【摘要】：采用氣相色譜-質(zhì)譜聯(lián)用(GC-MS)方法測(cè)定了8種云南植物油脂肪酸含量并對(duì)其差異性進(jìn)行了分析。植物油經(jīng)甲酯化處理后,用GC-MS方法測(cè)定其脂肪酸含量。通過(guò)與標(biāo)準(zhǔn)樣品保留時(shí)間比較和檢索NIST標(biāo)準(zhǔn)譜庫(kù)定性,峰面積歸一化法定量。山茶油和辣木籽油含油酸(C18:1)較高,油酸含量分別為80.47%和71.90%;核桃油和假酸漿籽油含亞油酸(C_(18:2))較高,含量分別為60.75%和70.78%;香薷油和藿香籽油含α-亞麻酸(C_(18:3))較高,含量分別為47.13%和55.08%。橡膠樹(shù)籽油中硬脂酸(C_(18:0))含量9.22%,油酸(C_(18:1))24.07%,亞油酸(C_(18:2))37.17%,α-亞麻酸(C18:3)19.72%,幾種脂肪酸分布較為均勻。藿香籽油中不飽和脂肪酸(UFA)含量最高為93.75%。辣木籽油飽和脂肪酸(SFA)含量最高為23.29%;辣木籽油中花生酸(C_(20:0))、二十碳烯酸(C_(20:1))、榆樹(shù)酸(C_(22:0))和木蠟酸(C_(24:0))含量分別為3.94%、2.73%、6.41%和1.10%,均遠(yuǎn)遠(yuǎn)高于其他7種植物油相對(duì)應(yīng)的脂肪酸含量,可作為鑒定辣木籽油的重要依據(jù)。
[Abstract]:The fatty acid contents of eight Yunnan vegetable oils were determined by gas chromatography-mass spectrometry (GC-MS) and their differences were analyzed. The fatty acid content of vegetable oil was determined by GC-MS after methyl esterification. By comparing with the retention time of the standard sample and searching the NIST standard spectrum database qualitatively, the peak area normalization method is used to quantify the standard spectral database. Camellia oleifera oil and horseradish seed oil contained higher oleic acid (C 18 鈮，

本文編號(hào)：2493626