Antioxidants yog cov khoom uas tuaj yeem tiv thaiv lossis ncua oxidation. Txij li cov khoom xyaw hauv cov tshuaj pleev ib ce yog cov roj, lawv cov nyiaj tsis txaus ntseeg tau yooj yim oxidized thiab ua rancid; Yog li ntawd, antioxidants yog tsim nyog. Antioxidants muaj ob txoj haujlwm: ua ntej, lawv tiv thaiv tau yooj yim rancid tshuaj los ntawm absorbing oxygen; thib ob, lawv tus kheej yog oxidized, yog li tiv thaiv oxidation ntawm cov roj. Ib qho tshuaj antioxidant zoo tshaj plaws yuav tsum muaj kev nyab xeeb thiab tsis yog - tshuaj lom, muaj kev ruaj ntseg zoo, kev sib raug zoo nrog lwm cov khoom xyaw, thiab muab cov tshuaj antioxidant muaj zog ntawm cov tshuaj tsawg.
Raws li lawv cov qauv tshuaj, cov tshuaj antioxidants hauv cov tshuaj pleev ib ce tuaj yeem muab faib ua tsib pawg: phenols, amines, organic acids, cawv, inorganic acids, thiab lawv cov ntsev. Feem ntau siv cov tshuaj antioxidants suav nrog tocopherol (vitamin E), butylated hydroxyanisole (BHA), thiab butylated hydroxytoluene (BHT).
