This document is a guide on Modified Atmosphere Packaging (MAP), which involves replacing air in packaging with specific gases to enhance food preservation. The gases commonly used include Carbon Dioxide (CO₂), Nitrogen (N₂), and Oxygen (O₂), each selected for their unique preservation properties. The guide explains how MAP can significantly extend the shelf life of various food products, detailing specific examples such as snacks, fresh meat, cooked meat, dairy, bread, and fruits. It outlines the benefits of MAP, including reduced spoilage, improved product quality, and increased customer satisfaction. The document also describes the essential components of MAP, including the protective atmosphere, packaging materials, and machines used in the process. Furthermore, it emphasizes the importance of precise gas mixtures tailored to different food products to ensure effective preservation. The guide concludes with information about Air Liquide's support services for implementing MAP solutions in food processing.