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What are the differences among fructose, glucose, lactose, maltose, and sucrose?
Glucose (also called dextrose) and fructose (also called levulose or fruit sugar) are simple sugars. Glucose is found in plant saps and fruits and fructose is in fruits, honey, and green plants. Sucrose - ordinary table sugar from juices, fruits, and roots - is a disaccharide or double sugar as is lactose (also called milk sugar), and maltose. Maltose (also called malt sugar) is found in beer and malt whisky. There are also polysaccharides, complex carbohydrates which include cellulose and starch. The shared suffix -ose (from French) means 'carbohydrate' or 'sugar'.