Probably not. Studies with mice gave the same fatal result with boiled extract.

If you mean boiling and throwing away the water, I haven’t seen any such discussions.

I think it’s good to know that you need to be careful with both of these species, and not eat too much too often - if you must eat them at all.

Thank you Irene, exactly what I wanted to know.

The Scientific American article is a rewrite of an Chemistry World article, which is in turn a review of an original “Chemistry - A European Journal article”:

DOI: 10.1002/chem.201400226

http://www.rsc.org/chemistryworld/2014/06/fatal-toxins-identified-edible-tricholoma-terreum-equestre-wild-mushrooms

According to several authors of myc. lit. this mushroom is edible but not particularly tasty, so in that respect there is no point in feeling sorry about the scientific conclusion!