Analysis of mixtures of long- and short chain FAs represents a challenge for the analyst.Short-chain FAMEs can escape from solution under elaboration, thus, biasing the results. Several approaches have been proposed to deal with the problems related to the loss of volatile short-chain methyl esters. Alcoholization is preferred in such cases [244]. Isopropyl esters can also be used, and the preparation of i-PrOH esters from carboxylic acids has been described [304]. n-Butanol may be used for the same purpose [246], or even decylalcohol–HCl [305]. For very short monocarboxylic FAs such as C1–C3, a recommended method is described by Watson and Crescuolo [306], utilizing p-bromobenzyl, p-methylbenzyl, or p-nitrobenzyl iodide dissolved in ethanol. The preparation of benzyl esters in cases of mixtures of short- and long-chain FAs in bacterial cultures was initially used by Corina and Dunstan [307] in response to problems of losses of short-chain FAs. The method was later extended to a variety of carboxylic acids by Corina [308].