In the present study, the formation of 5-HMF, F, 3H2P and FA generated during conventional or ohmic heating processing were investigated in chunky fruit desserts. Results revealed that accumulation of 5-HMF and F was in relation with the severity of heating (conventional vs. ohmic) applied to such fruit products during processing. Conversely, the production of 3H2P and FA mainly depended on AA oxidative degradation reactions rather than thermal degradations, as they were similarly formed in both heating treatments. The potential presence of DHA in fruit desserts could help to confirm the role of the oxidative pathway in losses of AA, provided this compound was stable enough to be determined in the processed apple-derived desserts.