Abstract: The disclosure relates to a process and composition for determining the quantity of a vitamin added to a foodstuff such as a beverage. The process involves (a) combining a predetermined amount of a chemical marker with a composition which is a carrier in combination with a predetermined amount of a vitamin to obtain a vitamin composition; (b) adding the vitamin composition to a foodstuff to obtain a vitamin fortified beverage; (c) quantitatively determining the amount of the chemical marker in the vitamin fortified foodstuff; and (d) correlating the quantitatively determined amount of the chemical marker in the vitamin fortified foodstuff with the predetermined amount of vitamin in the vitamin composition.

Abstract: Process, apparatus and composition for calcium fortification of beverages are provided. The methods comprise continuously blending in water a calcium source, preferably calcium hydroxide, and an acid source for a time sufficient to produce soluble calcium salts, but with minimal precipitation. The acid source is preferably citric acid. The calcium salt solution remains in an in-line retaining reaction hold tube for the necessary period to produce calcium salt in solution without significant precipitation, and is then continuously and immediately added to a non-dairy beverage, such as orange juice, to calcium fortify the beverage. The pH of the calcium salt solution can be monitored to optimize the amount of soluble salt and minimize the amount of precipitate.