Disaccharides

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Last updated 6:59 PM on 4/21/26

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4 Terms

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Lactose

- A disaccharide, also know as milk sugar.

- Composed of:

~ Beta D-Galactose + Alpha D-Glucose

~ Beta D-Galactose + Beta D-Glucose

- Glycosidic Linkage: Beta (1->4)

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Sucrose

- A disaccharide, also known as table sugar.

- Composed of: Alpha D-Glucose + Beta D-Fructose

~Remember that glucose is an aldose and fructose is a ketose.

- Glycosidic Linkage: Alpha, Beta (1->2)

<p>- A disaccharide, also known as table sugar.</p><p>- Composed of: Alpha D-Glucose + Beta D-Fructose</p><p>~Remember that glucose is an aldose and fructose is a ketose.</p><p>- Glycosidic Linkage: Alpha, Beta (1->2)</p>

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Maltose

- A disaccharide known as malt sugar. Produced whenever a polysaccharide starch breaks down.

- Composed of:

~ Alpha D-Glucose + Beta D-Glucose.

~ Alpha D-Glucose + Alpha D-Glucose

- Glycosidic linkage: Alpha (1->4). The two —OH groups that form the linkage are attached to the C1 Alpha Glucose and C4 of the second glucose (an Alpha or Beta)

- Is a reducing sugar

<p>- A disaccharide known as malt sugar. Produced whenever a polysaccharide starch breaks down.</p><p>- Composed of:</p><p>~ Alpha D-Glucose + Beta D-Glucose.</p><p>~ Alpha D-Glucose + Alpha D-Glucose</p><p>- Glycosidic linkage: Alpha (1->4). The two —OH groups that form the linkage are attached to the C1 Alpha Glucose and C4 of the second glucose (an Alpha or Beta)</p><p>- Is a reducing sugar</p>

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Cellobiose

- Beta glucose + Beta glucose

- Glycosidic Linkage: Beta (1>4)

- Cannot be digested by humans