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प्रश्न
Answer the following question.
Write the products obtained after the hydrolysis of lactose.
उत्तर
Lactose is composed of β-D galactose and β-D glucose. Thus on hydrolysis, it gives β-D galactose and β-D glucose.
\[\ce{\underset{\text{Lactose}}{C12H22O11}+\underset{\text{Water}}{H2O}->\underset{\text{D-Glucose}}{C6H12O6}+\underset{\text{D-Galactose}}{C6H12O6}}\]
संबंधित प्रश्न
Define the following term:
Glycosidic linkage
What happens when D-glucose is treated with the following reagent?
HNO3
Which of the following is a disaccharide?
The sugar that is characteristic of milk is ____________.
The commonest disaccharide has the molecular formula:
Sucrose on hydrolysis gives:
Lactose on hydrolysis yields
Which disaccharide is present in milk?
Which of the following will not show mutarotation?
When sucrose is hydrolysed the optical rotation values are measured using a polarimeter and are given in the following table:
| S. No. | Time (hours) | Specific Rotation |
| 1 | 0 | + 66.5° |
| 2 | ∞ | - 39.9° |
- Account for the two specific rotation values.
- What is the specific name given to sucrose based on the above observation?
- One of the products formed during the hydrolysis of sucrose is a glucose, that reacts with hydroxylamine to give compound A. Identify compound A.
