PRESERVING THE YEAST
• Short-term storage
• Subculturing in rich media e.g. YMA, YPD
• Stable for 1 -2 weeks
• Medium-term storage
• Subculturing in agar slant
• Subculturing in broth
• Drying
• Stable for months
• Long-term storage
• Lyophilization
• Liquid-Drying
• Storing in low temperature (-20, -80)
• Stable for years