[tety]

This talks about detecting it in whole turmeric, any way of doing so for powdered turmeric?

[netzego]

It's right there :)

`Test 15 : Detection of artificial colour in turmeric powder`

- [1] https://eatrightindia.gov.in/dart/

[patja]

So you have to read between the lines and infer that "artificial colour" might be lead? Seems needlessly vague.