Are there any antioxidants in seeds?

Yes...: Muscadine grape seeds; sesame seeds, are potent sources of anti-oxidants. Ask your doctor(or the local health food store) for more information.

Many: Seeds tend to be very rich in antioxidants. Among the healthiest seeds are pumpkin seeds (see http://whfoods.com/genpage.php?tname=foodspice&dbid=82),grape seeds (https://tinyurl.com/y9j2w2jx) sunflower (http://whfoods.com/genpage.php?tname=foodspice&dbid=57), and cumin seeds, which have been touted for a wide variety of health benefits: https://draxe.com/black-seed-oil-benefits/