Solar drying of Mushroom Introduction Drying is the process of removal of water from any product. The preservation of foods by drying is the time-honored and most common method used by humans and the food processing industry. The principle behind the preservation of any food product by drying is the reduction of water activity, which in turns acts a strong hurdle for the spoilage factors like enzymes and microbes. Procedure Flow ChartofBotton M ushroom Preservation Using HurdleTechnology(pH, Salt) Fresh Botton M ushroom Cleaning and Trim ming Hurdle solution preparation Dip M ushroom in Hurdle solution Airtightcapping Keptin room tem perature for3 months Sensory analysis (Color,appearance and sm ell) End Flow ChartofOysterm ushroom drying after hurdle treatm ents (pH,Salt) Fresh OysterM ushroom Dividing equally into three parts Hurdle solution preparation Dipping in thatsolution Control Drain and kepton tray SolarDrying Packing Rehydration Rehydration ratio calculation Start End Start