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Where is glucose found naturally?
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Lines of sugarcane before harvest.
Glucose is found naturally in several forms and locations:
- Foods: It is commonly found in fruits and honey.12
- Biological Systems: It is the major free sugar circulating in the blood of higher animals and, under abnormal conditions, may be found in urine.23
- Constituent of Larger Molecules: Glucose is a fundamental building block of many naturally occurring carbohydrates. It is a constituent of disaccharides such as sucrose and lactose, and it serves as the exclusive structural unit of the polysaccharides cellulose, starch, and glycogen.34