Physico-chemical characters of Mustard oil

The research was carried out at NPIUB research laboratory, Dept. of Food Engineering, NPI university of Bangladesh, Manikgonj, Bangladesh, during June-July 2020. The quality of Mustard oils was analyzed by evaluating physicochemical properties such as density, moisture content, reflexive index, peroxide values, acid values and iodine values using standard methods.

In this study oils from selected mustard seeds investigated to determine the physicochemical properties like density, moisture content, reflexive index, saponification value (SV), peroxide value (PV), acid value (AV) and iodine value (IV). Highest density observed in (Red(Local)80%+Red(Hybrid)20%)- mustard oil (0.92 g/ml) and lowest in (Red(Local)75%+White(Local)25%)- mustard oil (0.91 g/ml). On the other hand, moisture content was observed in between 0.17% to 0.19% & (Red(Local)100%)- mustard oil (0.15%). It was observed that (Red(Local)75%+White(Local)25%)- mustard oil showed maximum (1.19 meq O2/kg) and (Red(Local)80%+Red(Hybrid)20%)- mustard oil showed minimum (1.18 meq O2/kg) peroxide values. Highest acid value was observed in (Red(Local)-100%) mustard oil (2.01 mg KOH/g) and lowest in (Red(Local)75%+White(Local)25%)- mustard oil (1.3 mg KOH/g). Highest iodine value was observed in (Red(Local)80%+Red(Hybrid)20%)- mustard oil (102.4 g I2/g oil) and lowest in (Red(Local)75%+White(Local)25%)- mustard oil (99.7 g I2/g oil). The results will help us for selecting a good quality of Mustard oil from the differences kind of Mustard seeds.