Ayudia, Irine, and Mutiara Ulfah. “Evaluation of the Chemical Quality of Palm Cooking Oil Resulting from Repeated Use by Pecel Lele Vendors in Buduran District, Sidoarjo”. Food Scientia: Journal of Food Science and Technology, vol. 5, no. 2, Dec. 2025, pp. 111-22, doi:10.33830/fsj.v5i2.14535.2025.