| Abstract:The changes of the total and the individual tocopherol content during refining were studied by analyzing soybean oil product from 21 domestic large-scale oil refineries,the relationships among the tower equipment,deodorization conditions and tocopherol loss rate were mailly inspected.The results showed that under the existing refining conditions,the total tocohperol losses did not exceed 33%,and the relative ratios of monomer tocopherol()were almost constant during processing steps.The tocopherol retention was largely determined by tower structure,deodorization temperature and sparging steam. |
