The methanolic extracts of cauliflower were also analyzed by HPLC and showed antioxidant activity for lutein and total carotenoids for fresh and processed samples. With respect to zeaxanthin, only fresh inflorescences or those processed by
microwaving or sous vide showed antioxidant compounds; fresh samples showed the highest antioxidants compounds. Finally, bcarotene and vitamin A from fresh, steamed and microwaved samples showed antioxidant activity. Fresh vegetables also showed higher antioxidant activity from these compounds. As for flavonoids,
the values were below the detection limit.