USING ETHANOL AS A SOLVENT DURING THE PRETREATMENT PHASE TO EXTRACT RICE BRAN OIL
Từ khóa
Tóm tắt
This research was conducted to determine the alcohol concentration, alcohol immersion time and the ratio of raw materials /solvent to separate the highest amount of wax in rice bran before extracting rice bran oil. The treated rice bran was two processes. Process 1: rice bran - steamed - pickled ethanol - dry - extracted with hexane. Process 2: rice bran - pickled ethanol - dry - extracted with hexane. The treated rice bran was pickled ethanol in different ethanol 96, 90, 80, 70, 60, 50 and 40 respectively with raw materials/ solvent ratio of 1:5 (w/v). Rice bran was investigated for soaking time 15 minutes, 30 minutes, 1 hour, 2 hours, 3 hours respectively. After that, To select the appropriate alcohol content and soaking time were to investigate the ratio of raw materials/solvent 1:1 (w/v), 1:2 (w/v), 1:3 (w/v), 1:4 (w/v), 1:5 (w/v), 1:6 (w/v) and 1:7 (w/v) respectively. The results showed that the best soaking time to separate wax in rice bran was 3 hours with the ratio of raw materials/solvent 1:6 (w/v).
