Part No: P081Issued year: 2014File size: 0.42mbFile type: pdf
This poster describes a reduced workflow solid phase extraction method for extraction of vitamin B7 (biotin) from human serum. Using EVOLUTE EXPRESS AX 96-well plates, the traditional sorbent conditioning and equilibration steps are not required, meaning the sample can be applied directly to the dry plate. Post extraction evaporation is also eliminated.
Part No: P091Issued year: 2014File size: 0.38mbFile type: pdf
This report details a “load, wash, elute” weak cation exchange solid phase extraction procedure amenable to both plasma and urine samples. The extracts are subsequently injected into an LC-MS/MS system. The preliminary sample preparation method was developed at the Biotage US Applications lab (Charlotte, NC).The method was then transferred to Ionics (Bolton, ON, Canada) to facilitate the nmole/L measurements of the selected biomarkers
by laminar flow tandem mass spectrometry. The SPE-LC-ESIMS/ MS method parameters were first optimized using pooled mixed gender plasma. A set of patient samples (n=32) was later supplied by the Mayo Clinic (Rochester, MN) that had previously been analyzed by a validated referee method. The population represented measured values across a range of clinical relevance.
Part No: AN111-HORIssued year: 2016File size: 2.03mbFile type: pdf
The compound 4-methylimidazole (4-MEI) is formed as a byproduct in some foods and beverages. Caramel coloring Type III and Type IV in beverages is one of the ingredients which may contain 4-MEI. Products that potentially contain 4-MEI include certain colas, beers, soy sauces, breads, coffee, ammoniated livestock feed and other products.
Part No: P183Issued year: 2018File size: 1.3mbFile type: pdf
The compound 4 Methylimidazole (4-MeI) is made during the production of caramel color commonly found in foods and beverages, especially sodas.
The Codex Alimentarius of the World Health Organization sets a limit of 250 mg/kg of 4-MeI. Also, the state of California has added 4-MeI to its Prop 65 list at an exposure level of 29 μg/day.
This study looks at 4-MeI levels in sodas and malt sodas which
are sold in and outside the state of California. The first section, included in this poster, describes the performance of automated solid
phase extraction of 4-MeI using conventional HPLC/MS detection.
ASMS 2018, San Diego, CA
Part No: P044Issued year: 2012File size: 0.89mbFile type: pdf
The objective was to develop a GC-MS assay for the determination of free benzodiazepines using Supported Liquid Extraction (SLE). The SLE extraction mechanism is very efficient, delivering higher analyte recoveries and cleaner extracts than equivalent LLE methods.
ISOLUTE, SLE, SLE+, Supported Liquid Extraction, Benzodiazepines, Forensic, Drugs, DOA, Drugs of Abuse, SOFT,
Part No: Issued year: 2016File size: 0.94mbFile type: pdf
Cortisol measurement in hair samples scan be a useful indicator of chronic stress. This poster compares a new LC-MS/MS method with an existing immunoassay based method.
The Biotage Bead Ruptor is used effectively for hair pre-treatment.
Part No: AN051-HORIssued year: 2009File size: 0.65mbFile type: pdf
The DryDisk® Separation Membrane was designed to replace conventional sodium sulfate in the drying of sample extracts. The DryDisk® is a hydrophobic membrane, consisting of a GORETEX ® process filtration media based on polytetrafluroethylene (PTFE). The hydrophobic property of the membrane allows the extracting solvent to pass through it, while retaining any water in the sample extract on the membrane’s surface.
Part No: AN098-HORIssued year: 2014File size: 2.32mbFile type: pdf
Mycotoxin testing awareness has increased as countries involved in world trade of raw agriculture and processed consumer products rely on a safe global food supply. Several mycotoxins are naturally produced and monitored; however, aflatoxins, produced mainly by the Aspergillus species, are considered to be the most important mycotoxin group in the world’s food supply to monitor.
Part No: PPS498Issued year: 2018File size: 0.9mbFile type: pdf
PeptiDream Inc. relocated their head office in August 2017 and established its new research
center in the Kawasaki City International Strategic Center. The expanded facility is expected
to spawn innovative new drugs. The base instrumentation is provided by Biotage. R&D
Director Keichi Masuya and his staff elaborate on the development.
Part No: P159Issued year: 2017File size: 0.25mbFile type: pdf
When it comes to polar organic compound purification,
many chemists turn to normal-phase flash
chromatography often utilizing dichloromethane and
methanol as the eluting solvents. While this can work, it
often can be challenging to optimize due to methanol’s
high polarity and protic chemistry.
Part No: PPS510Issued year: 2019File size: 1.24mbFile type: pdf
Peptide purification via flash
chromatography has recently been demonstrated as a viable
alternative to the more standard HPLC methods currently
utilized. Flash chromatography offers peptide chemists the
advantage of significantly greater loading capacity reducing the
overall purification time but with a compromise of decreased
peak resolution. Herein we present several strategies that,
when implemented, allow for very high purity peptide samples
purified by flash chromatography.
Part No: MSACL US 2018 Breakfast SeminarIssued year: 2018File size: 3.24mbFile type: pdf
The use of LC/MS analysis in the clinical lab has increased exponentially over the last 10 years. Modern mass spectrometers are extremely sensitive allowing low level detection of many target analytes. However, this sensitivity can come at a price, in that levels of contamination not previously detected with less sensitive instruments can now have larger impact on analysis. The complexity of common matrices such as plasma/serum and urine while presenting different challenges can have a marked influence on method performance.
As a result sample preparation is an extremely important part of the process in order to provide robust methods. This seminar focuses on some of the method development challenges our lab faced when looking at two clinical assays:
Endogenous steroid hormone extraction from serum, and catecholamine extraction from plasma and urine.
Particular emphasis is placed on the various sample preparation options we looked at for the extraction of these analytes. During optimization of the extraction process we investigated analyte recovery, co-extractable matrix components, HPLC column degradation, calibration curve performance and limits of quantitation.
MSACL US 2018 Breakfast Seminar
Part No: TN-0022.0207Issued year: 2007File size: 0.08mbFile type: pdf
ACTU Preparation of PS-HOBt(HL). 2-Chloro-1,1,3,3 tetramethyluronium hexachloroantimonate (ACTU) is a reagent which allows polymer-supported active esters of PS-HOBt(HL) to be prepared in pure DMF. ACTU addresses the problem that many carboxylic acids are not soluble in DCM.
Part No: PPS457Issued year: 2017File size: 0.02mbFile type: xlsx
Use this simple tool to look up possible adducts and fragments which may occur with Isolera™ Dalton or Biotage® Dalton 2000 mass detectors.
Enter the target compound weight and use the mass lookup cell to highlight resulting m/z values.
Part No: Issued year: 2008File size: 0.2mbFile type: pdf
Advancer Kilobatch provides up to 12 hours unattended processing of homogenous reaction mixtures delivering kilogram quantities of your target compound. In addition, the system
will accommodate heterogeneous reactions by processing four sequential cycles (250 mL) to yield a 1 L batch. Through simple solid loading replenishment, kilogram quantities of
complex heterogeneous reactions are easily achieved.