Topics:
Animal Refresher, Poultry Science
Home Preservation of Eggs — True Statements
Which of the following is true about home preservation of eggs?
- All of the above — Correct Answer
- In water glass method, sodium silicate seals pores of the shell only
- In lime water method, Ca(OH)₂ directly seals the pores
- Both methods can preserve eggs for 3 months at room temperature
Explanation:
Correct Answer: All of the above (referring to all three correct sub-statements)
All three sub-statements in the original question are true:
- Water glass (sodium silicate) method: 1 part sodium silicate dissolved in 10 parts water. The silica deposits and seals the pores of the egg shell, preventing gaseous exchange and microbial entry.
- Lime water (Ca(OH)₂) method: Ca(OH)₂ reacts with CO₂ from the egg to form a thin film of CaCO₃ on the shell surface, sealing the pores.
- Both methods can preserve eggs at room temperature for approximately 1 month.
Home vs. Commercial Preservation Methods
| Method | Scale | Duration |
|---|---|---|
| Water glass (Na silicate) | Home | ~1 month |
| Lime water Ca(OH)₂ | Home | ~1 month |
| Oil coating | Home/Commercial | Variable |
| Cold storage (14°C, 90% RH) | Commercial | 6–8 months |
Thermo-Stabilization
- Oil bath at 55°C / 15 min or 58°C / 10 min.
- Causes coagulation of a thin albumin layer below the shell membrane, blocking air and moisture passage.
- This is a commercial method for stabilizing albumin quality.
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Poultry Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
