Kudoa septempunctata is the causative agent of a food-borne disease associated with the ingestion of raw olive flounder. As the current qRT-PCR method for its detection is timeconsuming, a rapid and simple method is required. Recently, a new real-time loop-mediated isothermal amplification LAMP method and an immunochromatography method, whose sensitivities are intended to be compatible with that designated in the official analytical method 10 5 spores/g olive flounder , have been developed. To validate these new methods, we performed an inter-laboratory study across seven laboratories. Both methods could not detect less than 10 4 spores/g; however, these methods were able to detect more than 10 5 spores/g in olive flounder samples. These results demonstrated that the sensitivities of these methods were compatible with the designated level in the official analytical method. We concluded that these new methods were acceptable as the screening methods for K. septempunctata.
The mixed-species biofilm of Lactobacillus plantarum ML11-11 (LAB) and yeast had a double-layered structure with the ground layer composed of LAB cells, and the upper layer composed of coaggregates of LAB and yeast cells. The ability of LAB to adhere to both, the solid surface and the yeast cells, enabled the formation and maintenance of the biofilm as an ecosystem for LAB and yeast.
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