Common Fruits Coated with Wax
Many fruits and vegetables are washed after harvesting, removing the natural protective wax layer. A food-grade wax is then applied to replace it. Fruits commonly receiving this treatment include:
- Apples: Waxing helps retain moisture and firmness.
- Citrus Fruits: Such as oranges, lemons, and limes, are waxed to reduce water loss and maintain appearance, especially during shipping.
- Tropical Fruits: Mangoes, papayas, and passion fruit are often coated for preservation during long transport.
- Stone Fruits: Peaches, nectarines, and plums may be waxed for freshness and appearance.
- Melons: Cantaloupes and honeydew can receive wax to reduce moisture loss and slow ripening.
- Other Produce: Avocados, cucumbers, bell peppers, and tomatoes are also frequently waxed.
Why are Fruits Coated with Wax?
Waxing is done to protect and preserve produce after its natural wax is removed during washing. The benefits include:
- Moisture Retention: Prevents dehydration and shriveling.
- Extended Shelf Life: Slows aging, keeping fruit fresh longer.
- Protection: Guards against bruising, microbes, and damage during transport.
- Improved Appearance: Provides a glossy, appealing finish.
Types of Food-Grade Waxes
Food-grade waxes are used and considered safe by the FDA. Sources include:
- Natural: Carnauba wax (from palm trees), shellac (from lac insects), and beeswax.
- Petroleum-Based: Paraffin, mineral oil, and polyethylene, purified to food-grade standards.
- Allergen Concerns: Some coatings may contain milk, soy, or wheat proteins.
How to Identify and Remove Wax
While safe to eat, some prefer to remove the thin wax layer. Waxed fruit often looks extra shiny compared to unwaxed or organic options. To remove it without chemicals:
- Hot Water: A brief dip in hot water softens wax for easy wiping with a cloth.
- Vinegar and Baking Soda: Soak fruit in warm water with baking soda and vinegar, then scrub gently.
- Rubbing: Use a mixture of apple cider vinegar and water and rub with a cloth.
Waxed vs. Unwaxed Fruit Comparison
| Feature | Waxed Fruit | Unwaxed Fruit |
|---|---|---|
| Appearance | Often has a uniform, glossy, and shiny surface. | Typically has a duller, more natural, or matte finish. |
| Shelf Life | Significantly longer shelf life due to reduced moisture loss and spoilage. | Shorter shelf life and can shrivel or spoil more quickly. |
| Nutrients | The nutritional value is largely unaffected by the edible wax coating. | Contains all nutrients, and some prefer it for its minimally-processed state. |
| Pesticides | Commercial waxing may sometimes follow pesticide application. Washing is always recommended. | May still have pesticides from farming practices. Thorough washing is essential. |
| Washability | May require more effort to remove the coating, especially for citrus intended for zesting. | Easier to clean, especially when using the skin or zest. |
Conclusion
Many common fruits like apples and citrus are coated with food-grade wax to extend shelf life and maintain appearance, replacing the natural wax lost during cleaning. These edible coatings are considered safe by health authorities, but unwaxed options, often organic or found at farmers' markets, are available for those who prefer them. Washing all produce thoroughly before eating, regardless of waxing, is important for removing dirt and residues. Simple methods like a hot water rinse or baking soda wash can remove wax. The use of food-grade wax helps maintain the quality and freshness of produce.