Can I eat the lemons after I have used them as a battery?

After completing the lemon battery experiment, can I eat the lemons when I'm done?


More broadly, what will happen to the lemons? What are the chemical reactions, what chemicals might be present/missing after running my lemons as a zinc/copper battery? Would it be poisonous, or just unpleasant?




In a lemon battery, the zinc from the galvanized nail is giving up electrons and transitioning into an aqueous state:


$$\ce{Zn → Zn^2+ + 2e−}$$ 


While zinc is entering the electrolyte, two positively charged hydrogen ions ($\ce{H+}$) from the citric acid with two electrons at the copper electrode's surface and form an uncharged hydrogen molecule $\ce{H2}$:


$$\ce{2H+ + 2e− → H2}$$


While zinc is a mineral our bodies need, I wouldn't recommend using this as a source of zinc. Also, [zinc toxicity](https://en.wikipedia.org/wiki/Zinc_toxicity) is a thing, so without knowing the dose you're taking, you risk poisoning yourself. 




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[Lemon Battery Wikipedia](https://en.wikipedia.org/wiki/Lemon_battery)


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