The structure of sucralose, found in the artificial sweetener Splenda, is shown in the figure. It consists of a chlorinated disaccharide made up of galactose and fructose. In its structure shown,
(a) identify the galactose unit and the fructose unit.

검증된 단계별 안내

Step 1: Understand the structure of sucralose. Sucralose is a chlorinated disaccharide composed of two monosaccharides: galactose and fructose. These units are chemically bonded together to form the disaccharide structure.

Step 2: Examine the provided image of sucralose. Look for the two distinct monosaccharide units within the structure. Each unit will have characteristic features that distinguish galactose from fructose.

Step 3: Identify the galactose unit. Galactose is a six-carbon sugar (hexose) with a specific arrangement of hydroxyl (-OH) groups. In sucralose, the galactose unit will have chlorine atoms replacing some hydroxyl groups, but its core structure remains identifiable.

Step 4: Identify the fructose unit. Fructose is a five-carbon sugar (pentose) with a ketone functional group. In sucralose, the fructose unit will also have chlorine atoms replacing some hydroxyl groups, but its ketone group and overall structure will help distinguish it from galactose.

Step 5: Label the galactose and fructose units in the image. Use the structural features described above to clearly mark which part of the sucralose molecule corresponds to galactose and which corresponds to fructose.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Disaccharides

Disaccharides are carbohydrates formed by the combination of two monosaccharides through a glycosidic bond. In the case of sucralose, the disaccharide is composed of galactose and fructose. Understanding the structure and properties of disaccharides is essential for identifying their components and their roles in nutrition and sweetness.

Galactose

Galactose is a monosaccharide that is part of the disaccharide lactose and is commonly found in dairy products. It is an aldohexose, meaning it has six carbon atoms and an aldehyde group. In the context of sucralose, recognizing the galactose unit is crucial for understanding the sweetening properties and the overall structure of the artificial sweetener.

Fructose

Fructose is a simple sugar, or monosaccharide, that is found in many plants, where it is often bonded to glucose to form sucrose. It is a key component of many sweeteners, including sucralose. Identifying the fructose unit in the structure of sucralose is important for understanding its sweetness and how it interacts with taste receptors.

The structure of sucralose, found in the artificial sweetener Splenda, is shown in the figure. It consists of a chlorinated disaccharide made up of galactose and fructose. In its structure shown,(a) identify the galactose unit and the fructose unit.