The bacterium Aeromonas sp.(CGMCC 2226) can enantioselectively scavenge d-isomer, making l-amino acid derivatives (AADs) in high ee. The enantioselective scavenger (ES) has shown a broad substrate scope. Eleven l-AADs, Phe derivatives substituted with methyl-, mono-and dichloro-, bromo-, and nitro-group, were produced in high ee from corresponding racemates.