Q.1
Aquatic Environmental Management- ICAR JRF/SRF 2024 (Q.39)
MCQ (Single Correct)
+4
−1
The process of removing air from food cans is called
- Canning Technology - Exhausting:
- Exhausting: The critical thermal or mechanical unit operation of removing air and dissolved oxygen from the can contents and headspace immediately prior to hermetic double seaming.
- Methods include thermal exhausting (passing filled open cans through a steam chamber at $85-95^\circ\text{C}$ for $5-10\text{ minutes}$), mechanical vacuum exhausting, or steam-flow closure.
- Objectives: Creates an internal vacuum ($35-50\text{ kPa}$) upon cooling, prevents can ends from bulging during retorting, inhibits internal can corrosion, and preserves vitamin and lipid stability.
- Correct Option: Option 1 (Exhausting).
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