HORTICULTURE

HORTICULTURE SCIENCE

PLANT BIO CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is also known as invert sugar?
A
Sucrose
B
Fructose
C
Glucose
D
maltose
Explanation: 

Detailed explanation-1: -Sucrose is called an invert sugar because there is a change in the sign of rotation from dextro before hydrolysis to leavo after hydrolysis. Sucrose on hydrolysis gives equimolar mixture of D-(+) glucose and D-(-) fructose.

Detailed explanation-2: -Sucrose(which is dextrorotatory) is known as invert sugar because upon hydrolysis it breaks down into Fructose (laevorotatory) and Glucose (dextrorotatory).

Detailed explanation-3: -The correct option is D. Inversion. Hydrolysis of sucrose to give glucose and fructose is called inversion. hydrolysis of sucrose brings about a change in the sign of rotation, from dextro (+) to laevo (–) and the product is named as invert sugar.

Detailed explanation-4: -Sucrose is a disaccharide made of glucose and fructose. It’s commonly known as “table sugar” but it can be found naturally in fruits, vegetables, and nuts.

Detailed explanation-5: -On hydrolysis with dilute acids or enzyme invertase, cane sugar gives the equimolar mixture of D-(+)-glucose and D-(-)-fructose. Hence, the mixture becomes laevorotatory. This sugar which on hydrolysis changes its sign of rotation from dextro to laevo is known as invert sugar.

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