Chapter 25, Problem 25.37P

(a)

Interpretation Introduction

Interpretation:

The monosaccharide units present in raffinose has to be named.

(b)

Interpretation Introduction

Interpretation:

The glycosidic bonds formed by the linkage of three monomers to form the trisaccharide has to be given.

(c)

Interpretation Introduction

Interpretation:

Raffinose is a reducing sugar or not has to be stated.

Concept-Introduction:

Reducing sugars are the carbohydrates which contains free carbonyl groups (aldehyde or ketone group).  They are oxidized by the oxidizing agents by reducing the oxidizing agent.

(d)

Interpretation Introduction

Interpretation:

Raffinose reacts with how many moles of periodic acid has to be given.

Concept Introduction:

The periodic acid cleaves carbon-carbon bonds with α-hydroxyketones and α-hydroxyaldehydes.  In carbohydrates, the reaction is useful for the determination of structure.