1985,Wade Davis,The Serpent and the Rainbow, Simon & Schuster, page111:
“Saponins aren't absorbed by the intestines. You've got to get the stuff into the blood.”
2015, Beth Terry,Plastic-Free: How I Kicked the Plastic Habit and How You Can Too[1], Simon and Schuster,→ISBN:
Soapnuts are the dried fruit of a tree called Sapindus mukorossi (Chinese Soapberry) and containsaponin, a natural surfactant that foams just like soap.
