Efendi, Yahya, Agus Naba, and Arinto Yudi Ponco Wardoyo. 2025. “Optimizing Electronic Nose Performance for Detecting Coconut Sap Preservatives: A Comparative Analysis of Feature Extraction and Machine Learning Techniques”. Trends in Sciences 23 (2). Nakhon Si Thammarat, Thailand:11628. https://doi.org/10.48048/tis.2026.11628.