Application Notes: Food and Beverage

Analysis of the six matrices processed yielded acceptable recoveries for all analytes with standard deviations below 20%. Analysis of an n-hexane blank sample resulted in no detectable target analytes measured within the calibration range of each respective compound.

Commission Regulation (EC) No 152-2009 published in the official Journal of European Union laid down the methods of sampling and analysis for the official control of feed. The Regulation describes methods of analysis to control the composition of feed materials and compound feed products. Establishing the amino acids profile is an important way to control quality and nutritional value of feeds.

Comprehensive 2D-LC enables the analysis and quantification of purine alkaloids and catechins in green and black tea. As expected, green tea contained higher amounts of the catechins epigallocatechin gallate and epicatechin than black tea.

Homogenize 2 g of dry tea leaves with 25 mL of Li220 for 5 min. Centrifuge and filter through 0.45 µm nylon filter.

Following sampling, tubes were transferred to a Markes UNITY™ thermal desorption system paired with an Agilent 7890B GC that was coupled to an Agilent 5977A MS detector. The UNITY™ system and GC–MS parameters are presented in Table I and Table II, respectively.

Theanine is a neurologically active amino acid found in tea plants. L-Theanine is a dominant amino acid in green tea and is responsible for its unique pleasant taste as well as known relaxation effect.

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

Due to the highly polar nature of saccharides, the analysis of sugars is typically achieved using hydrophilic interaction chromatography (HILIC).

This application note demonstrates the comprehensive 2D-LC analysis of different types of beer. Nontargeted, multisample analysis (fingerprinting analysis) enabled a classification of the different types of beer analyzed.

Organic arsenic compounds added to feed stocks of chicken and poultry pose serious environmental and ecological threats. National and worldwide health organizations, such as the United States Environmental Protection Agency and the US Food and Drug Administration, have recently implemented more stringent concentration limits for arsenic species in drinking water and foodstuffs.

The global demand for fish as a natural source of fresh animal protein, essential fats, minerals, and vitamins continues to rise with the human population.

In brewing, barley undergoes a malting process, the grain if first drenched to make it germinate and then dried in kilns to capture the sugar and flavor compounds for the brewing process.

Vicinal diketones (VDKs) are naturally produced compounds in the fermentation process. The monitoring of VDK levels is of great importance as the concentration of these compounds can greatly alter the flavor of a beverage.

B vitamins are a group of water soluble vitamins that play an important role in cell metabolism. This group consists of a number of compounds including thiamine (vitamin B1), riboflavin (vitamin B2), niacin and nicotinamide (vitamin B3), and pyridoxine and pyridoxal (vitamin B6).

Lactulose, a semi-synthetic disaccharide, is a useful indicator for heat induced modifications in milk. Lactulose can be derived from lactose by alkaline isomerization or enzymatic transgalactosylation of fructose.

Carbendazim is a widely used, broad-spectrum fungicide to control mold on citrus crops.

Due to the highly polar nature of saccharides, the analysis of sugars is typically achieved using hydrophilic interaction chromatography (HILIC).

Organic arsenic compounds added to feed stocks of chicken and poultry pose serious environmental and ecological threats.

Deoxynivalenol is a common mycotoxin found in agricultural grain crops and final consumer processed products.

This study illustrates the successful combination of fast GC and tandem mass spectrometry to determine 360 pesticides spiked in a QuEChERS apple extract.

Two species of spearmint oil (Mentha spicata and Mentha gracilis) are cultivated in the United States.

Agilent Technologies

Modified starches are important materials used in many applications including foodstuffs.

The dioxin family consists of 210 compounds, of which 17 contain the 2,3,7,8 pattern of chlorination.

Two species of spearmint oil (mentha spicata and mentha gracilis) are cultivated in the United States.

Hydrophilic interaction chromatography (HILIC) provides an alternative approach for the separation of highly polar substances.

QuEChERS is a quick-easy-cheap-effective-rugged-safe extraction method developed in 2003 for the extraction of pesticide residues in agricultural commodities (1,2).