Nozigul, Kiyomova, and Muminov Beknazar. “Effects Of Different Food Contaminants On The Activity Of Digestive Enzymes”. The American Journal of Applied Sciences 3, no. 02 (February 28, 2021): 138–142. Accessed August 8, 2025. https://theamericanjournals.com/index.php/tajas/article/view/824.