Dataset of Physicochemical and Activity Antioxidant of Kefir Grain Indonesia

This study provides a novel dataset of physicochemical and antioxidant parameters from ten artisanal milk kefir samples produced in different regions of Java, Indonesia. Measured variables include pH, titratable acidity, viscosity, total soluble solids (°Brix), protein, fat, and DPPH-based IC₅₀ values. All samples were fermented using traditional kefir grains under controlled conditions. Compared to existing datasets, this collection offers unique insights into regional variability of traditional milk kefir in Southeast Asia. The inclusion of antioxidant activity and multivariate PCA analysis enhances its value for quality assessment. This dataset can support future standardization efforts, inform regional food quality mapping, and serve as a reference for related microbiological or metagenomic studies.