PHENOLIC COMPOUND PRODUCTION FROM LIQUID SMOKE AND ITS POTENCY TO INHIBIT LINOLEIC ACID OXIDATION

Liquid smoke, which has antioxidant activity, needs to be distillated for reducing benzo[α]pyren and tar. Modification of the liquid smoke distillation equipment by three stage condenser have been conducted to prevent carry over of benzo[α]pyren and tar during the process. Modification of the equipment will influence the characteristic of liquid smoke distillate produced at each condenser. Hence, these research objectives are investigating the rate of phenolic compound production during the process, and examining its potency to inhibit the linoleic acid oxidation. Distillation was conducted by separating the distillate per 10 minute during the process. The distillate was produced from four stage, i.e. pre-condensation stage, 1st stage, 2nd stage, and 3rd stage. The results showed that each condenser produced phenolic compound on different rate. The 1st stage condenser produced phenolic compound with high rate, but the most potential as antioxidant was showed by pre-condensation fraction. The distillates exhibited antioxidant activity tested under linoleic acid; however, the activity was less than BHA on the same concentration.