose, or are they really 100% natural and only contain fructose?

2 Answers

trophyhunter1's profile pic

trophyhunter1 | College Teacher | (Level 1) Educator Emeritus

Posted on

The idea that a juice is one hundred percent natural means that no added processed sugars like sucrose will be in the product. However, fruit naturally contains the sugar fructose, a simple monosaccharide. It is directly absorbed into the small intestinal lining and enters the bloodstream during digestion and has no need to be chemically broken down. Glucose is also a monosaccharide that absorbs directly into the bloodstream, but won't be present in 100% natural fruit juice. The only time glucose would be involved would be if a juice is artificially sweetened with sucrose. When sucrose is broken down via digestion, glucose would then be present.

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tuvshee's profile pic

tuvshee | Student, Grade 11 | (Level 1) Honors

Posted on

No, fruit juices that are 100% natural should only contain natural sugars. That are sugars in the fruit itself, namely fructose. Try avoiding juices with glucose and sucrose in the ingredients list.