Antioxidant question

[JT415]

I'm new at winemaking and I was looking over some future recipes I want to make. I've noticed some of the recipes in the book that came with my 1 gallon kit, call for an antioxidant at bottling. Is that different from the potassium sorbate stabilizer?
Thanks

 

[Blacksmith1]

I believe that potassium metabisulfate is an antioxidant. It is commonly used at bottling along with the sorbate. However @RPh_Guy can answer this better than I.

 

[RPh_Guy]

Is that different from the potassium sorbate stabilizer?

Yes.

Sorbate inhibits yeast replication.

Sulfite (e.g. potassium metabisulfite) is an anti-oxidant and anti-microbial. It's should always be used whenever adding sorbate.