Abstract: This invention relates to a rapid method for detection and characterization of Escherichia coli bacteria serotype O157:H7 based on the presence of nucleic acid sequences, in particular, to a PCR-based method for detection, and to oligonucleotide molecules and reagents and kits useful therefore. This method is preferably employed to detect E. coli O157:H7 in a food or water sample, such as a beef enrichment. The present invention further relates to replication compositions and kits for carrying out the method of the present invention.

Abstract: This invention relates to a rapid method for detection and characterization of Escherichia coli bacteria serotype O157:H7 based on the presence of nucleic acid sequences, in particular, to a PCR-based method for detection, and to oligonucleotide molecules and reagents and kits useful therefore. This method is preferably employed to detect E. coli O157:H7 in a food or water sample, such as a beef enrichment. The present invention further relates to replication compositions and kits for carrying out the method of the present invention.

Abstract: This invention relates to a rapid method for detection and characterization of Escherichia coli bacteria serotype O157:H7 based on the presence of nucleic acid sequences, in particular, to a PCR-based method for detection, and to oligonucleotide molecules and reagents and kits useful therefore. This method is preferably employed to detect E. coli O157:H7 in a food or water sample, such as a beef enrichment. The present invention further relates to replication compositions and kits for carrying out the method of the present invention.

Abstract: This invention relates to a rapid method for detection and characterization of Escherichia coli bacteria serotype O157:H7 based on the presence of nucleic acid sequences, in particular, to a PCR-based method for detection, and to oligonucleotide molecules and reagents and kits useful therefore. This method is preferably employed to detect E. coli O157:H7 in a food or water sample, such as a beef enrichment. The present invention further relates to replication compositions and kits for carrying out the method of the present invention.

Abstract: This invention relates to a rapid method for detection and characterization of Escherichia coli bacteria serotype O157:H7 based on the presence of nucleic acid sequences, in particular, to a PCR-based method for detection, and to oligonucleotide molecules and reagents and kits useful therefore. This method is preferably employed to detect E. coli O157:H7 in a food or water sample, such as a beef enrichment. The present invention further relates to replication compositions and kits for carrying out the method of the present invention.

Abstract: This invention is a process for preparing a food or beverage sample containing yeast or mold cells for analytical testing. The food sample is prepared into the form of a filterable liquid, and then filtered using a glass microfiber filter. The filter containing the fungal cell retentate is then placed into a disruption vessel and bead beaten until the glass microfiber filter is completely disrupted into glass fibers in suspension. An aliquot can then be tested directly using melting curve analysis of PCR amplification product derived from the nucleic acids of the sample to detect the presence of the fungal cells from the sample.

Abstract: The present disclosure provides methods for molecular fingerprinting for the characterization and identification of organisms.

Abstract: The present disclosure provides methods for molecular fingerprinting for the characterization and identification of organisms.

Abstract: The present disclosure provides methods for molecular fingerprinting for the characterization and identification of organisms. More specifically, in one aspect the present invention provides a method of identifying an organism in a sample by embedding fingerprint bands from any amplification based fingerprinting method within a DNA sequence so that small differences in size are resolvable. Fingerprint output is provided in a text file format that can then be analyzed by bioinformatics tools.

Abstract: Oligonucleotide sequences and methods for specifically detecting and differentiating amongst pathogenic E. coli in a complex sample. The complex sample can be a food sample, water sample, or selectively enriched food matrix. The methods of detection may utilize PCR amplification with, or without, an internal positive control, and appropriate primer pairs. Reagents for performing the methods can be supplied as a kit and/or in tablet form.

Abstract: This invention is an improved process for preparing a food or beverage sample containing yeast or mold cells for analytical testing. The food sample is prepared into the form of a filterable liquid, and then filtered using a glass microfiber filter. The filter containing the fungal cell retentate is then placed into a disruption vessel and bead beaten until the glass microfiber filter is completely disrupted into glass fibers in suspension. An aliquot can then be tested directly using melting curve analysis of PCR amplification product derived from the nucleic acids of the sample to detect the presence of the fungal cells from the sample.

Abstract: The present disclosure provides methods for molecular fingerprinting for the characterization and identification of organisms.

Abstract: This invention relates to a rapid method for detection and characterization of Escherichia coli bacteria serotype O157:H7 based on the presence of nucleic acid sequences, in particular, to a PCR-based method for detection, and to oligonucleotide molecules and reagents and kits useful therefore. This method is preferably employed to detect E. coli O157:H7 in a food or water sample, such as a beef enrichment. The present invention further relates to replication compositions and kits for carrying out the method of the present invention.

Abstract: Oligonucleotide sequences and methods for specifically detecting and differentiating amongst pathogenic E. coli in a complex sample. The complex sample can be a food sample, water sample, or selectively enriched food matrix. The methods of detection may utilize PCR amplification with, or without, an internal positive control, and appropriate primer pairs. Reagents for performing the methods can be supplied as a kit and/or in tablet form.

Abstract: A method of analyzing a sample for detection of presence or absence of an organism of interest in the sample comprising (a) obtaining a sample; (b) subjecting the sample to a disruption treatment sufficient to fractionate any nucleic acid sequences present in the sample; and (c) detecting for presence or absence of an organism of interest in the sample. The detecting step (c) may comprise performing primer-directed amplification (preferably polymerase chain reaction) on the sample to produce an amplification result and analyzing the amplification result for an amplification product, wherein presence or absence of the amplification product is indicative of the presence or absence of the organism of interest in the sample.

Abstract: The present invention relates to compounds of the formula:R.sub.1 SCH(R.sub.2)CH(R.sub.3)CO-AA.sub.1 ?AA.sub.2 !.sub.m ?AA.sub.3 !.sub.n --X orHSCH.sub.2 ?CH.sub.2 CH(CH.sub.3).sub.2 !CO--Nal--NH.sub.2wherein Nal is L-3-(2-naphthyl)alanine;m is the integer 0 or 1; n is an integer from 0-2;AA.sub.1 is a non-polar hydrophobic aromatic amino acid;AA.sub.2 is alanine, glycine, leucine, isoleucine or phenylalanine;AA.sub.3 is one of the twenty naturally occurring amino acids, preferably glutamine or arginine;R.sub.1 is hydrogen, alkyl having from 1-10 carbon atoms, alkanoyl having from 2-10 carbon atoms, or aroyl having from 7-10 carbon atoms;R.sub.2 is hydrogen or alkyl having from 1-6 carbon atoms;R.sub.3 is hydrogen, alkyl having from 2-10 carbon atoms, cycloalkyl having from 3-6 carbon atoms, aryl or arylalkyl, wherein aryl moieties have from 6-10 carbon atoms;X is NH.sub.2, OH, OCH.sub.3 or OCH.sub.2 CH.sub.3 ;and salts thereof.