Q107: Which one of the following reagent is used for detection... - Milk Adulteration, Contaminant Analysis & Dairy Effluent Testing - Dairy Chemistry- ICAR JRF/SRF 2024 | Agrigyan
Detection of Synthetic Detergent Adulteration in Milk:
Methylene Blue Extraction Assay:
Detergents contain anionic surfactants (e.g., linear alkylbenzene sulfonates, LAS).
Anionic surfactants form an ion-pair complex with the cationic dye Methylene Blue, which is extracted into chloroform, imparting an intense blue color to the lower chloroform layer.
Conclusion: Methylene Blue (Option 4).
Correct option: (4) Methylene Blue
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