Abstract: The present invention refers to a new enzymatic process for obtaining 17?-monoesters of cortexolone and/or its 9,11-dehydroderivatives starting from the corresponding 17?,21-diesters which comprises an enzymatic alcoholysis reaction. Furthermore, the present invention refers to new crystalline forms of cortexolone-17?-propionate and 9,11-dehydro-cortexolone 17?-butanoate.

Abstract: A deep fat fryer with submerged-pipe heating includes a frying vat containing a bath of oil or fat frying medium in which heating pipes exchanging heat with the frying medium are submerged. The heating pipes are heated up by respective flows of flue gases moving therethrough from one or more gas burners. The burners are powered fully or partially pre-mixed burners including a blower that takes in ambient air and, on the delivery side thereof, blows the air into a sealed container which is delimited on a side thereof by a perforated baffle whose perforations are concentrated in a plurality of pre-defined zones arranged substantially in front of the inlet openings of the pipes. Distinct flame torches on the outside of the perforations propagate at least partially into the respective inlet openings of the pipes.