The invention relates to a method for producing chiral \u03b1-hydroxycarboxylic crystalline acids consisting in transforming cyanhydrins or into \u03b1-hydroxycarboxylic acids or, respectively by enzymatic hydrolysis in the presence of Rhodococcus erythropolis NCIMB 11540. The invention thus relates to the plants, seeds and tissue cultures of the variety CV521290, and to methods for producing a corn plant produced by crossing a corn plant of variety CV521290 with itself or with another corn plant, such as a plant of another variety. A second ionization time of the spark plug is measured on a second engine stroke. However, one or both screens can be removed from the shower base to provide access to the wheelchair-bound person. The flexible cover is constructed and arranged to cover the associated compartments of the storage section. Once the device determines a particular phase of the polyphase power source system at the device, then the device joins a directed acyclic graph specific to the particular phase.