My heinz ketchup has 0% vitamin c. My prego spaghetti sauce has 4% and my tomato soup has 10%. Why are these numbers so low? What do they do to the tomatoes that make them loose vitamin c content?
The numbers are calculated as percentages of a person’s daily requirement of vitamin C. The usual serving size of ketchup would be too small to register.
0% is of the daily FDA recommended amount. (RDV - Recommended Daily Value?)
As you only use a Tablespoon or so of catsup at t time, you’re not getting much % wise.
Spaghetti sauce and tomato soup are a larger serving.
If they were showing it in mg (milligrams) you’d see that it’s present, but not a lot in your particular serving.
Is it 0% content, or 0% recommended daily requirement? You eat a lot less ketchup in one go than you do sauce or soup.
Ketchup does typically contain quite a reasonable amount of vitamin C, weight for weight – say, about 15mg, which is 25% of the UK RDA, per 100 grams. But as others have pointed out, you’re not likely to eat enough of it in one sitting for it to be a significant ‘source’ (heh).
Better watch it! You might get scurvy if all you eat is that spaghetti!