... most notably in the seeds (kernels) of apricot (known as bitter almonds ), peach, and plum. Since the early 1950s, both ... the misnomerVitamin B.Amygdalin was first isolated in 1830 from bitter almond seeds. Amygdalin is a cyanogenic glycoside derived from the aromatic ... contained in fruit kernels, such as apricot (8%), peach (6%), bitter almond (5%), and plum (2.5%). The active ingredient in amygdalin ...