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Comparison of Supercritical Fluid Extraction (SFE) and Pressurized Solvent Extraction (PSE) for the Recovery of gamma-Tocopherols in Walnut OilGamma-Tocopherol is the dominant form of Vitamin E in many commonly ingested foods in the human diet, such as plant seeds and nuts. In the past, supplement companies have focused on the health benefits of alpha-tocopherol.
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Ionization Efficiency for Environmentally Relevant Compounds Using APPI Versus EIAtmospheric pressure photoionization (APPI) and electrospray ionization (ESI) are assessed for the mass spectrometry (MS) quantification of pharmaceuticals frequently detected in environmental waters, including antibiotics, beta blockers, and selective-serotonin reuptake inhibitors.
Latest:
Ionization Efficiency for Environmentally Relevant Compounds Using APPI Versus EIAtmospheric pressure photoionization (APPI) and electrospray ionization (ESI) are assessed for the mass spectrometry (MS) quantification of pharmaceuticals frequently detected in environmental waters, including antibiotics, beta blockers, and selective-serotonin reuptake inhibitors.
Latest:
Ionization Efficiency for Environmentally Relevant Compounds Using APPI Versus EIAtmospheric pressure photoionization (APPI) and electrospray ionization (ESI) are assessed for the mass spectrometry (MS) quantification of pharmaceuticals frequently detected in environmental waters, including antibiotics, beta blockers, and selective-serotonin reuptake inhibitors.
Latest:
Ionization Efficiency for Environmentally Relevant Compounds Using APPI Versus EIAtmospheric pressure photoionization (APPI) and electrospray ionization (ESI) are assessed for the mass spectrometry (MS) quantification of pharmaceuticals frequently detected in environmental waters, including antibiotics, beta blockers, and selective-serotonin reuptake inhibitors.
Latest:
Ionization Efficiency for Environmentally Relevant Compounds Using APPI Versus EIAtmospheric pressure photoionization (APPI) and electrospray ionization (ESI) are assessed for the mass spectrometry (MS) quantification of pharmaceuticals frequently detected in environmental waters, including antibiotics, beta blockers, and selective-serotonin reuptake inhibitors.
Latest:
Ultraviolet Detectors: Perspectives, Principles, and PracticesThe authors provide a technical overview of the design and operating principles of variable wavelength and photodiode array detectors, and include historical perspectives and common practices in operation and maintenance.
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Pick Your Poison: Isolation of Paclitaxel (Oct 2024)The diterpenoid, paclitaxel, which was identified as a potent chemotherapy agent for breast and ovarian cancer originates from the Pacific Yew tree. The isolation of paclitaxel from its major impurities is shown with the use of Hamilton’s PRP-1 (5 µm) HPLC column.
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Ion Mobility–Mass Spectrometry for Food Analysis: An UpdateIn food analysis, many different biological matrices are investigated containing numerous compounds that can interfere with liquid chromatographyÐmass spectrometry (LC–MS) analysis. To overcome the challenges that arise with these highly complex matrices, the additional separation of analytes and matrix compounds complementing chromatographic separation is becoming more significant. In this article, the potential of IM-MS to increase selectivity and for additional identity confirmation is investigated. An extensive evaluation of IM-MS instruments was performed on a broad test set of food safety contaminants. The tested IM-MS platforms were DMS, TWIMS, low field DTIMS, and TIMS. CCS data were determined using the different instruments, and the ability to separate isomers and compounds of interest from sample matrix in the IM dimension was explored.
Latest:
Ion Mobility–Mass Spectrometry for Food Analysis: An UpdateIn food analysis, many different biological matrices are investigated containing numerous compounds that can interfere with liquid chromatographyÐmass spectrometry (LC–MS) analysis. To overcome the challenges that arise with these highly complex matrices, the additional separation of analytes and matrix compounds complementing chromatographic separation is becoming more significant. In this article, the potential of IM-MS to increase selectivity and for additional identity confirmation is investigated. An extensive evaluation of IM-MS instruments was performed on a broad test set of food safety contaminants. The tested IM-MS platforms were DMS, TWIMS, low field DTIMS, and TIMS. CCS data were determined using the different instruments, and the ability to separate isomers and compounds of interest from sample matrix in the IM dimension was explored.
Latest:
Ion Mobility–Mass Spectrometry for Food Analysis: An UpdateIn food analysis, many different biological matrices are investigated containing numerous compounds that can interfere with liquid chromatographyÐmass spectrometry (LC–MS) analysis. To overcome the challenges that arise with these highly complex matrices, the additional separation of analytes and matrix compounds complementing chromatographic separation is becoming more significant. In this article, the potential of IM-MS to increase selectivity and for additional identity confirmation is investigated. An extensive evaluation of IM-MS instruments was performed on a broad test set of food safety contaminants. The tested IM-MS platforms were DMS, TWIMS, low field DTIMS, and TIMS. CCS data were determined using the different instruments, and the ability to separate isomers and compounds of interest from sample matrix in the IM dimension was explored.
Latest:
Direct Analysis of Drugs in BiofluidsSample pretreatment is often a time consuming and labor-intensive step which can be a restricting factor for the rapid analysis. This is especially true for the analysis of drugs in biofluids containing many interfering matrices.
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Automated Gas and Liquid Chromatography Retention Time Modelling and Prediction Using Open-Access Molecular Database Structures and Quantitative Structure-Chromatography Retention RelationshipsThis article describes open access sofware for the modelling and prediction of retention times in gas and liquid chromatography. This software provides useful results for food analysis.
Latest:
Automated Gas and Liquid Chromatography Retention Time Modelling and Prediction Using Open-Access Molecular Database Structures and Quantitative Structure-Chromatography Retention RelationshipsThis article describes open access sofware for the modelling and prediction of retention times in gas and liquid chromatography. This software provides useful results for food analysis.
Latest:
Automated Gas and Liquid Chromatography Retention Time Modelling and Prediction Using Open-Access Molecular Database Structures and Quantitative Structure-Chromatography Retention RelationshipsThis article describes open access sofware for the modelling and prediction of retention times in gas and liquid chromatography. This software provides useful results for food analysis.
Latest:
Automated Gas and Liquid Chromatography Retention Time Modelling and Prediction Using Open-Access Molecular Database Structures and Quantitative Structure-Chromatography Retention RelationshipsThis article describes open access sofware for the modelling and prediction of retention times in gas and liquid chromatography. This software provides useful results for food analysis.
Latest:
Comprehensive Identification of Migrating Compounds from Plastic Food Packaging Materials Using LC–HRAMSThis study assesses whether two commonly used plastic packaging materials are safe for use using liquid chromatography (LC) with high-resolution acccurate mass spectrometry (HRAMS) and data‑independent acquisition (DIA).
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RAFA 2024 PreviewThe 11th International Symposium on Recent Advances in Food Analysis will be in Prague, Czech Republic from 5–8 November 2024.
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Categorizing Olive Oil Using Untargeted GC–MS with a Multivariate Statistical ApproachCarlos Sales and Joaquin Beltrán from The Research Institute for Pesticides and Water at the University Jaume I, in Castellón, Spain, discuss a novel untargeted gas chromatography–mass spectrometry (GC–MS) method, incorporating dynamic headspace (DHS) with thermal desorption and a novel deconvolution approach, to classify olive oil.
Latest:
Categorizing Olive Oil Using Untargeted GC–MS with a Multivariate Statistical ApproachCarlos Sales and Joaquin Beltrán from The Research Institute for Pesticides and Water at the University Jaume I, in Castellón, Spain, discuss a novel untargeted gas chromatography–mass spectrometry (GC–MS) method, incorporating dynamic headspace (DHS) with thermal desorption and a novel deconvolution approach, to classify olive oil.
Latest:
Glyphosate analysis in wine using SPESee a simple and fast SPE method for the LC-MS/MS analysis of glyphosate, AMPA, and glufosinate in red wine without derivatization using AFFINIMIP® SPE Glyphosate.
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Development and Validation of an HPTLC Method for Determination of Aflatoxin B1A high performance thin-layer chromatographic (HPTLC) method was developed for the determination of aflatoxin B1 in cereals.
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Determination of α-Amanitin in Human Serum by Solid-Phase Extracton Coupled with HPLC-UVA method is presented for the determination of ?-amanitin, a toxic cyclic octapeptide of amanitin mushrooms, in human serum by solid-phase extraction coupled with high performance liquid chromatography with UV detection.
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HPLC Autosamplers: Perspectives, Principles, and PracticesWe explain recent trends in HPLC autosampler design, provide recommendations for selecting one, and offer guidelines for operation and troubleshooting.
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Development of a Multi-Product SE-UHPLC Method for the Determination of Size-Variants in Bispecific Antibody FormatsThe versatile size-exclusion ultrahigh‑performance liquid chromatography (SE-UHPLC) platform method described here provides superior separation for bispecific monoclonal antibody formats compared to a previous method.
Latest:
Development of a Multi-Product SE-UHPLC Method for the Determination of Size-Variants in Bispecific Antibody FormatsThe versatile size-exclusion ultrahigh‑performance liquid chromatography (SE-UHPLC) platform method described here provides superior separation for bispecific monoclonal antibody formats compared to a previous method.
Latest:
Development of a Multi-Product SE-UHPLC Method for the Determination of Size-Variants in Bispecific Antibody FormatsThe versatile size-exclusion ultrahigh‑performance liquid chromatography (SE-UHPLC) platform method described here provides superior separation for bispecific monoclonal antibody formats compared to a previous method.
Latest:
Development of a Multi-Product SE-UHPLC Method for the Determination of Size-Variants in Bispecific Antibody FormatsThe versatile size-exclusion ultrahigh‑performance liquid chromatography (SE-UHPLC) platform method described here provides superior separation for bispecific monoclonal antibody formats compared to a previous method.
Latest:
Development of a Multi-Product SE-UHPLC Method for the Determination of Size-Variants in Bispecific Antibody FormatsThe versatile size-exclusion ultrahigh‑performance liquid chromatography (SE-UHPLC) platform method described here provides superior separation for bispecific monoclonal antibody formats compared to a previous method.
