7 Fatty Acid Profiling of Oils
Olive oil is a very valuable commodity, which in some circumstances has led to the illicit practice of adulteration with cheaper oils (e.g hazelnut or sunflower oil). To combat this, a method known as FAME profiling can be used for oil identification. FAME profiling is the process of analysing the ratios of individual fatty acids within an oil sample. It works on the basis that different oils contain primarily different ratios of fatty acid types. To allow for analysis, the oils must first be derived to their fatty acid methyl ester equivalent (FAME).
This allows manufacturers and wholesalers the ability to confirm the authenticity of the products being bought and sold.
The Ellutia 200 series Gas Chromatograph (GC) is an ideal instrument for this analysis. The 200 series GC comes with a split split-less injector, fully temperature programable oven, electronic carrier gas control, and a flame ionisation detector as standard. The compact size (16(H) x 41(W) x 34(D) cm) and lower purchase cost makes it ideal of all sizes of budgets and laboratories.
For more information, a detailed application note has been produced. More information online:
ilmt.co/PL/GvJG
Multiple Uses of Nitrosamine Testing in the Brewing Industry
(NDMA) is a known animal carcinogen and is produced as a biproduct during the kiln
drying phase of the malting process. Whilst techniques are utilised to minimise the formation of nitrosamines low levels of carcinogens may remain. To regulate the exposure of nitrosamines from the consumed liquid it is vital to monitor levels of NDMA within the malt and the final product. This can be achieved using the Ellutia 800 Series Thermal Energy Analyser (TEA) interfaced with a gas chromatograph. Its simple operation, very high sensitivity and very high selectivity for nitroso compounds makes the TEA a superior choice of detector for this application.
Brewing plants should be caustically cleaned on a regular basis. The effectiveness of cleaning can be assessed by analysing the levels of apparent total N-nitroso compounds (ATNC). This acts as measure of microbiological contamination; as a source of the N-nitroso compounds is from bacteria species with nitrate reductase activity.
ATNC does not require speciation, therefore a GC is not required to perform separation prior to analysis. Ellutia has developed a glassware interface for the 800 series TEA which streamlines the analysis process. This method is included in industry standards set by food safety certification schemes, such as SALSA
More information online:
ilmt.co/PL/DvEv
800 Series TEA
Nitro, Nitroso & Nitrogen Detector
Very High Selectivity and Sensitivity
Interface with most GC’s Glassware & LC Systems available
Application areas:
- Nitrosamine Analysis - Explosives Analysis - Nadroparin Calcium Analysis - ATNC Analysis
For more information contact:
email:
info@ellutia.com tel: +44 (0)1353 669916
www.ellutia.com
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