The term niacin is commonly used relative to the two
forms of vitamin B3, i.e. nicotinic acid and nicotinamide.
Tables 2 and 3 indicate that the highest concentrations
of this vitamin were detected in sesame seeds, sunflower
seeds, pumpkin seeds (up to 6.84 mg/100 g),
brown rice and wild rice (up to 5.54 mg/100 g) and in
barley, buckwheat and millet groats (up to 5.36 mg/
100 g). In the other examined products, the niacin content
was rather low.