Data table with samples' code, description and areas under the curves of assigned metabolites in CDCl3 exctract of milk by 1H-NMR 600MHz

<b>Description of the “datatable_metabolites.xlsx” file</b>This table contains quantitative metabolite data for a set of milk samples analyzed by NMR-based metabolomics.<b>Structure</b>:<b>Rows</b>: Each row corresponds to an individual milk sample.<b>Columns</b>:<b>Sample metadata</b>:<code>sample_numeric_code</code> — unique numeric identifier for each sample.<code>Sample_type</code> — category/type of milk (e.g., cow, goat, human, infant formula).<code>Brand</code> — commercial brand or label of the product.<code>year_collection</code> — year when the sample was collected.<b>Metabolite concentrations</b>: The remaining columns list quantified metabolites, expressed in arbitrary concentration units derived from NMR integration. Examples include amino acids (e.g., leucine, valine), organic acids (e.g., lactate, citrate), carbohydrates (e.g., lactose, galactose), oligosaccharides (e.g., 2FL, 3FL), and other compounds.<b>Purpose</b>:<br>The dataset is intended for statistical and comparative analyses of milk composition across different sample types, brands, and collection years. It can be used for exploratory data analysis (PCA, clustering), biomarker identification, and nutritional or quality assessments.