What does evidence suggest about the strength of roasted coffee 's antioxidant effects ?
In addition to the previously mentioned nutrients , strawberries contain the following vitamins in smaller but notable amounts : vitamin B1 , vitamin B2 , vitamin B3 , vitamin B6 , vitamin K , vitamin A , and vitamin E. One serving of about eight medium sized strawberries will provide 5 % of the daily potassium requirement and more than 20 % of the daily requirement of manganese ; this serving size of strawberries also qualifies as a good source of the following dietary minerals : iodine , magnesium , copper , iron , and phosphorus .