Related Experiment Video
Updated: May 12, 2026

Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization
Published on: May 19, 2019
Analysis of irradiated cooked ham by direct introduction into the programmable temperature vaporizer of a
Carmen Barba1, Guillermo Santa-María, Marta M Calvo
1Instituto de Ciencia y Tecnología de Alimentos y Nutrición, ICTAN-CSIC, C/Juan de la Cierva 3, 28006 Madrid, Spain.
Abstract:
A simple method involving direct introduction (DI) of cooked ham into a programmable temperature vaporizer and subsequent thermal desorption for multidimensional chromatographic analysis as a tool for studying changes of volatile compounds during food irradiation has been proposed. Analysis of non-irradiated samples showed four peaks in the precolumn, which were identified on the main column as peak 1, ethyl acetate; peak 2, a mixture of octanol and ethyl propanoate; peak 3, (R,R)-2,3-butanediol, and peak 4, nonanoic acid. (R,R) and (S,S)-2,3-butanediol were detected in samples irradiated at 8 kGy, which may indicate that irradiation induces isomerisation. When a single cut was transferred from the precolumn to the main column, 1-tetradecene, n-pentadecane, 8-heptadecene and 1-hexadecene were detected in irradiated samples. This simple and easy method allows detection of radiolytic markers and isomerisation of 2,3-butanediol during irradiation of food.
Related Concept Videos
Gas Chromatography–Mass Spectrometry (GC–MS)
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...
Gas Chromatography: Sample Injection Systems
Two primary injection methods are used...
Gas Chromatography: Overview of Detectors
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
Gas Chromatography: Types of Detectors-II
Gas Chromatography: Types of Detectors-I
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
Sample Preparation for Analysis: Advanced Techniques
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
