Antioxidant Activity of Northern and Northeastern Thai Foods Containing Indigenous Vegetables

Abstract

Antioxidant capacities were demonstrated between 13.25–86.00 mg vitamin C equivalent (VCE) per 100 g in 10 Northern foods and 4.63–176.71 mg VCE per 100 g in 10 Northeastern foods. The food that possessed the greatest antioxidant capacity was Sup ma khuea pro, and can be displayed from high to low as Kaeng phak seing da > Kaeng dok sa lae > Kaeng hed la ngok > Kaeng phak huan > Kaeng kae > Sup phak sa meg > Kaeng ka noon on > Kaeng dok ma rum> Kaeng pum > Kaeng naw mai bai ya nang> Lap tao > Sa yod ma kham > Kaeng sai bua > Kaeng phak seil > Kaeng om gai > Kaeng phak wan ban >Kaeng yhuak kluai > Kaeng dok phak plang > Pon pla krua ma noi. Total phenolic content in 100 g of Northern and Northeastern foods ranged from 48.42–225.70 and 15.63–157.62 mg gallic acid equivalent, respectively. Content of protein, fat, total dietary fiber and energy in 100 g were as follows; in Northern foods they ranged from 3.33–13.12, 0.55–3.02, 1.20–4.70 g and 24.67-96.65 Kcal, respectively. In Northeastern foods, protein, fat, total dietary fiber and energy varied from 1.69–5.05, 0.16–1.14, 0.90–3.50 g/100 g and 12.24–64.73 Kcal/100 g, respectively. Nutritionally, all 20 selected foods can be considered as low in fat and energy level.