Foods, Flavors & Fragrances Solutions

Foods, Flavors & Fragrances Solutions

MOSH/MOAH Standard (9 components)

  • Developed specifically for using LC coupled with GC-FID to accurately determine hydrocarbons found in mineral oils, which can migrate from processing equipment and packaging into food.
  • This 9-component mix contains noninterfering internal standards as well as both mineral oil saturated hydrocarbon (MOSH) and mineral oil aromatic hydrocarbon (MOAH) markers that are used to correctly cut LC fractions.

LC Multiresidue Pesticide Kit

  • Accurately detect and quantify pesticides of global food safety concern in a wide range of fruits, vegetables, and other commodities by LC-MS/MS.
  • Full kit contains 204 compounds of interest, covering many LC-determined pesticides listed by government agencies; individual ampuls also sold separately.

GC Multiresidue Pesticide Kit

  • Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables, botanicals, and herbals such as tea, ginseng, ginger, echinacea, and dietary supplements.
  • Comprehensive 203-compound kit covers food safety lists by the FDA, USDA, and other global governmental agencies; individual ampuls also sold separately.

Everything you need for QuEChERS!

  • Fast, simple sample extraction and cleanup using dSPE—Fourfold increases in sample throughput.
  • Complete offering for AOAC and European Methods.
  • Single and multiple component standards as specified in EN Method 15662.

Rxi-5Sil MS Columns (fused silica)

low-polarity phase; Crossbond 1,4-bis(dimethylsiloxy)phenylene dimethyl polysiloxane

  • Engineered to be a low-bleed GC-MS column.
  • Excellent inertness for active compounds.
  • General-purpose columns—ideal for GC-MS analysis of semivolatiles, polycyclic aromatic compounds, chlorinated hydrocarbons, phthalates, phenols, amines, organochlorine pesticides, organophosphorus pesticides, drugs, solvent impurities, and hydrocarbons.
  • Temperature range: -60 °C to 350 °C.
  • Some dimensions also available as Integra-Guard columns — a guard and analytical column in one to eliminate connection problems!

Flip Seal Dual Vespel Ring Inlet Seals

Restek Innovation! Patented.

Reversible Flip Seal Inlet Seal—Same Cost, Extended Lifetime
  • Reversible, two-sided design allows significantly more analyses than other seals, at the same price—simply use, flip, then use again!
  • Vespel ring embedded in top and bottom surface eliminates need for a washer.
  • Highly inert gold seals reduce breakdown and adsorption of active compounds, maximizing component transfer to GC column.
  • Very little torque required to make seal—reduces operator variability.
Note: The Flip Seal inlet seal requires a special reducing nut adaptor fitting, which is included in the kit.

Thermal Desorption (TD) Products

Thermal desorption (TD) tubes in a variety of styles, grab samplers, multiple tube sequential samplers, sampling pumps, and accessories.

Ultra Aqueous C18 Columns (USP L1)

Stationary Phase Category: modified C18 (L1)
Ligand Type: proprietary polar modified and functionally bonded C18
Particle: 3 µm or 5 µm, spherical
Pore Size: 100 Å
Carbon Load: 15%
End-Cap: no
Surface Area: 300 m2/g
pH Range: 2.5 to 8
Maximum Temperature: 80 °C


for Agilent HPLC Systems


for Waters Detectors


Featured Application: QuEChERS(抽出とクリーンアップ)を使用して玄米粉から抽出された多成分農薬混合物 - 7.5分のスクリーニング分析: 玄米粉中の多成分残留農薬

残留農薬の多成分一斉分析には、化学的に多様な分析対象の幅広いリストから複雑なマトリックス成分の悪影響にいたるまで、多くの課題があります。ここで紹介する クロマトグラフィー法の最適化では、わずか7.5分で数百の化合物の分析が可能となります。トータルのサイクルタイムでも10分未満となり、高速かつ正確なサンプルのスクリーニングとラボの生産性の向上を保証します。


Featured Application: QuEChERS(抽出とクリーンアップ)を使用して玄米粉から抽出された多成分農薬混合物 - 7.5分のスクリーニング分析: 玄米粉中の多成分残留農薬

残留農薬の多成分一斉分析には、化学的に多様な分析対象の幅広いリストから複雑なマトリックス成分の悪影響にいたるまで、多くの課題があります。ここで紹介する クロマトグラフィー法の最適化では、わずか7.5分で数百の化合物の分析が可能となります。トータルのサイクルタイムでも10分未満となり、高速かつ正確なサンプルのスクリーニングとラボの生産性の向上を保証します。


Residual Pesticides Analysis of Botanical Ingredients Using Gas Chromatography Triple Quadrupole Mass Spectrometry

Dietary supplements, which are consumed worldwide, are made from various botanical ingredients. To be safe from pesticides exposure, residual pesticides must be monitored by chromatographic instrumentation. Issues arise, however, due to the fact these botanical samples are dried and cause large interferences in the chromatography. This study shows that the modified QuEChERS method combined with GC-MS/MS achieves consistent pesticides monitoring in botanical ingredients.


Featured Application:Raptor ARC-18によるピロリジジンアルカロイドの分析 - LC-MS/MSによる

ピロリジジンアルカロイドの分析には時間がかかります。一般的な分析時間は15分かかる上、酸分解過程があるため分析カラムの寿命が短くなる可能性があります。これに対し、耐酸性のRaptor ARC-18カラムを使用したこの分析では、わずか3.2分で一番遅い化合物が溶出し、良好なピーク形状と分離も得られます。


Featured Application: Raptor Biphenylによるピーナッツパウダー中のマイコトキシン分析 - 分析時間5.5分のLC-MS/MSを用いた

ここで紹介するメソッドは、ピーナッツパウダー中のマイコトキシンの高速分析を可能にします。 FDAとEUで規制されている12のマイコトキシンのベースライン分離が、分析時間5.5分(サイクルタイム7分)で達成できます。このメソッドは、マトリックスマッチ検量線または安定同位体希釈法のいずれかを使用することで、さまざまなマトリックスに適用できます。 サンプルスループットは、分析毎の短いサイクルタイムによって大幅に改善されます。


Analysis of Synthetic Cannabinoids and Metabolites: Adding New Compounds to an Existing LC-MS/MS Method

The analysis of synthetic cannabinoids and their metabolites can be a difficult and challenging task. Keeping up with the ever-growing list of synthetic cannabinoids that illicit drugmakers produce further complicates the analysis. As shown here, the retention and selectivity of the Raptor Biphenyl column allows new drugs to be added to an existing method, providing labs with an important vehicle for improving efficiency and productivity.


Highly Reproducible Detailed cis/trans FAMEs Analysis Ensured by New Optimized Rt-2560 Column Manufacturing and Application-Specific QC Test

Even minor variations in manufacturing processes can potentially have detrimental effects on column-to-column reproducibility. As shown here, Rt-2560 GC columns produced using a newly updated and optimized manufacturing process exhibit high reproducibility and provide consistent performance for detailed cis/trans FAMEs analysis.


Rt-2560 Columns Ensure Accurate, Reliable AOAC 996.06 and AOCS Ce 1j-07 FAMEs Analysis

Restek has optimized the manufacturing process and implemented a new, application-specific QC testing procedure for all new Rt-2560 columns (cat.# 13198). Here we demonstrate that, Rt-2560 columns produced using the optimized process exhibit excellent performance for both AOAC 996.06 and AOCS Ce 1j-07 FAMEs analysis and meet all method requirements.


Analysis of Nicotine and Impurities in Electronic Cigarette Solutions and Vapor

Despite the growing popularity of electronic cigarettes, relatively little work has been done to characterize their vapor. In this study, we developed a quick, simple thermal desorption device for sampling vapor, as well as methods for analyzing vapor and solutions to determine nicotine content (GC-FID) and impurity profiles (GC-MS). This novel approach, which utilizes an Rtx-VMS column, provides detectable levels of volatile organic compounds (VOCs) and semivolatile organic compounds (SVOCs) from a single 40 mL puff.


QuEChERS法とSPEによる前処理を用いた GC-TOFMS および GC-MS/MSによるマテ茶中の多環芳香族炭化水素(PAHs)の分析



High-Quality Analysis of Pesticides in Cannabis Using QuEChERS, Cartridge SPE Cleanup, and GCxGC-TOFMS

As medical marijuana is more frequently prescribed, patient safety must be ensured. Pesticide residue testing is an important part of assuring safe product is dispensed, but analysis can be extremely challenging due to matrix complexity. The use of QuEChERS, cartridge SPE cleanup, and GCxGC-TOFMS as presented here, produces high-quality quantitative data for this difficult analysis.


Evaluation of Dispersive and Cartridge Solid Phase Extraction (SPE) Cleanups for Multiresidue Pesticides in QuEChERS Extracts of Finished Tobacco Using GCxGC-TOFMS

We compared the efficacy of dSPE and cSPE cleanup methods for multiresidue pesticide analysis of QuEChERS extracts of finished tobacco products using GCxGC-TOFMS. Cleanup with dSPE tubes containing 7.5 mg of GCB and 25 mg of PSA produced better results than other methods, with average recoveries of 92% and 91% for 500 ppb and 50 ppb fortifications respectively.


Matrix Effects in Multi-Residue Pesticide Analysis When Using Liquid Chromatography-Tandem Mass Spectrometry

Matrix effects present a significant challenge to multi-residue pesticide analysis of food samples using LC/MS/MS. In this editorial, Dr. Kai Zhang, of the FDA Center for Food Safety and Applied Nutrition, discusses approaches that minimize matrix effects.


Comparing Pesticide Residues in Amish and Commercially Grown Strawberries and Spinach Using QuEChERS, Various dSPE Sorbents, and GC-TOFMS

QuEChERS extraction, dSPE cleanup, and GC-TOFMS analysis were used to assess pesticide residue levels in strawberry and spinach from both commercial and Amish growers. Various dSPE sorbent products were compared to determine which were most effective.


Dual Vespel Ring Inlet Seals - Washerless, Leak-Tight Seals for Agilent GCs

Restek's Dual Vespel Ring inlet seal gives you a better seal with fewer parts. Data show that the soft Vespel material has a much lower leak rate than a metal seal. Also, since less torque is required for installation, user variability is reduced.

PDF Document

New Rxi-PAH GC Column; Resolve Important Isobaric Polycyclic Aromatic Hydrocarbons for Food Safety and Environmental Methods

Separate isobaric polycyclic aromatic hydrocarbons, including priority EFSA PAH4 compounds benz[a]anthracene, chrysene, benzo[b]fluoranthene, and benzo[a]pyrene, easily and accurately on an Rxi-PAH column. Whether you need more resolution or faster analysis, these new GC columns offer the selectivity and efficiency you need for food safety and environmental PAH analysis.

PDF Document

NEW! Rx-1301Sil MS GC Columns

The new Rxi-1301Sil MS column is ideal for the analysis of multiple compound classes across a range of polarities and volatilities. With its cyano-based selectivity and high thermal stability, it is the best 1301-type column for robust MS analyses.

PDF Document

HPLC Analysis of Glucosinolates in Vegetable Extracts without Ion Pairing Using an Ultra Aqueous C18 Column

Glucosinolates with hydrophilic functional groups are very difficult to retain by conventional reversed phase HPLC, and when the functional groups in a sample are diverse, polarity can differ widely, complicating the problem. Until now, reversed phase HPLC with an ion pairing reagent has been the inconvenient, but necessary, approach to these analyses. This 2-page note describes a column and conditions for analyses of glucosinolates, without ion pairing.

PDF Document

Thermal Desorption: A Practical Applications Guide: IV. Food, Flavour, Fragrance & Odour Profiling

Thermal desorption is used extensively for measuring volatile and semivolatile components in foods, flavors, fragrances, and odors. This 28-page publication from Markes International Ltd. presents several key applications.

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