The present invention provides the polynucleotide encoding enzyme involved in lactone synthesis and a process for synthesis of lactones using said polynucleotides. The invention also provides recombinant plasmid expression vector comprising said polynucleotide sequence. The recombinant protein encoded by said polynucleotides leads to synthesis of lactones having flavour peculiar to Alphonso mangoes.

The present invention provides the polynucleotide encoding enzyme involved in lactone synthesis and a process for synthesis of lactones using said polynucleotides. The invention also provides recombinant plasmid expression vector comprising said polynucleotide sequence. The recombinant protein encoded by said polynucleotides leads to synthesis of lactones having flavour peculiar to Alphonso mangoes.