Amino acids can be fermented into short-chain fatty acids, including butyrate, acetate, propionate, and isovalerate, in the human gut, even without plant fiber.

“there are many ways that amino acids can be fermented into short chain fatty acids in the human gut I've spoken about this repeatedly everyone gets all worried and says if you're not eating plant fiber you can't get butyrate well here you absolutely can you can also get acetate propionate iso valour 8 iso butyrate different amino acids can easily be fermented into multiple short chain fatty acids including butyrate”

“there's a whole lot of easier ways to make butyric acid and that's deep fiber or you don't have to eat fiber to make butyric acid we know that butyrate can be used from ketones in the blood or you can eat amino acids and make butyric acid”