{HEAD ~ The process} 1, further comprising {TAIL ~ a step} of esterification of the fatty acids to their alkyl ester derivative in the organic compartment 
comprising
{ HEAD ~ The process } 1 , further comprising { TAIL ~ a step } of esterification of the fatty acids to their alkyl ester derivative in the organic compartment
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH