Cordyceps sinensis is a highly valued medicinal mushroom that loses its nutritional benefits quickly when stored fresh. This research tested different storage methods to keep it fresh longer, finding that packaging in a special gas mixture (80% nitrogen and 20% carbon dioxide) worked best for preserving its valuable compounds during 12 days of cold storage. The study also found that using UV light treatment could reduce browning, while vacuum sealing best prevented the mushroom from drying out.