1000 µg = 1 mg = 0.001 g

apple 500 g**
protein 2 g
protein quality 11 %
fat 3 g
linolenic acid 230 mg
carbs 57 g
vitamin E activity 2 mg
vitamin B1 175 µg
vitamin B2 160 µg
vitamin B3 2 mg
vitamin B5 500 µg
vitamin B6 500 µg
biotin 22 µg
folic acid 60 µg
vitamin C 60 mg
calcium 35 mg
magnesium 32 mg
iron 2 mg
zinc 500 µg
potassium 700 µg
vanadium 17 µg


** Souci, Fachmann, Kraut;
Food Composition And Nutrition Tables
Medpharm Scientific Publishers Stuttgart