The biosynthesis of lactones, key aroma components in fruits such as peach and nectarine (γ-decalactone
and γ-dodecalactone), pineapple (δ-octalactone), or coconut (Cocos nucifera L.) (γ-octalatcone), is also
associated with the β-oxidation pathway [134]. In fact, most hypotheses on lactone biosynthesis in
fruits put in contact the two major pathways producing aroma compounds from fatty acid, β-oxidation,
and LOX [4]. Despite the importance of these compounds in fruit aroma, there is a lack of enzymatic
studies in fruits, and microorganisms serve as a model for studying lactone biosynthesis [135].