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[1]彭 恒,候华毅,陈相柏*.三种不饱和脂肪酸的拉曼光谱及DFT计算快速鉴别方法的研究[J].武汉工程大学学报,2018,40(06):597-600.[doi:10. 3969/j. issn. 16742869. 2018. 06. 002]
 PENG Heng,HOU Huayi,CHEN Xiangbai*.Differentiation of Three Types of Unsaturated Fatty Acids in Edible Oils by Raman Spectroscopy and DFT Calculation[J].Journal of Wuhan Institute of Technology,2018,40(06):597-600.[doi:10. 3969/j. issn. 16742869. 2018. 06. 002]
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三种不饱和脂肪酸的拉曼光谱及DFT计算快速鉴别方法的研究(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
40
期数:
2018年06期
页码:
597-600
栏目:
化学与化学工程
出版日期:
2018-12-28

文章信息/Info

Title:
Differentiation of Three Types of Unsaturated Fatty Acids in Edible Oils by Raman Spectroscopy and DFT Calculation
文章编号:
20180602
作者:
彭 恒 候华毅 陈相柏*
武汉工程大学光电信息与能源工程学院,湖北 武汉 430205
Author(s):
PENG Heng HOU Huayi CHEN Xiangbai*
SchoolofOpticalInformationandEnergyEngineering, Wuhan Institute of Technology, Wuhan 430205, China
关键词:
拉曼光谱密度泛函理论相对强度分析不饱和脂肪酸
Keywords:
Raman spectroscopy DFT calculation relative intensity analysis unsaturated fatty acid
分类号:
O433.4
DOI:
10. 3969/j. issn. 16742869. 2018. 06. 002
文献标志码:
A
摘要:
为了快速区分食用油中油酸、亚油酸和亚麻酸这三种重要的不饱和脂肪酸,通过激光拉曼光谱实验和密度泛函理论计算两种方法分析并且比较了这三种不饱和脂肪酸的分子振动光谱。结合532 nm和785 nm两种光谱仪的实验结果与理论计算数据,这三种不饱和脂肪酸位于1 660 cm-1和1 440 cm-1两处振动模式相对强度的比值随三种不饱和脂肪酸中C=C双键个数的增加而增加。这提供了一种快速区分不同类型不饱和脂肪酸的方法, 将对食用油品质的快速检测有重要帮助。
Abstract:
To differentiate three types of important unsaturated fatty acids, oleic acid (OA), linoleic acid (LA), and α-linolenic acid (ALA) in edible oils, we investigated their molecular vibrational modes by Raman scattering experiment and density functional theory (DFT) calculation. Combining the theoretical calculation data with the experimental results obtained from 532 nm and 785 nm laser excitations, we found that the relative intensity ratio of two characteristic vibration modes at 1 660 cm-1 and 1 440 cm-1 increased systematically with increasing the number of C=C double bond in OA, LA, and ALA. The present work provides a simple approach for quick differentiation of different types of unsaturated fatty acids, which is very helpful for quick quality evaluation of edible oils.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-07-28基金项目:国家自然科学基金(11574241)作者简介:彭 恒,硕士研究生。E-mail:[email protected]*通讯作者:陈相柏,博士,教授。E-mail:[email protected]引文格式:彭恒, 候华毅, 陈相柏. 三种不饱和脂肪酸的拉曼光谱及DFT计算快速鉴别方法的研究[J]. 武汉工程大学学报,2018,40(6):597-600.
更新日期/Last Update: 2018-12-22