Rapid detection of copper chlorophyll in vegetable oils based on surface-enhanced Raman spectroscopy

Wei Nan Lian; Jessie Shiue; Huai Hsien Wang; Wei Chen Hong; Po Han Shih; Chao Kai Hsu; Ching Yi Huang; Cheng Rong Hsing; Ching Ming Wei; Juen Kai Wang; Yuh Lin Wang

doi:10.1080/19440049.2015.1014867

Rapid detection of copper chlorophyll in vegetable oils based on surface-enhanced Raman spectroscopy

Wei Nan Lian^*, Jessie Shiue, Huai Hsien Wang, Wei Chen Hong, Po Han Shih, Chao Kai Hsu, Ching Yi Huang, Cheng Rong Hsing, Ching Ming Wei, Juen Kai Wang, Yuh Lin Wang

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

29 Scopus citations

Abstract

The addition of copper chlorophyll and its derivatives (Cu-Chl) to vegetable oils to disguise them as more expensive oils, such as virgin olive oils, would not only create public confusion, but also disturb the olive oil market. Given that existing detection methods of Ch-Chl in oils, such as LC-MS are costly and time consuming, it is imperative to develop economical and fast analytical techniques to provide information quickly. This paper demonstrates a rapid analytical method based on surface-enhanced Raman spectroscopy (SERS) to detect Cu-Chl in vegetable oils; the spectroscopic markers of Cu-Chl are presented and a detection limit of 5 mg kg⁻¹ is demonstrated. The analysis of a series of commercial vegetable oils is undertaken with this method and the results verified by a government agency. This study shows that a SERS-based assessment method holds high potential for quickly pinpointing the addition of minute amounts of Cu-Chl in vegetable oils.

Original language	English
Pages (from-to)	627-634
Number of pages	8
Journal	Food Additives and Contaminants - Part A Chemistry, Analysis, Control, Exposure and Risk Assessment
Volume	32
Issue number	5
DOIs	https://doi.org/10.1080/19440049.2015.1014867
State	Published - 04 05 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015, © 2015 Taylor & Francis.

Keywords

copper chlorophyll
olive oil
Raman
SERS

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10.1080/19440049.2015.1014867

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Lian, W. N., Shiue, J., Wang, H. H., Hong, W. C., Shih, P. H., Hsu, C. K., Huang, C. Y., Hsing, C. R., Wei, C. M., Wang, J. K., & Wang, Y. L. (2015). Rapid detection of copper chlorophyll in vegetable oils based on surface-enhanced Raman spectroscopy. Food Additives and Contaminants - Part A Chemistry, Analysis, Control, Exposure and Risk Assessment, 32(5), 627-634. https://doi.org/10.1080/19440049.2015.1014867

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title = "Rapid detection of copper chlorophyll in vegetable oils based on surface-enhanced Raman spectroscopy",

abstract = "The addition of copper chlorophyll and its derivatives (Cu-Chl) to vegetable oils to disguise them as more expensive oils, such as virgin olive oils, would not only create public confusion, but also disturb the olive oil market. Given that existing detection methods of Ch-Chl in oils, such as LC-MS are costly and time consuming, it is imperative to develop economical and fast analytical techniques to provide information quickly. This paper demonstrates a rapid analytical method based on surface-enhanced Raman spectroscopy (SERS) to detect Cu-Chl in vegetable oils; the spectroscopic markers of Cu-Chl are presented and a detection limit of 5 mg kg−1 is demonstrated. The analysis of a series of commercial vegetable oils is undertaken with this method and the results verified by a government agency. This study shows that a SERS-based assessment method holds high potential for quickly pinpointing the addition of minute amounts of Cu-Chl in vegetable oils.",

keywords = "copper chlorophyll, olive oil, Raman, SERS",

author = "Lian, {Wei Nan} and Jessie Shiue and Wang, {Huai Hsien} and Hong, {Wei Chen} and Shih, {Po Han} and Hsu, {Chao Kai} and Huang, {Ching Yi} and Hsing, {Cheng Rong} and Wei, {Ching Ming} and Wang, {Juen Kai} and Wang, {Yuh Lin}",

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doi = "10.1080/19440049.2015.1014867",

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Lian, WN, Shiue, J, Wang, HH, Hong, WC, Shih, PH, Hsu, CK, Huang, CY, Hsing, CR, Wei, CM, Wang, JK & Wang, YL 2015, 'Rapid detection of copper chlorophyll in vegetable oils based on surface-enhanced Raman spectroscopy', Food Additives and Contaminants - Part A Chemistry, Analysis, Control, Exposure and Risk Assessment, vol. 32, no. 5, pp. 627-634. https://doi.org/10.1080/19440049.2015.1014867

Rapid detection of copper chlorophyll in vegetable oils based on surface-enhanced Raman spectroscopy. / Lian, Wei Nan; Shiue, Jessie; Wang, Huai Hsien et al.
In: Food Additives and Contaminants - Part A Chemistry, Analysis, Control, Exposure and Risk Assessment, Vol. 32, No. 5, 04.05.2015, p. 627-634.

Research output: Contribution to journal › Journal Article › peer-review

TY - JOUR

T1 - Rapid detection of copper chlorophyll in vegetable oils based on surface-enhanced Raman spectroscopy

AU - Lian, Wei Nan

AU - Shiue, Jessie

AU - Wang, Huai Hsien

AU - Hong, Wei Chen

AU - Shih, Po Han

AU - Hsu, Chao Kai

AU - Huang, Ching Yi

AU - Hsing, Cheng Rong

AU - Wei, Ching Ming

AU - Wang, Juen Kai

AU - Wang, Yuh Lin

PY - 2015/5/4

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N2 - The addition of copper chlorophyll and its derivatives (Cu-Chl) to vegetable oils to disguise them as more expensive oils, such as virgin olive oils, would not only create public confusion, but also disturb the olive oil market. Given that existing detection methods of Ch-Chl in oils, such as LC-MS are costly and time consuming, it is imperative to develop economical and fast analytical techniques to provide information quickly. This paper demonstrates a rapid analytical method based on surface-enhanced Raman spectroscopy (SERS) to detect Cu-Chl in vegetable oils; the spectroscopic markers of Cu-Chl are presented and a detection limit of 5 mg kg−1 is demonstrated. The analysis of a series of commercial vegetable oils is undertaken with this method and the results verified by a government agency. This study shows that a SERS-based assessment method holds high potential for quickly pinpointing the addition of minute amounts of Cu-Chl in vegetable oils.

AB - The addition of copper chlorophyll and its derivatives (Cu-Chl) to vegetable oils to disguise them as more expensive oils, such as virgin olive oils, would not only create public confusion, but also disturb the olive oil market. Given that existing detection methods of Ch-Chl in oils, such as LC-MS are costly and time consuming, it is imperative to develop economical and fast analytical techniques to provide information quickly. This paper demonstrates a rapid analytical method based on surface-enhanced Raman spectroscopy (SERS) to detect Cu-Chl in vegetable oils; the spectroscopic markers of Cu-Chl are presented and a detection limit of 5 mg kg−1 is demonstrated. The analysis of a series of commercial vegetable oils is undertaken with this method and the results verified by a government agency. This study shows that a SERS-based assessment method holds high potential for quickly pinpointing the addition of minute amounts of Cu-Chl in vegetable oils.

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JF - Food Additives and Contaminants - Part A Chemistry, Analysis, Control, Exposure and Risk Assessment

IS - 5

ER -

Rapid detection of copper chlorophyll in vegetable oils based on surface-enhanced Raman spectroscopy

Abstract

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Keywords

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