She is being a bit too over cautious. Check the USDA database - it say that there is 5.75 grams glucose and 5.85 grams fructose per 100 grams or a difference of 0.10 grams. Most individuals can handle up to 0.5 grams of excess fructose without difficulties. If you check the original article (second reference in my signature) the authors say Foods and beverages containing > 0.5 g fructose in excess of glucose per 100 g and > 0.2 g of fructans per serve are considered at-risk of inducing symptoms. She has been known to be over cautious on a couple of fruits too. Also, you can add a small amount of glucose also called dextrose to offset the excess fructose. You can buy dextrose at most health food stores. 1/4 of a teaspoon weighs about 1 gram,
I am extremely excess fructose sensitive and I can handle 2 tablespoons of tomato paste with no difficulties.
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Re: tomato/passata/puree/ketchup.
Also, you can add a small amount of glucose also called dextrose to offset the excess fructose. You can buy dextrose at most health food stores. 1/4 of a teaspoon weighs about 1 gram,
