Effect of various light emitting diode irradiation on volatile profiles of perilla oil using mass spectrometry-based electronic nose

Abstract

Volatile component changes in perilla oil caused by Light Emitting Diode (LED) irradiation at different wavelengths, darkness, and fluorescence light were evaluated using an MS-based electronic nose. Volatile component data were analyzed using discrimination function analysis (DFA) for perilla oil stored in amber vials for 12 weeks. The best storage condition was darkness. The largest volatile change occurred under blue LED and fluorescent irradiation. Rapid changes in volatile components were caused by fluorescent irradiation in the initial storage period, and by blue LED irradiation after 4 weeks. Overall volatile component changes were reduced under red and green LED irradiation, and least under darkness. Similarity was observed for influential ion fragments at 52 amu (atomic mass units) in the initial stage of storage, and for 78 amu after 4 weeks of storage.