Question:
Complete the statement: Phenolic compounds are A metabolites present in fruits and these are found mainly in the form of B
A and B, respectively are
Complete the statement: Phenolic compounds are A metabolites present in fruits and these are found mainly in the form of B
A and B, respectively are
A and B, respectively are
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During food processing or crushing of fruits (such as wine-making or juice extraction), endogenous \(\beta\)-glucosidase enzymes are released.
These enzymes hydrolyze the \(\beta\)-glycosidic bonds, releasing the free, highly aromatic and bioactive phenolic aglycones.
These enzymes hydrolyze the \(\beta\)-glycosidic bonds, releasing the free, highly aromatic and bioactive phenolic aglycones.
Updated On: Aug 20, 2026
- Primary, \(\beta\)-glycosides
- Secondary, \(\beta\)-glycosides
- Primary, ester
- Secondary, ester
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Plants synthesize primary metabolites (such as sugars, amino acids, and lipids) essential for growth, as well as secondary metabolites that protect the plant against stress, pathogens, and UV radiation.
Step 2: Detailed Explanation:
- Phenolic compounds (including flavonoids, anthocyanins, and phenolic acids) are classic plant secondary metabolites (A) synthesized via the shikimate and phenylpropanoid pathways.
- Because free phenolics can be chemically reactive and toxic to the plant cell itself, plants attach sugar molecules (glycosylation) to stabilize them.
- Consequently, they are stored inside cell vacuoles predominantly as water-soluble \(\beta\)-glycosides (B) (specifically bound to D-glucose via \(\beta\)-linkages), which also reduces their toxicity and protects them from premature oxidation.
Step 3: Final Answer:
Phenolics are secondary metabolites present mainly as \(\beta\)-glycosides, which corresponds to option (B).
Plants synthesize primary metabolites (such as sugars, amino acids, and lipids) essential for growth, as well as secondary metabolites that protect the plant against stress, pathogens, and UV radiation.
Step 2: Detailed Explanation:
- Phenolic compounds (including flavonoids, anthocyanins, and phenolic acids) are classic plant secondary metabolites (A) synthesized via the shikimate and phenylpropanoid pathways.
- Because free phenolics can be chemically reactive and toxic to the plant cell itself, plants attach sugar molecules (glycosylation) to stabilize them.
- Consequently, they are stored inside cell vacuoles predominantly as water-soluble \(\beta\)-glycosides (B) (specifically bound to D-glucose via \(\beta\)-linkages), which also reduces their toxicity and protects them from premature oxidation.
Step 3: Final Answer:
Phenolics are secondary metabolites present mainly as \(\beta\)-glycosides, which corresponds to option (B).
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