发明名称 一种利用化学计量法定性检测植物油中掺伪油脂的方法
摘要 本发明公开了一种利用化学计量法定性检测植物油中掺伪油脂的方法,包括如下步骤:气相色谱数据获取,使用判别分析和聚类分析对植物油中所掺入的油脂种类进行鉴别。建立了13个判别分析模型,待侧样品检测省去了与标准植物油图谱比对及脂肪酸含量比对等步骤,直接将其脂肪酸比例代入即可鉴定掺伪植物油种类,可实现米糠油中掺棕榈油、菜籽油、棉籽油、大豆油、茶籽油、花生油的鉴定,检测准确率96%以上。米糠油掺棕榈油、菜籽油、棉籽油、大豆油的聚类分析能鉴别掺伪9%以上的棕榈油、掺伪2%以上的菜籽油、掺伪5%以上的棉籽油、掺伪16%以上的大豆油。
申请公布号 CN103969380A 申请公布日期 2014.08.06
申请号 CN201410215972.2 申请日期 2014.05.21
申请人 湖南生物机电职业技术学院 发明人 喻凤香
分类号 G01N30/86(2006.01)I 主分类号 G01N30/86(2006.01)I
代理机构 长沙正奇专利事务所有限责任公司 43113 代理人 郭立中
主权项 一种利用化学计量法定性检测植物油中掺伪油脂的方法,其特征在于,所述方法包括如下步骤:(1)采用气相色谱法测定待测植物油中各脂肪酸的含量;(2)将待测植物油的脂肪酸含量代入以下13个计算模型中,计算Y1至Y13的数值结果:Y1=949.821×C<sub>10:0</sub>+143.946×C<sub>14:0</sub>+89.515×C<sub>16:0</sub>+181.532×C<sub>16:1</sub>+359.968×C<sub>17:0</sub>+107.006×C<sub>18:0</sub>+101.592×C<sub>18:1</sub>+105.504×C<sub>18:2</sub>+93.738×C<sub>18:3</sub>+133.945×C<sub>20:0</sub>+140.364×C<sub>20:1</sub>+73.022×C<sub>22:0</sub>+55.167×C<sub>22:1</sub>‑5031.548;Y2=1438.311×C<sub>10:0</sub>+139.412×C<sub>14:0</sub>+91.792×C<sub>16:0</sub>+185.061×C<sub>16:1</sub>+361.166×C<sub>17:0</sub>+111.856×C<sub>18:0</sub>+100.457×C<sub>18:1</sub>+103.234×C<sub>18:2</sub>+94.770×C<sub>18:3</sub>+131.944×C<sub>20:0</sub>+138.912×C<sub>20:1</sub>+77.803×C<sub>22:0</sub>+55.222×C<sub>22:1</sub>‑5049.374;Y3=833.672×C<sub>10:0</sub>+134.870×C<sub>14:0</sub>+85.436×C<sub>16:0</sub>+172.626×C<sub>16:1</sub>+637.630×C<sub>17:0</sub>+98.978×C<sub>1</sub><sub>8:0</sub>+96.660×C<sub>18:1</sub>+98.821×C<sub>18:2</sub>+93.030×C<sub>18:3</sub>+144.994×C<sub>20:0</sub>+144.031×C<sub>20:1</sub>+66.448×C<sub>22:0</sub>+61.036×C<sub>22:1</sub>‑4682.546;Y4=896.353×C<sub>10:0</sub>+128.253×C<sub>14:0</sub>+84.320×C<sub>16:0</sub>+162.165×C<sub>16:1</sub>+384.505×C<sub>17:0</sub>+118.244×C<sub>18:0</sub>+101.018×C<sub>18:1</sub>+101.485×C<sub>18:2</sub>+89.035×C<sub>18:3</sub>+128.214×C<sub>20:0</sub>+136.708×C<sub>20:1</sub>+65.445×C<sub>22:0</sub>+50.248×C<sub>22:1</sub>‑4852.422;Y5=928.799×C<sub>10:0</sub>+152.520×C14:0+90.314×C<sub>16:0</sub>+189.679×C<sub>16:1</sub>+388.121×C<sub>17:0</sub>+114.050×C<sub>18:0</sub>+100.355×C<sub>18:1</sub>+106.986×C<sub>18:2</sub>+88.392×C<sub>18:3</sub>+122.661×C<sub>20:0</sub>+138.219×C<sub>20</sub>:<sub>1</sub>+71.585×C<sub>22:0</sub>+57.269×C<sub>22:1</sub>‑5088.379;Y6=910.200×C<sub>10:0</sub>+139.206×C<sub>14:0</sub>+89.538×C<sub>16:0</sub>+179.837×C<sub>16:1</sub>+377.844×C<sub>17:0</sub>+110.874×C<sub>18:0</sub>+101.812×C<sub>18:1</sub>+105.471×C<sub>18:2</sub>+91.924×C<sub>18:3</sub>+123.842×C<sub>20:0</sub>+145.055×C<sub>20:1</sub>+128.863×C<sub>22:0</sub>+52.648×C<sub>22:1</sub>‑5159.902;Y7=1040.664×C<sub>10:0</sub>+138.386×C<sub>14:0</sub>+89.206×C<sub>16:0</sub>+176.115×C<sub>16:1</sub>+446.255×C<sub>17:0</sub>+118.737×C<sub>18:0</sub>+101.533×C<sub>18:1</sub>+106.535×C<sub>18:2</sub>+104.723×C<sub>18:3</sub>+126.953×C<sub>20:0</sub>+137.938×C<sub>20:1</sub>+75.991×C<sub>22:</sub><sub>0</sub>+54.122×C<sub>22:1</sub>‑5174.614;Y8=1332.938×C<sub>10:0</sub>+141.742×C<sub>14:0</sub>+90.311×C<sub>16:0</sub>+180.668×C<sub>16:1</sub>+362.246×C<sub>17:0</sub>+111.429×C<sub>18:0</sub>+101.825×C<sub>18:1</sub>+105.543×C<sub>18:2</sub>+93.779×C<sub>18:3</sub>+134.566×C<sub>20:0</sub>+141.212×C<sub>20:1</sub>+72.544×C<sub>22:0</sub>+55.215×C<sub>22:1</sub>‑5089.915;Y9=900.173×C<sub>10:0</sub>+138.162×C<sub>14:0</sub>+87.246×C<sub>16:0</sub>+175.240×C<sub>16:1</sub>+487.459×C<sub>17:0</sub>+102.642×C<sub>18:0</sub>+99.064×C<sub>18:1</sub>+101.769×C<sub>18:2</sub>+94.465×C<sub>18:3</sub>+143.622×C<sub>20:0</sub>+147.800×C<sub>20:1</sub>+68.062×C<sub>22:0</sub>+56.071×C<sub>22:1</sub>‑4816.328;Y10=900.399×C<sub>10:0</sub>+136.828×C<sub>14:0</sub>+88.591×C<sub>16:0</sub>+177.154×C<sub>16:1</sub>+382.924×C<sub>17:0</sub>+113.400×C<sub>18:0</sub>+103.289×C<sub>18:1</sub>+104.908×C<sub>18:2</sub>+93.751×C<sub>18:3</sub>+131.177×C<sub>20:0</sub>+141.241×C<sub>20:1</sub>+73.050×C<sub>22:0</sub>+53.048×C<sub>22:1</sub>‑5100.582;Y11=934.574×C<sub>10:0</sub>+148.182×C<sub>14:0</sub>+90.524×C<sub>16:0</sub>+186.865×C<sub>16:1</sub>+374.092×C<sub>17:0</sub>+111.813×C<sub>18:0</sub>+101.489×C<sub>18:1</sub>+106.812×C<sub>18:2</sub>+91.637×C<sub>18:3</sub>+128.999×C<sub>20:0</sub>+140.408×C<sub>20:1</sub>+72.549×C<sub>22:0</sub>+56.431×C<sub>22:1</sub>‑5107.566;Y12=918.758×C<sub>10:0</sub>+140.704×C<sub>14:0</sub>+90.251×C<sub>16:0</sub>+181.331×C<sub>16:1</sub>+373.097×C<sub>17:0</sub>+112.340×C<sub>18:0</sub>+102.454×C<sub>18:1</sub>+106.129×C<sub>18:2</sub>+93.098×C<sub>18:3</sub>+135.285×C<sub>20:0</sub>+145.736×C<sub>20:1</sub>+99.281×C<sub>22:0</sub>+53.892×C<sub>22:1</sub>‑5147.272;Y13=949.965×C<sub>10:0</sub>+139.427×C<sub>14:0</sub>+90.171×C<sub>16:0</sub>+180.058×C<sub>16:1</sub>+454.214×C<sub>17:0</sub>+117.458×C<sub>18:0</sub>+102.039×C<sub>18:1</sub>+106.534×C<sub>18:2</sub>+100.227×C<sub>18:3</sub>+126.549×C<sub>20:0</sub>+140.273×C<sub>20:1</sub>+76.189×C<sub>22:</sub><sub>0</sub>+54.286×C<sub>22:1</sub>‑5154.243;其中,Y1表示米糠油,Y2表示棕榈油,Y3表示菜籽油,Y4表示茶籽油,Y5表示棉籽油,Y6表示花生油,Y7表示大豆油,Y8表示掺混棕榈油的米糠油,Y9表示掺混菜籽油的米糠油,Y10表示掺混茶籽油的米糠油,Y11表示掺混棉籽油的米糠油,Y12表示掺混花生油的米糠油,Y13表示掺混大豆油的米糠油;若待测植物油的Y1至Y13中Y1的数值最大,则该植物油为米糠油;若Y2最大,则该植物油为棕榈油;若Y3最大,则该植物油为菜籽油;若Y4最大,则该植物油为茶籽油;若Y5最大,则该植物油为棉籽油;若Y6最大,则该植物油为花生油,若Y7最大,则该植物油为大豆油;若Y8最大,则该植物油为掺混棕榈油的米糠油;若Y9最大,则该植物油为掺混菜籽油的米糠油;若Y10最大,则该植物油为掺混茶籽油的米糠油;若Y11最大,则该植物油为掺混棉籽油的米糠油;若Y12最大,则该植物油为掺混花生油的米糠油;若Y13最大,则该植物油为掺混大豆油的米糠油。
地址 410126 湖南省长沙市芙蓉区隆平高科技园湖南生物机电职业技术学院