油脂精炼加工维生素E含量组成规律研究

Composition Law of Vitamin E Content in Oil Refining and Processing

大豆油精炼产生的脱臭馏出物是天然维生素E的良好来源,保障成品油品质的同时如何提高大豆油精炼副产物——脱臭馏出物中的维生素E含量是企业经济效益的关键影响因素。维生素E因精炼加工而损耗,但在工厂实际生产中其损耗规律尚不清楚。该研究首先测定了33批231个大豆原油、脱胶油、中和油、脱色油、脱臭油、脱臭馏出物中的维生素E含量,明确了维生素E含量组成随精炼加工的变化规律,维生素E在大豆原油中含量116.0 mg/100 g,经精炼降至81.3 mg/100 g,脱胶、中和引起了其含量的轻微下降,下降最显著发生在脱臭工段(维生素E含量降低28.0%)。接下来探明了脱臭馏出物(SODD1,SODD2)中维生素E含量,分别达到(14665.0±2587.3)、(4533.6±1643.3)mg/100g。进一步分析了δ、γ、α组成占比规律:原油—脱臭油3种异构体从2.2:6.7:1.0变为1.7:5.7:1.0,明确了精炼过程中维生素E含量降低比例分别达35.2%、28.3%、16.6%。最后结合其产地信息发现:美国豆中维生素E含量高于巴西豆,阿根廷豆最少。研究结果可为工厂精炼副产物经济效益提升提供参考。

The deodorized distillate produced by soybean oil refining is a good source of natural vitamin E.How to improve the vitamin E content in the by-products of soybean oil refining-deodorized distillate-while ensuring the quality of finished oil is a key influencing factor on the economic benefits of enterprises.Vitamin E is lost due to refining and processing,but the pattern of its loss in actual factory production is still unclear.This study first measured the vitamin E content in 33 batches of 231 soybean crude oil,degummed oil,neutralized oil,decolorized oil,deodorized oil,and deodorized distillates,clarifying the variation pattern of Vitamin E content and composition with refining processing.The content of vitamin E in soybean crude oil was 116.0 mg/100 g,which was refined and reduced by 81.3 mg/100 g.Degumming and neutralization caused a slight decrease in its content,with the most significant decrease occurring in the deodorization section(Vitamin E content decreased by 28.0%).Next,the vitamin E content in the deodorized distillates(SODD1,SODD2)was determined,reaching(14665.0±2587.3)mg/100 g and(4533.6±1643.3)mg/100 g,respectively.Further analysis was conducted onδ,γ,αcomposition proportion pattern:The three isomers of crude oil and deodorized oil changed from 2.2:6.7:1.0 to 1.7:5.7:1.0,and it was determined that the loss rate of vitamin E content during the refining process decreased by 35.2%,28.3%,and 16.6%,respectively.Finally,based on its origin information,it was found that the vitamin E content in American beans is higher than that in Brazilian beans,while Argentine beans have the least.The research results can provide reference for improving the economic benefits of refining by-products in factories.