Which Lime Is Used in Dairy Product Processing?

Which Lime Is Used in Dairy Product Processing?

In dairy processing, lime is used mainly for pH adjustment, cleaning, sanitation, and neutralization. However, only specific food-safe lime types are allowed inside dairy plants. The lime used in dairy product processing is Food-Grade Hydrated Lime (Calcium Hydroxide) and sometimes Food-Grade Calcium Carbonate (CaCO₃) depending on the process.

Food-grade hydrated lime is used for pH correction, milk neutralization in certain products, and sanitation support. Calcium carbonate is used as a calcium fortifier in milk-based products and for stable pH control.

Both are safe, purified, and approved for food and dairy industry use.

Why Lime Is Used in Dairy Processing

  • Helps adjust pH in certain dairy processes
  • Used for neutralizing acidity
  • Improves texture in some milk-based items
  • Supports sanitation and CIP cleaning
  • Used in wastewater treatment of dairy plants
  • Food-grade calcium carbonate adds calcium enrichment
  • Safe and approved when food-grade quality is used

How Lime Works in Dairy Processing

Dairy products require accurate pH control for quality and safety.
Food-grade hydrated lime helps:

  1. Reduce extra acidity
  2. Balance pH during certain dairy formulations
  3. Support cleaning and sanitation (CIP)
  4. Neutralize acidic whey and wastewater
  5. Improve stability in flavored or cultured products

Food-grade calcium carbonate is added to milk powders, yogurt, flavored milk, and cheese as a calcium source and mild pH stabilizer.

Lime Type Scientific Name Food Safe? Used in Dairy? Purpose
Food-Grade Hydrated Lime (Correct) Calcium Hydroxide (Ca(OH)₂) ✔ Yes ✔ Yes Used for pH correction, sanitation, neutralization
Food-Grade Calcium Carbonate CaCO₃ ✔ Yes ✔ Yes Calcium fortification, pH control

Frequently Asked Questions (Q&A)

Food-Grade Hydrated Lime (Calcium Hydroxide) and Food-Grade Calcium Carbonate.

For pH control, neutralization, sanitation, and stability.

Yes — when it is food-grade.

No. It is unsafe for food applications.

Milk neutralization, sanitation, cleaning systems, wastewater treatment, and calcium fortification.

Not when used properly in controlled quantities.

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