Question:
Which of the following is a commonly used anti-foaming agents in the food industry?
Which of the following is a commonly used anti-foaming agents in the food industry?
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Silicon-based oils (polydimethylsiloxanes) are the universal industrial defoamers used in cooking oils and beverages.
Updated On: Jul 10, 2026
- Water-insoluble dimethyl polysiloxanes (silicon oils)
- Ethylenediaminetetraacetic acid (EDTA)
- Antioxidants
- Gums
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Anti-foaming agents (defoamers) are food additives used to prevent or reduce the formation of foam in liquid food processing and packaging.
Step 2: Detailed Explanation:
During industrial processes such as deep-fat frying, juice processing, or fermentation, excessive foam can disrupt operations and cause losses.
Dimethyl polysiloxanes (silicones) are water-insoluble, inert, and highly surface-active polymers. When added at very low concentrations, they spread rapidly at the air-water interface, destabilizing and collapsing bubble walls to suppress foaming.
EDTA is a metal chelator, antioxidants prevent oxidative rancidity, and gums are hydrocolloid thickeners.
Step 3: Final Answer:
Water-insoluble dimethyl polysiloxanes are the primary food-grade anti-foaming agents.
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