Pesticides in Food

Omni International offers a variety of technologies for preprocessing of food products prior to pesticide extractions.

For large plant samples, the Omni Mixer and Macro homogenizers are capable of rapid sample dissociation within sealed chamber assemblies. that require complete plant sample disruption and the flexibility to process samples in a wide range of volumes.

When high throughput sample processing is required, the Omni Prep 96 automated rotor-stator homogenizer provides walk-away sample processing of up to 96 samples per cycle.

A more recent approach has been to homogenize the plant material through bead beating on the Bead Mill Homogenizer, a process in which the plant material is placed in a sealed tube with beads and vigorously shaken to produce a final homogenate of sub-micron particle sizes. The advantage of this approach is that the homogenization can be performed in a 50 mL centrifuge tube containing 15 g of plant material and 5 to 15 mL of acetonitrile which is the starting solvent for common QuEChERs extractions.