Glyoxal, a toxic chemical formed when oil is heated, is most common in oils like lard and palm oil because they contain myristic acid and oleic acid.
Scientific Claim
The formation of glyoxal (GO) is strongly associated with myristic acid, and its levels are highest in oils rich in oleic acid and stearic acid, such as lard and palm oil.
Original Statement
“Results from heat map analysis indicated that the 2,4-heptadienal, and glyoxal related to the myristic acid of oil... the contents of GO and MGO were the highest in OA-rich oils (LO, PO).”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
Correlation and heat map data support the association. 'Is associated with' correctly reflects the statistical link without implying biological causation.
More Accurate Statement
“Glyoxal (GO) formation during thermal processing is associated with myristic acid and is highest in oils rich in oleic acid and stearic acid, such as lard and palm oil.”
Evidence from Studies
Supporting (0)
Contradicting (1)
Impact of Heating Temperature and Fatty Acid Type on the Formation of Lipid Oxidation Products During Thermal Processing
The study found that oils with lots of polyunsaturated fats (like soybean oil) made more harmful compounds when heated, not oils like lard or palm oil — so the claim that glyoxal is highest in lard and palm oil isn’t supported.