不同精炼程度油茶籽油储藏品质变化研究

Different Refined Degree on Quality Changes of Camellia Seed Oil During Storage

为了阐明不同精炼程度油茶籽油在储藏条件下的品质变化规律并为油茶籽油储藏技术提供参考依据,采用同一批油茶籽压榨制取4种不同精炼程度油茶籽油,研究了储藏期间油样的质量安全指标与生理活性物质的变化规律。结果表明:在整个储藏期间,毛油酸值上升最快,上升了29.85%;碱炼油的酸值和过氧化值上升最慢,分别上升了3.48%和5.97%,适度精炼油中油酸和亚油酸等不饱和脂肪酸的保存最好,且更有利于VE以及角鲨烯的保持。精炼油生理活性物质中VE和角鲨烯在储藏期间损失较多。从生理活性物质来看,适度精炼更有优势。在采用较好油茶籽油原料的基础上,通过适度精炼来保证油茶籽油储藏过程中的品质是可行的。

In order to clarify the refined different degrees on qualities changes of camellia seed oil during storage and provide reference for the storage technology,the research has selected four refined different degrees camellia seed oils from one batch. The oils have been applied to research the variations of quality,the safety of indicators and physiologically active substances during storage. The results showed that the crude oil acid value increased by29. 85% which was the fastest growth speed. The alkaline oil had the slowest growth speed of acid value and peroxide value,with increasing by 3. 48% and 5. 97% respectively. The moderate refined degree helped to presence oleic and linoleic acids,VE and squalene. The VE and squalene of refined oil physiological activator were lost during storage.By comparison,there were more physiologically active substances in moderate refined oil. As a result,based on the good raw materials,moderate refining was feasible to ensure the quality during storage.