期刊论文

Effects of Heat Treatment on the Ultraviolet Spectra of Rapeseed Oil During the Refining

Liu, Y.

中文

中国粮油学报

1003-0174

2018

33

6

45-50

10.3969/j.issn.1003-0174.2018.06.009

公益性行业（农业）科研专项经费课题（201303072）；

本校为第一且通讯机构

考察各阶段精炼热处理对菜籽油紫外光谱的影响,为油脂精炼危害物的形成风险探索快速评估方案。采用0.05 mm光程薄膜样品池采集菜籽油的紫外吸收光谱并提取D245和R272两个参数,分别用以表征油中二元和三元共轭结构的多寡,进而评估精炼危害物的形成风险。结果表明,脱胶、脱酸、脱色操作热处理均可导致油中二元和三元共轭结构缓慢累积;而在脱臭操作中,油中二元和三元共轭结构的累积速率分别可达之前3个操作的11倍和33倍以上。二元和三元共轭结构的累积与精炼热处理程度及异构、聚合产物生成具有密切关联,因此D245和R272两个参数可用作精炼危害物的快速定量评估指标。

To achieve the efficient risk assessment of hazardous substances formation during oil refining process, the effects of heat treatment on ultraviolet (UV) spectra of Rapeseed Oil (RO) were investigated. A thin-film sample chamber with optical length of 0.05 mm was used to collect the UV spectra of refined RO samples and parameters of D 245 and R 272 were selected to characterize the accumulation of di-and tri- conjugated products in RO, respectively, thus to evaluate the risk of hazardous substances formation. The results showed that di- and tri...