Is it true that the highest concentrations of citrulline are found in walnut seedlings ?
From the link: Citrulline in foods Citrulline is found in high concentrations in watermelon rind and flesh. Citrulline is also present in other curcubits, like cucumbers and cantaloupe, at very low levels, and in the milk protein casein. The highest concentrations of citrulline are found in walnut seedlings. Further info on Citrulline Citrulline is alpha amino gamma ureidovaleric acid. It is formed from ornithine and takes part in the synthesis of urea. It donates one of its nitrogen for the synthesis of urea. Arginine is synthesized from citrulline in presence of aspartic acid, ATP and Mg ++ Citrulline is found in high concentration in the liver. Citrulline is not a component of any major proteins or enzymes. In the mitochondria, the ‘power house’ of cells, ammonia combines with carbon dioxide and ornithine to form citrulline. Citrulline is then transported out of the mitochondria into the cytoplasm where it is then converted to yet another amino acid called arginine. Thus citrulline
