Dear all, I looking for extract natural pigment in purple carrots and hibiscus to give to experimental rats without any dangerous chemical.
I want to remind you that every chemical is toxic when ingested in more than a certain - critical - amount: even water!
So I would advise you to reformulate your question.
Dear Awatef,
I agree with Dr C.A Kan that each material can be toxic at certain level. Probably you mean with the word toxicity that the extraction take place in non toxic solution (This is my expectation) so focus only on how to extract the materials you mentioned, and ignore to use the word toxicity. In the first place you gonna to extract food ingredients that are natural sources with low possibility of toxicity. So focus on the extraction methods to give to rats. So my be formulate your question as.
How can I extract purple carrots, hibiscus and mangoes to give to rats?
Good luck
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