Microbial Contamination Testing of Frozen Vegetables Rinses Using the Concentrating Pipette™

Scientists at the United States Department of Agriculture (USDA) examined the effectiveness of theConcentrating Pipette™, equipped with a 0.2 μm hollow fiber filter "tip," in concentrating native foodborne bacteria from frozen vegetable rinses and bacterial recovery rates in E. coli-spiked buffers and the impact of concentration on bacterial composition. Their objective was to improve quantitative metagenomics analysis.

“Our findings suggest that the InnovaPrep concentration pipette system is effective for water-based food systems, including process water, vat rinses, food processing-related equipment rinses, produce wash water, and water/buffer-suspended surface/air samples coming out of food processing plants.”

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Bacterial cell recovery after hollow fiber microfiltration sample

concentration: Most probable bacterial composition in frozen vegetablesIrwin, et al.

LWT - Food Science and Technology 140 (2021) 110647