Shelf life and storage conditions of food-grade greases

Food-grade greases used in food production stand out for reducing friction in machinery and equipment, while also being non-toxic and safe in areas where contact with food is possible. The shelf life and storage conditions of these products are critical for maintaining their effectiveness and safety.

1. Shelf Life

• The shelf life of most food-grade greases is 2–5 years.
• The shelf life is indicated on the packaging by the manufacturer.
• The effectiveness of the grease can be monitored by its color, consistency, and viscosity properties; use is risky if deterioration occurs.

Signs of deterioration:

• Separation or formation of a liquid phase
• Change in odor
• Thinning or hardening of consistency

2. Storage Conditions

1. Temperature
   • Storage at room temperature (15–25°C) is ideal.
   • Avoid extreme hot or cold environments; very high temperatures can alter the chemical structure of the grease.
2. Humidity and Light
   • Must be stored in a dry environment, away from direct sunlight and humidity.
   • Humidity can disrupt the emulsion structure of the grease and shorten its shelf life.
3. Sealed Packaging
   • The grease tube or container should be kept unopened and tightly sealed.
   • Once opened, it should be used as soon as possible (according to manufacturer's instructions).
4. Cleanliness
   • The storage area must be clean and free of dust; contamination of the grease risks food safety.

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