Surface mass spectrometry as a new approach for the characterisation of coffee

Abstract

Coffee is the most widely traded tropical agricultural commodity in the world with global production for 2016 of over 151 million 60‐kg bags, according to the International Coffee Organization. Such popularity and its chemical complexity demand the development of analytical chemistry methodologies for the characterisation of different coffee compounds. This paper proposes the use of time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) for this purpose. The main steps involving sample preparation and spectra acquisition are described alongside initial multivariate analysis results.

Analytical Methodologies for Agrometallomics: A Critical Review

“…For another, TOF-SIMS not only renders inorganic elemental information but also reflects organic composition characteristics. Cryo-TOF-SIMS analysis was employed to verify the distribution of Al, K, hydrangea blue-complex, and copigment in sepal tissues of one plant; TOF-SIMS was proposed to show the lipid profile of muscle fibers and intramuscular fat reflecting the composition of fats used as feed additives or the information on both volatile and nonvolatile compounds to classify the characterization of coffee . In addition, SIMS also reveals the diverse isotopic composition or ratio information , as well as chemical speciation of different oxidation states of some transition metals …”