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I know that this is true of (roasted) coffee but haven't been able to find any reliable information about mate in its smoked or steamed state. Thank you.

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After a bit of research I can say that Yerba mate does not contain beta-carbolines. Now, I don't know if this makes you happy or sad but the tea has many antioxidant properties which makes it good for health. You can find a list of the components in Yerba mate in paper 1 and this article.

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Hi. I'm the OP. I just wanted to thank you for your answer. – Pliny the ill Jun 22 '14 at 14:11

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