Production of desaturated fatty alcohols and desaturated fatty alcohol acetates in yeast

A yeast cell capable of producing desaturated fatty alcohols, said yeast cell expressing:

• i) at least one heterologous fatty acyl-CoA desaturase capable of introducing at least one double bond in a fatty acyl-CoA having a carbon chain length of 14, wherein said desaturase is selected from the group consisting of a Δ9 desaturase and a Δ11 desaturase;
• and:
• a. has an amino acid sequence having at least 80% homology to the Δ9 desaturase from Drosophila melanogaster as set forth in SEQ ID NO:
• 10;
• b. has an amino acid sequence having at least 80% homology to the Δ9 desaturase from Spodoptera litura as set forth in SEQ ID NO:
• 12;
• c. has an amino acid sequence having at least 80% homology to the Δ11 desaturase from Choristoneura parallela as set forth in SEQ ID NO:
• 66;
• or
• d. has an amino acid sequence having at least 80% homology to the Δ11 desaturase from Choristoneura rosaceana as set forth in SEQ ID NO:
• 65;
• and
• ii) at least one heterologous fatty acyl-CoA reductase (FAR), capable of converting at least part of said desaturated fatty acyl-CoA to a desaturated fatty alcohol
• wherein the fatty acyl-CoA desaturase has a higher specificity towards tetradecanoyl-CoA than towards hexadecanoyl-CoA and/or wherein the fatty acyl-CoA reductase has a higher specificity towards desaturated tetradecanoyl-CoA than towards desaturated hexadecanoyl-CoA and wherein at least 10% of the desaturated fatty alcohols have a carbon chain length of 14.