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1D and 2D NMR spectra of coffee from 27 countries
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1D and 2D NMR spectra of coffee from 27 countries

Javier Osorio, Victoria A. Arana, Jessica M. Medina, Rodrigo Alarcon, Edgar Moreno and Julien Wist
Research Square
Research Square Platform LLC
2021
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1D and 2D NMR623.63 kBDownloadView
CC BY V4.0 Open Access

Abstract

Applied Mathematics General Mathematics
715 green coffee samples were gathered by Almacafé S.A. (Bogotá, Colombia) between 2012 and 2014 from 27 different countries and analysed at the Nuclear Magnetic Resonance (NMR) laboratory at Universidad del Valle (Cali, Colombia). Over 1000 methanolic coffee extracts were prepared and a total of 4563 spectra were acquired in a fully automatic manner using a 400 MHz NMR spectrometer (Bruker Biospin, Germany). The dataset spans the variance that could be expected for an industrial application of origin monitoring, including samples from different harvest time, collected over several years and processed by at least two distinct operators. The resulting 1D and 2D spectra can be used to develop and evaluate feature extraction methods, multivariate algorithms and automation monitoring techniques, as a dataset for teaching, or as a reference for new studies on similar samples and approach.

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