Protective effect of fresh and processed Jalapeño and Serrano peppers against food lipid and human LDL cholesterol oxidation

► Fresh and processed hot pepper extracts protected lipids from oxidation. ► Lipids were protected against oxidation in food related systems and human LDL. ► Chipotle pepper (smoked Jalapeño) showed high protective effect. ► Extracts were rich in phenolic compounds, and contained other phytochemicals.