Integrated Physicochemical, Spectroscopic, Granulometric, and Sensory Dataset of Single-Serve Coffee Capsules in Espresso and Lungo Preparations

The spectroscopic component comprises FT-NIR and ATR-FTIR data. The FT-NIR dataset contains 54 spectra acquired from 14,000 to 4,000 cm⁻¹ with 5,001 spectral points per spectrum. The ATR-FTIR dataset covers approximately 650–4,000 cm⁻¹ and contains 162 spectra corresponding to 18 coffee references, three independent capsules per reference, and three spectral measurements per capsule.

Sensory data were obtained from three experienced coffee assessors. The evaluation includes descriptive intensity scores for fragrance, aroma, flavor, aftertaste, acidity, sweetness, and mouthfeel, together with affective quality scores for these attributes and overall impression. Descriptive intensity was evaluated on a 0–15 scale, while affective quality was assessed on a 1–9 scale.

The dataset is intended to support research on the relationships among coffee particle size distribution, physicochemical properties, spectral fingerprints, packaging headspace conditions, and sensory quality in single-serve coffee systems. It can also be used for multivariate statistical analysis, chemometrics, principal component analysis, clustering, classification, and the development of predictive models based on FTIR and FT-NIR spectroscopy.