| 杜蘅,胡毓元,盖争艳,郭怡雯,郭涛.低场核磁共振技术对葡萄籽油掺伪鉴别的研究[J].中国粮油学报,2019,34(3):106-110 |
| 低场核磁共振技术对葡萄籽油掺伪鉴别的研究 |
| The Distinguishing Study of Adulterated Grape Seed Oil by LF-NMR |
| 投稿时间：2018-06-04 修订日期：2018-11-26 |
| DOI： |
| 中文关键词: 低场核磁共振（LF-NMR） 主成分分析（PCA） 葡萄籽油 掺伪 |
| 英文关键词:low field nuclear magnetic resonance principal component analysis grape seed oil adulteration |
| 基金项目:利用低场核磁研究不同脂肪酸弛豫时间及食用油掺伪检测 |
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| 中文摘要: |
| 应用低场核磁共振（LF-NMR）检测技术结合主成分分析法（PCA）对多种品牌纯葡萄籽油以及其掺有其他食用油脂的掺伪葡萄籽油进行了检测分析。研究表明， PCA可明显区分葡萄籽油、大豆油、玉米油、稻米油的LF-NMR弛豫特征数据（峰起始时间、峰顶点时间、峰结束时间、峰面积、峰高）；并且PCA得分图上能有效区分葡萄籽油中不同油脂的掺伪比例，掺伪比例越高区分效果越好，试验验证可靠。实验结果说明基于葡萄籽油的LF-NMR弛豫特征数据，结合主成分分析可实现对其是否掺伪、掺伪比例快速、有效的鉴别。 |
| 英文摘要: |
| Low field nuclear magnetic resonance (LF-NMR) detection technology combined with principal component analysis (PCA) was used to determine a variety of brand pure grape seed oil and mixed with other edible oil adulterated samples of grape seed oil. Study shows that application of PCA by analyzed LF-NMR relaxation characteristics was extremely differentiated grape seed oil from soybean oil, corn oil, rice bran oil; In addition, they were easy to separated according to corresponding principal component scores, that different ratio of adulteration in grape seed oil. With adulteration ratio of other edible oil increased, higher distinguish ability was found and experimentally verified correctly. Therefore, LF-NMR combined with PCA is feasible to distinguish quickly and effectively the variety of edible oil , the ratio of adulteration in grape seed oil. |
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