转基因大豆油质量评价

Quality evaluation of transgenic soybean oil

通过滴定分析法测定转基因大豆油的酸值及过氧化值。结果显示,其与非转基因大豆油无显著差异,依据实质等同性原则,说明基因的改性不会影响大豆油的加工及储藏,从而引起质量的变化。通过ICP-MS测定大豆油的微量金属元素,研究发现转基因大豆油中Co含量为2253~3156 ng/g,Mo含量为112~127 ng/g,Fe含量为33898~58612 ng/g,明显低于普通非转基因大豆油。微量金属元素的聚类分析表明,转基因大豆油与普通大豆明显分成2类,主成分分析显示非转基因大豆油脂成分相近,而转基因大豆油脂成分较为分散。

Compare to transgenic soybean oil and normal soybean oil, the acid values and peroxide values were not different significantly, which were determined by titrimetric analysis. According to the principles of substantial equivalence, it indicated that the processing and storage of soybean oil were not affected by modification of genes. Trace metal elements were determined by ICP-MS. Several elements in transgenic soybean oil were lower than nontransgenic ones, 2253~3156 ng/g for Co, 112~127 ng/g for Mo, 33898~58612 ng/g for Fe. Hierarchical clustering analysis(HCA) was applied for analyzing the trace metal elements in transgenic soybean oil which were grouped into cluster. And principal component analysis(PCA) of components in oils showed that nontransgenic soybean oils were closely cluster together, otherwise the transgenic ones were disperse.