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Is the wax on apples good to eat? Understanding the safety of fruit coatings

3 min read

According to the U.S. Apple Association, apples naturally produce a protective wax layer, but a food-grade wax is reapplied after cleaning to preserve freshness. This common practice prompts many to ask: is the wax on apples good to eat, and does it pose any health risks? The short answer is yes, the coatings are safe, but a little more information can put your mind at ease.

Quick Summary

Food-grade waxes applied to apples are considered safe for consumption by regulatory bodies like the FDA and simply pass through the body undigested. The coating helps the fruit retain moisture, prevents shriveling, and protects against spoilage, extending its shelf life. Thoroughly washing produce is still recommended to remove dirt and residual pesticides.

Key Points

  • Wax is Edible: Food-grade waxes on apples are safe to eat and approved by health regulatory bodies like the FDA.

  • Indigestible Nature: The commercial wax coatings are not digested or absorbed by the human body and pass through harmlessly.

  • Protective Purpose: Applied wax extends shelf life by preventing moisture loss, protecting against microorganisms, and preserving crispness.

  • Natural vs. Commercial: An apple’s natural wax is removed during cleaning, with a new food-grade wax applied to restore the protective barrier.

  • Washing is Recommended: Always wash apples to remove surface dirt, bacteria, and residual pesticides, even though the wax itself is safe.

  • Nutrient-Rich Skin: Peeling the skin to remove wax also removes significant fiber and nutrients; washing is a better option.

  • Know Your Source: Common food-grade waxes include carnauba (plant-based) and shellac (insect-derived), which may be a consideration for vegans.

In This Article

The Science Behind Apple Wax

Apples develop a natural protective, waxy layer known as a "bloom" while growing, which prevents moisture loss and spoilage. However, this natural wax is removed during the cleaning process after harvest. To maintain freshness and extend shelf life, a thin layer of food-grade wax is applied commercially. This applied coating restores the protective barrier, helps the apple withstand transportation, and provides an appealing shiny appearance.

Is the Wax on Apples Safe to Eat?

The wax coatings used on apples are safe to eat, as confirmed by health and regulatory bodies like the U.S. Food and Drug Administration (FDA). These food-grade waxes are considered generally recognized as safe (GRAS) and are indigestible, passing through the human body without being absorbed.

What is Food-Grade Wax Made Of?

Food-grade waxes on apples typically come from natural sources or approved synthetic components. Common examples include:

  • Carnauba Wax: Derived from Brazilian palm trees, it provides a high-gloss finish.
  • Shellac: A resin from lac bugs, also used for a shiny finish (note its animal origin for vegans).
  • Beeswax: A natural wax from bees.
  • Paraffin Wax: Highly purified and FDA-approved petroleum-derived wax.

These waxes have a long history of safe use in the food industry and are approved globally.

Natural Wax vs. Commercial Coatings

Feature Natural Apple Wax Commercial Applied Wax
Source Produced naturally by the apple's skin during growth. Derived from natural sources (carnauba, shellac) or synthesized, then applied post-harvest.
Function Protects the fruit from dehydration, fungi, and insect damage while on the tree. Replaces the natural wax lost during washing; extends shelf life by retaining moisture.
Appearance Appears as a dull or powdery "bloom" on the surface of unwashed apples. Gives the fruit a glossy, polished, and shiny finish.
Application Develops naturally on the apple's skin. Applied via sprays or brushes in a very thin layer during the packing process.
Safety Harmless and fully edible. Deemed safe for human consumption by regulatory bodies like the FDA.

How to Properly Wash Apples

Despite the safety of the wax, washing apples is essential to remove dirt, bacteria, and potential pesticide residues. Washing can also help remove some of the wax, which some people prefer for texture.

Effective washing methods include:

  • Running Water Scrub: Use cool running water and a clean vegetable brush or cloth to scrub the surface.
  • Baking Soda Soak: Soak apples for about 15 minutes in lukewarm water with 1-2 teaspoons of baking soda, then scrub and rinse thoroughly. Baking soda may help remove pesticide residues.
  • Vinegar Soak: Soak apples briefly in a solution of three parts water to one part white vinegar, then scrub and rinse well to avoid an acidic taste.

Always dry apples after washing to further reduce surface bacteria.

Concerns and Considerations

  • Pesticide Residue: While washing helps, some worry wax traps pesticides. Proper cleaning is key for all produce.
  • Vegan Suitability: Shellac is insect-derived, so vegans may prefer unwaxed or organic apples or inquire about the wax type.
  • Taste/Texture: Rarely, excessive wax can cause a slight off-flavor or texture, but this is uncommon with modern application methods.
  • Nutrient Loss: Peeling removes wax but also beneficial fiber and vitamins in the skin. Washing is preferred for retaining nutrients.

Conclusion

In conclusion, the food-grade wax on apples is safe to eat. It is a standard, approved practice that replaces the apple's natural protective layer removed during cleaning, thus preserving quality and extending shelf life. Waxes like carnauba and shellac are indigestible and pass through the body harmlessly. While the wax is safe, always wash your apples thoroughly to remove surface contaminants. Washing ensures you can enjoy the nutritious apple skin confidently. The shine on an apple indicates its freshness and safety.

For more detailed information on apple coatings and their safety, refer to the USApple's backgrounder on apples and wax.

Frequently Asked Questions

The wax on commercially sold apples is typically made from food-grade sources, such as carnauba wax from palm leaves, shellac from lac bugs, or beeswax. These are certified safe by food safety authorities.

Yes, the wax an apple produces naturally is completely harmless and safe for consumption. This natural coating is removed during the washing process after harvest.

No, you cannot get sick from eating the food-grade wax on an apple. The wax is indigestible and passes through your body without being absorbed, posing no known health risks.

You can remove most of the wax by scrubbing the apple under lukewarm running water with a clean vegetable brush. A soak in a mixture of lukewarm water and baking soda can also be effective.

Yes, it is perfectly safe to eat apple skin with the food-grade wax coating. The skin is also packed with valuable nutrients and fiber, so eating it is often a healthier option than peeling it.

Wax is applied to apples to replace the natural coating lost during cleaning. This extends the fruit's shelf life by retaining moisture, preventing shriveling, protecting against mold, and making it more visually appealing.

Organic apples, by definition, do not have added wax derived from non-organic sources. Their duller appearance is due to the lack of a commercial gloss. However, they can still have a natural, powdery bloom.

References

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Medical Disclaimer

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