Step 1: Understanding Active Packaging:
Active packaging systems interact with the food, package, and environment to extend shelf life or improve quality, going beyond traditional passive barriers. They actively scavenge, absorb, or release substances.
Step 3: Active Packaging Examples:
- (B) Ethylene Scavengers: These absorb ethylene gas from fruits and vegetables, slowing ripening and senescence.
- (C) Antioxidant Release Films: These films contain antioxidants (e.g., BHT or vitamin E) that migrate into the food, preventing oxidative rancidity.
- (D) Moisture Absorbents: Also known as desiccants, these absorb excess moisture, inhibiting microbial growth (e.g., in fresh meat packaging).
- (A) MAP (Modified Atmosphere Packaging): In MAP, the package atmosphere is initially replaced with a specific gas mixture and then passively maintained. It differs from active packaging because it does not continuously and actively change the atmosphere.
Step 4: Conclusion:
Ethylene scavengers, antioxidant release films, and moisture absorbents exemplify active packaging. Thus, option (D) is the best answer.