The experiment was performed at antioxidants of BHA, BHT and TBHQ added separately, and combined with each other. And the synergies of citric acid were taken into account. The extending the shelf life of sunflower seeds were obtained. The experimental results showed that the best antioxidant effect was a single adding of TBHQ, along with the increasing concentration of TBHQ, the effect of antioxidant don't have obvious difference, the concentration of 0.04% (by weight of water) was more appropriate. Secondly, the combination of TBHQ and BHT,...