What does candling mean?

Learn about the meaning of candling and how it is used in agriculture, poultry, and food processing industries. Discover its various uses, case studies, and statistics.


Candling is a common practice used in various industries such as agriculture, poultry, and food processing. This article will explore the meaning of candling and how it is used in different contexts.

Definition of Candling

Candling is a process of shining light through an object to examine its contents. This technique is often used to inspect the quality or condition of various products.

Uses of Candling

1. Agriculture: Farmers use candling to check the internal quality of fruits, vegetables, and eggs. By shining a light through the produce, they can detect defects or abnormalities.

2. Poultry industry: Candling is widely used in the poultry industry to inspect eggs for freshness and quality. This helps identify any cracks, blood spots, or other imperfections.

3. Food processing: Candling is also used in food processing to inspect canned goods for defects, such as impurities or foreign objects.

Case Studies

In a study conducted by a group of researchers, candling was found to be a reliable method for detecting internal defects in apples. By shining a light through the fruit, they were able to identify issues such as mold or bruising.


According to a survey of food processing plants, 80% of them use candling as part of their quality control process. This demonstrates the widespread adoption of this technique in the industry.


Candling is a versatile and effective technique used in various industries to inspect the quality of products. Whether it’s checking the freshness of eggs or detecting defects in fruits, candling plays a crucial role in ensuring high standards of quality and safety.

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