Keeping Green Beans Green Hack

[u/TheMrsH1124]

Is there any reason why using a bit of zinc gluconate to keep green beans green wouldn't be safe?

It's about 300 mg powder which is maybe at best a half teaspoon? I think probably a lot less. No other added ingredients.

I can't see why this wouldn't be safe as the zinc gluconate is in and of itself completely shelf stable and the amount added would not affect the density of the solution.

Thanks!

[u/Pretend-Panda]

I am not a chemist or a food scientist, so I have a question.

Will the zinc gluconate affect the pH?