1. 3M (2008). 3M shortening monitor brochures. www.3M.com/foodservice. (Last accessed: February 2008).
2. 3M PCT 120 oil testers (2022). http://solutions.3m.com. (Accessed Feb 2022).
3. Official methods and recommended practices of the american oil chemists’ society,1993
4. AOCS (2009). https://lipidlibrary.aocs.org/chemistry/physics/frying-oils/formation-of-new-compounds-during-frying-general-observations (Accessed Oct 2022).
5. Survey of quality of used frying oils from restaurants;Al-Kahtani;Journal of the American Oil Chemists Society,1991