Composition of almond oil. II. Distinction of sweet almond oil from blends with peach and apricot seed oil

Abstract

GLC analysis was used to detect adulteration of sweet almond oil by peach or apricot kernel oil. Tabulated results showed that 25 or 50% substitution could increase the linoleic acid content to >20% (the max. detected in almond oil), but 1 sample of peach kernel oil contained only 12.3% linoleic acid. A more secure detection was achieved by sterol analysis: >85% beta-sitosterol and <10% Delta 5-avenasterol were certain indices of adulteration (concn. in sweet almond oil 82.9 and 11.4% resp.). [See FSTA (1980) 12 03N0148for part I.]