Patent application number | Description | Published |
20090203017 | Use of Nucleic Acid Probes to Detect Nucleotide Sequences of Interest in a Sample - The invention relates to methods for the determination and detection of nucleic acids sequences in a sample. The nucleic acid may be RNA or DNA or both. The invention also relates to methods for the determination of the presence and species of various microorganisms in a sample. We have also identified a set of oligonucleotide nucleic acid sequences within the rRNAs of Gram-negative organisms that facilitates both the broad identification of Gram-negative organisms as a class when used as a pool, or in combination, for example in a hybridization assay. This set of oligonucleotides may detect sequences that are indicative of the presence of organisms of the broad class of Gram-negative organisms while exhibiting little or no false identification of Gram-positive organisms, and fungi, or other microorganisms. The assay includes concurrent incubation with at least one nucleotide sequence of interest, at least one nucleic acid probe, a fluorosurfactant, and a nuclease. The assay may further be employed to detect the presence of bacteria, fungi, or other microorganisms by use of additional specific probes, or to detect and/or identify target nucleic acid sequences in a sample. Further, the invention also relates to methods of reducing non-specific binding and facilitating complex formation in a binding assay. The binding assay may be, but is not limited to, a nucleic acid hybridization assay or an immunoassay. The invention also relates to methods of detection that employ at least one target of interest, which may be a nucleotide sequence, at least one probe, which may be a nucleic acid probe and a nuclease. | 08-13-2009 |
20120301907 | METHODS, DEVICES, AND SYSTEMS OF DETECTING MICROORGANISMS - A rapid, sensitive method of separating and detecting microorganisms from a sample potentially containing microorganisms, such as but not limited to bacteria, fungi, yeast, viruses, and the like. The method relies on separation techniques to separate and concentrate the cells from the sample, together with chemical techniques to amplify the amount of detectable signal from low numbers of cells to provide a rapid and sensitive method of detecting microorganisms. This detection method may utilize: a filtration device; a centrifugation device; a system; a swab device; and kit comprising one or more of the devices and components to perform the present method of separating and detecting microorganisms in a sample potentially containing microorganisms. The sample may be a chemical, cosmetic, personal care, pharmaceutical, or consumable good in its raw material, in-process, and/or finished product states that needs to be tested for any contaminating microorganisms prior to shipment to the consumer. | 11-29-2012 |
20150322476 | METHODS, DEVICES, AND SYSTEMS OF DETECTING MICROORGANISMS - A rapid, sensitive method of separating and detecting microorganisms from a sample potentially containing microorganisms, such as but not limited to bacteria, fungi, yeast, viruses, and the like. The method relies on separation techniques to separate and concentrate the cells from the sample, together with chemical techniques to amplify the amount of detectable signal from low numbers of cells to provide a rapid and sensitive method of detecting microorganisms. This detection method may utilize: a filtration device; a centrifugation device; a system; a swab device; and kit comprising one or more of the devices and components to perform the present method of separating and detecting microorganisms in a sample potentially containing microorganisms. The sample may be a chemical (e.g., household cleaners), cosmetic, personal care, pharmaceutical, or consumable (e.g., food or beverage) good in its raw material, in-process, and/or finished product states that needs to be tested for any contaminating microorganisms prior to shipment to the consumer. | 11-12-2015 |