The characteristic VOCs of different parts of Artocarpus heterophyllus fruit based on HS-SPME-GC–MS and PTR-TOF-MS

Insight investigation on both edible pulps and inedible parts involving inflorescence axis and shreds of Artocarpus heterophyllus Lam were carried out, a total of 98 VOCs and 201 masses were identified by the combination of HS-SPME-GC–MS and PTR-TOF-MS. Among them, according to the consistency of OAV and results of VIP > 1, p  < 0.05, compounds methyl isovalerate ( A2 ), 3-methylbutyl acetate ( A5 ) and octanoic acid, ethyl ester ( A21 ) were recognized as aroma markers to distinguish the pulps, shreds and inflorescence axis. Meanwhile, the inflorescence axis (IC 50 : 1.82 mg/mL) and shreds (IC 50 : 16.74 mg/mL) exhibited more excellent antioxidant potency than pulps (IC 50 : 17.43 mg/mL) in vitro . These findings validated the feasibility of coupling HS-SPME-GC–MS and PTR-TOF-MS for rapid detection of characteristic VOCs of this plant, and offered new prospect of fragrance utilization and waste management of the edible and inedible parts of A. heterophyllus fruit.