Question:
Which of the following compounds, is not used to monitor Maillard reactions in milk product.
Which of the following compounds, is not used to monitor Maillard reactions in milk product.
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Furosine is the standard indicator for early-stage Maillard browning, whereas HMF serves as an indicator for intermediate-stage reactions during milk thermal processing.
Updated On: Aug 5, 2026
- Furosine
- Pyridosine
- HMF
- Fucose
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
The Maillard reaction is a non-enzymatic browning reaction that occurs in milk and dairy products during thermal processing and storage.
It involves the reaction of reducing sugars (primarily lactose) with the nucleophilic amino groups of milk proteins (mainly the lysine residues of casein).
Step 2: Detailed Explanation:
To assess the intensity of heat damage and monitor the progress of the Maillard reaction, several chemical markers are measured:
Furosine: During the early stages of the Maillard reaction, lactose reacts with lysine to form lactulosyl-lysine (an Amadori compound).
Acid hydrolysis of this compound yields furosine, which is a widely used marker for early-stage heat damage in pasteurized, UHT, and dried milks.
Pyridosine: This compound is another lysine-derived product formed during the hydrolysis of advanced Maillard intermediates and is used to monitor late-stage heat damage.
Hydroxymethylfurfural (HMF): Formed during the intermediate stage of the Maillard reaction through the dehydration of hexose sugars, HMF serves as a common indicator of thermal severity.
Fucose: Fucose is a natural methylpentose sugar (deoxy sugar) present in glycoproteins.
It is not a product or intermediate of the Maillard reaction and is not used to monitor heat-induced browning in dairy products.
Step 3: Final Answer:
Therefore, fucose is not used to monitor Maillard reactions in milk products.
The Maillard reaction is a non-enzymatic browning reaction that occurs in milk and dairy products during thermal processing and storage.
It involves the reaction of reducing sugars (primarily lactose) with the nucleophilic amino groups of milk proteins (mainly the lysine residues of casein).
Step 2: Detailed Explanation:
To assess the intensity of heat damage and monitor the progress of the Maillard reaction, several chemical markers are measured:
Furosine: During the early stages of the Maillard reaction, lactose reacts with lysine to form lactulosyl-lysine (an Amadori compound).
Acid hydrolysis of this compound yields furosine, which is a widely used marker for early-stage heat damage in pasteurized, UHT, and dried milks.
Pyridosine: This compound is another lysine-derived product formed during the hydrolysis of advanced Maillard intermediates and is used to monitor late-stage heat damage.
Hydroxymethylfurfural (HMF): Formed during the intermediate stage of the Maillard reaction through the dehydration of hexose sugars, HMF serves as a common indicator of thermal severity.
Fucose: Fucose is a natural methylpentose sugar (deoxy sugar) present in glycoproteins.
It is not a product or intermediate of the Maillard reaction and is not used to monitor heat-induced browning in dairy products.
Step 3: Final Answer:
Therefore, fucose is not used to monitor Maillard reactions in milk products.
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