Micelle Size Analysis
A dynamic light scattering instrument (Brookhaven NanoBrook 90Plus Zeta instrument, USA) was used to monitor the micelle size changes in the oil sample during lipid peroxidation (Budilarto and Kamal‐Eldin, 2015b). The micelle size distribution graph of the oil sample (2 mL) (intensity, %, versus diameter, nm) was determined at the angle of 90° at 25 °C. The refractive index and viscosity of soybean oil were 1.418 ± 0.01 and 0.047 ± 0.001 Pa s, respectively.