Estimation of oxalate concentration levels in the tomato crop and its impact on the Iraqi consumer

Abstract

Most of Iraqi consumers are depending , almost throughout the year , on Tomato Crops
as a main and daily food . A gravimetric analysis was used on fresh Tomato Juice to evaluate the
effects of the oxalic acid (H2C2O4) or the soluble oxalate (C2O4) in Tomato Juice on Iraqi
consumer health . The results show that the minimum recorded concentration for oxalic acid
(H2C2O4) was in January 2006 , while the highest recorded concentration for oxalic acid
(H2C2O4) in fresh Tomato Juice was in May 2006 . Curves have been drawn for each month
between weight of the precipitate of calcium oxalate (CaC2O4.H2O) per 100 grams solution
versus the calculated percentage of oxalate (C2O4) . Curves have also been drawn for each month
between the tested weight of solid pure of oxalic acid (H2C2O4) versus weight of the precipitate
of calcium oxalate (CaC2O4.H2O) per 100 grams solution .