Murthy, Nirmala K. 1976. “Toxicological Evaluation of Some Food Colours, Enzymes, Flavour Enhancers, Thickening Agents and Certain Food Additives”. The Indian Journal of Nutrition and Dietetics 13 (11):389-89. https://www.informaticsjournals.com/index.php/ijnd/article/view/11689.