Which of the following statements is correct about sweetness levels?

Glucose is indeed less sweet than sucrose, which is a standard reference compound for sweetness. Sucrose, which is a disaccharide made of glucose and fructose, has a sweetness level defined as 1.0. Glucose has a sweetness rating of approximately 0.75 on the same scale. This means that when tasting, sucrose is perceived as sweeter than glucose, validating the statement that glucose is less sweet than sucrose.

To provide context, the sweetness perception of various sugars varies. Fructose, for example, is significantly sweeter than glucose, which is why many sweeteners containing fructose can have intense sweetness levels. Lactose, the sugar found in milk, is less sweet than both glucose and fructose, making comparisons involving it less favorable in describing higher sweetness levels. Understanding these comparisons can aid in food formulation and dietary planning, as the relative sweetness of different sugars influences their use in various products.