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Which fruits are coated with wax for shine and preservation?

3 min read

Approximately 70% of produce receives an edible wax coating after harvesting. This common commercial practice, especially for fruits like apples, citrus, and cucumbers, is used to replace the fruit's natural protective layer removed during washing and to give it a fresh, shiny appearance.

Quick Summary

After harvesting and cleaning, many fruits receive a food-grade wax coating. This process prevents moisture loss and spoilage, enhances cosmetic appeal, and extends shelf life.

Key Points

  • Commonly Waxed Fruits: Fruits like apples, citrus, mangoes, and cucumbers often receive an edible wax coating after harvesting.

  • Purpose of Waxing: Waxing replaces the natural protective coating lost during cleaning, preventing moisture loss, inhibiting mold, and enhancing appearance.

  • Food-Grade Waxes are Safe: Waxes like carnauba, shellac, and beeswax are approved as food-grade and pass through the body undigested.

  • Identifying Waxed Fruit: Look for a uniform, shiny surface; unwaxed fruit typically looks duller.

  • Easy Wax Removal: Wax can be removed with hot water or a baking soda and vinegar soak/scrub.

  • Organic vs. Conventional: Organic produce is usually sold unwaxed, offering an alternative for those wishing to avoid wax.

  • Washing is Always Advised: Always wash produce to remove dirt and residues, whether it is waxed or not.

In This Article

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.

Frequently Asked Questions

Yes, the wax used on fruits is food-grade and deemed safe for consumption by health authorities like the FDA. It is not absorbed by the body.

Food-grade waxes come from natural sources like carnauba wax, shellac, and beeswax, or from petroleum-based sources like paraffin, purified to safety standards.

Wax is applied to replace the natural protective coating removed during washing, helping to prevent moisture loss, reduce spoilage, and improve appearance.

Waxed fruits usually have a distinct, uniform shine or glossy surface. Unwaxed fruits tend to have a less shiny, more natural texture.

Yes, unwaxed options are available, often found in organic sections of stores or at farmers' markets, as organic produce is typically not waxed.

You can remove wax by soaking fruit in warm water with baking soda and vinegar or by scrubbing it under hot running water.

Washing helps remove surface wax and most pesticide residues, but complete removal of all traces is unlikely. Using a brush or a baking soda solution can enhance effectiveness.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.