f33ea3c8_LIBRARY_AND_INFORMATION_CENTRE__Food_Article
[Adulterant] Metanil Yellow Add a few drops of HCl to the extract of turmeric from water. Instant appearance of violet, when the colour persists when diluted with water indicates the presence of metanil yellow. [Food Article] 
Turmeric Powder
PREVENTING FOOD ADULTERATION - N.D.R.K. NURSING LIBRARY AND INFORMATION CENTRE
Food Article