摘要
为完善米糠油掺伪的定量检测系统,采用恒温毛细管气相色谱法建立了米糠油指纹图谱,对米糠油进行模拟掺伪,建立了米糠油中廉价油脂掺伪量与特征脂肪酸含量的一元线性模型。结果表明:掺伪棕榈油最佳线性模型为YC16∶0=16.719X+18.722(R2=0.993 7);掺伪菜籽油最佳线性模型为YC22∶1=0.158 2X+0.350 7(R2=0.991 0),菜籽油掺伪量2%以上适用;掺伪棉籽油最佳线性模型为YC14∶0=0.004X+0.316 8(R2=0.981 3),棉籽油掺伪量17%以上适用;掺伪大豆油最佳线性模型为YC18∶3=0.090 6X+2.456 4(R2=0.992 5),大豆油掺伪量24%以上适用。
The fingerprint of rice bran oil was constructed by constant temperature capillary gas chromatography so as to improve the quantitative detection system of adulterated rice bran oil. The linear model of the adulteration amount of low- cost oil in rice bran oil and characteristic fatty acid content was built by simulate adulteration of rice bran oil. The results showed that the optimal quantitative detection model of rice bran oil adulterated with palm oil was YC16∶ 0= 16. 719 X ＋ 18. 722（ R2= 0. 993 7）; the optimal quantitative detection model of rice bran oil adulterated with rapeseed oil was YC22∶ 1= 0. 158 2X ＋0. 350 7（ R2= 0. 991 0）,suitable for the adulteration amount more than 2%; the optimal quantitative detection model of rice bran oil adulterated with cottonseed oil was YC14∶ 0= 0. 004 X ＋ 0. 316 8（ R2=0. 981 3）,suitable for the adulteration amount over 17%; the optimal quantitative detection model of rice bran oil adulterated with soybean oil was YC18∶ 3= 0. 090 6X ＋ 2. 456 4（ R2= 0. 992 5）,suitable for the adulteration amount above 24%.
出处
《中国油脂》
CAS
CSCD
北大核心
2015年第2期61-65,共5页
China Oils and Fats
基金
国家"十二五"科技支撑计划(2012BAD34B02)
湖南省科技厅农业支撑计划(2014NK3058)
湖南省教育厅基金(13C518)
湖南省社科院基金(2013ZZ101)
关键词
米糠油
指纹图谱
线性模型
特征脂肪酸
掺伪
rice bran oil
fingerprint
linear model
characteristic fatty acid
adulteration
作者简介
喻凤香（1981），女，副教授，博士，研究方向为食品加工与检测（E—mail）yufeng-xian_1@163．com；
