抗酸 こうさん 物質 ぶっしつでしょう
kōsanka busshitsudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 抗酸化物質

1. Probably an antioxidant.; It will likely be an antioxidant.

Polite
Presumptive
Conjecture