Dataset of infrared spectroscopy measurements of intact and ground Longissimus thoracis and lumborum muscle of beef collected from different production systems in five European Countries

This dataset includes around 500 beef samples collected from 55 finishing farms across five European Countries and representing diverse production systems. UV‑Vis and NIR spectra were acquired using three spectrometers: two portable devices - FlameNIR and IndiGo - readings made on intact samples (IM), and one benchtop instrument - NIRS™ DS2500 - readings made on ground meat samples (GM). Data are reported as absorbance, expressed as log10(1/Reflectance), recorded in function of the wavelenghts. The dataset includes 5 Excel sheets: 1. DS2500: spectral data collected with the Vis/NIR benchtop device - NIRS™ DS2500 by Foss Analytical, Hillerød, Denmark. Spectral range: 400 - 2498 nm; spectral resolution: 2 nm. 2. FlameNIR: spectral data collected with the portable NIR device - FlameNIR by OceanOptics, Inc., Dunedin, USA. Spectral range: 935.4 - 1664.8 nm; spectral resolution: 5-6 nm. 3. IndiGo: spectral data collected with the portable Uv/Vis device - IndiGo from Goyalab, France. Spectral range: 460 - 700 nm; spectral resolution: 0.5 nm. 4. Classes: correspondence between farm ID and intensification classes identified in the paper from Caumette et al. (2026), available at: https://doi.org/10.1016/j.agsy.2026.104871 and recoded as Classes 0 to 5 in the paper from Lopez et al. 5. Samples Legend: legend to interpret the ID of individual samples and the acronyms used in the datasets