 The compound is present in what is commonly referred to as the aloe latex that exudes from cells adjacent to the vascular bundles, found under the rind of the leaf and in between it and the gel.When dried, it has been used as a bittering agent in commerce (alcoholic beverages) [21 CFR 172.510.Scientific names given include "Aloe perryi", "A. barbadensis" (= "A. vera"), "A. ferox", and hybrids of "A. ferox" with "A. africana" and "A.