Near infrared emission photometer for measuring the oxidative stability of edible oils

Francisco Senna Vieira; Celio Pasquini

doi:10.1016/j.aca.2013.08.028

Near infrared emission photometer for measuring the oxidative stability of edible oils

Francisco Senna Vieira^*, Celio Pasquini

^*Corresponding author for this work

Not published at VTT

Universidade Estadual de Campinas

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

13 Citations (Scopus)

Abstract

Near infrared emission spectroscopy (NIRES) allows the determination of the induction time (IT) of edible oils in accelerated oxidation experiments by monitoring the emissivity of a band at 2900nm, which corresponds to the formation of hydroperoxides. In this work, a new near infrared emission photometer dedicated to the determination of oxidative stability is described. The photometer presents several advantages compared to the previously reported NIRES instrument, such as lower cost and extreme simplicity of design and maintenance. The results obtained in the evaluation of the proposed instrument were compared with the official Rancimat method and instrument. The significant advantages include: faster analysis, lower sample consumption and operational simplicity. It is demonstrated that the procedure for determination of oxidative stability of oils can be significantly simplified and performed by measuring the sample emission at only one spectral region centered at 2900nm. Also, the proposed instrument and method present precision equivalent to the Rancimat method (coefficient of variation=5.0%). A significant correlation between the methods has been found (R²=0.81).

Original language	English
Pages (from-to)	101-107
Journal	Analytica Chimica Acta
Volume	796
DOIs	https://doi.org/10.1016/j.aca.2013.08.028
Publication status	Published - 24 Sept 2013
MoE publication type	A1 Journal article-refereed

Funding

This is a contribution of the National Institute for Advanced Science and Technology (INCTAA) – Proc. FAPESP 2008/57808-1 and CNPq 573894/2008-6 . The authors are grateful to Dr. J. J. R. Rohwedder for helpful discussion during the construction of the NIRES photometer, to Dr. C.H. Collins for manuscript revision, and to Mr. Mário Shissun Toma, member of the staff of the micromechanical workshop of the Chemistry Institute of UNICAMP, for manufacturing several devices of the photometer. F. S. V. is grateful to CNPq for the MSc fellowship.

Keywords

Autoxidation
Edible oil
Instrumentation
Near infrared emission photometer
Oxidative stability

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10.1016/j.aca.2013.08.028

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title = "Near infrared emission photometer for measuring the oxidative stability of edible oils",

abstract = "Near infrared emission spectroscopy (NIRES) allows the determination of the induction time (IT) of edible oils in accelerated oxidation experiments by monitoring the emissivity of a band at 2900nm, which corresponds to the formation of hydroperoxides. In this work, a new near infrared emission photometer dedicated to the determination of oxidative stability is described. The photometer presents several advantages compared to the previously reported NIRES instrument, such as lower cost and extreme simplicity of design and maintenance. The results obtained in the evaluation of the proposed instrument were compared with the official Rancimat method and instrument. The significant advantages include: faster analysis, lower sample consumption and operational simplicity. It is demonstrated that the procedure for determination of oxidative stability of oils can be significantly simplified and performed by measuring the sample emission at only one spectral region centered at 2900nm. Also, the proposed instrument and method present precision equivalent to the Rancimat method (coefficient of variation=5.0%). A significant correlation between the methods has been found (R2=0.81).",

keywords = "Autoxidation, Edible oil, Instrumentation, Near infrared emission photometer, Oxidative stability",

author = "Vieira, {Francisco Senna} and Celio Pasquini",

note = "Funding Information: This is a contribution of the National Institute for Advanced Science and Technology (INCTAA) – Proc. FAPESP 2008/57808-1 and CNPq 573894/2008-6 . The authors are grateful to Dr. J. J. R. Rohwedder for helpful discussion during the construction of the NIRES photometer, to Dr. C.H. Collins for manuscript revision, and to Mr. M{\'a}rio Shissun Toma, member of the staff of the micromechanical workshop of the Chemistry Institute of UNICAMP, for manufacturing several devices of the photometer. F. S. V. is grateful to CNPq for the MSc fellowship.",

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doi = "10.1016/j.aca.2013.08.028",

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journal = "Analytica Chimica Acta",

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TY - JOUR

T1 - Near infrared emission photometer for measuring the oxidative stability of edible oils

AU - Vieira, Francisco Senna

AU - Pasquini, Celio

N1 - Funding Information: This is a contribution of the National Institute for Advanced Science and Technology (INCTAA) – Proc. FAPESP 2008/57808-1 and CNPq 573894/2008-6 . The authors are grateful to Dr. J. J. R. Rohwedder for helpful discussion during the construction of the NIRES photometer, to Dr. C.H. Collins for manuscript revision, and to Mr. Mário Shissun Toma, member of the staff of the micromechanical workshop of the Chemistry Institute of UNICAMP, for manufacturing several devices of the photometer. F. S. V. is grateful to CNPq for the MSc fellowship.

PY - 2013/9/24

Y1 - 2013/9/24

N2 - Near infrared emission spectroscopy (NIRES) allows the determination of the induction time (IT) of edible oils in accelerated oxidation experiments by monitoring the emissivity of a band at 2900nm, which corresponds to the formation of hydroperoxides. In this work, a new near infrared emission photometer dedicated to the determination of oxidative stability is described. The photometer presents several advantages compared to the previously reported NIRES instrument, such as lower cost and extreme simplicity of design and maintenance. The results obtained in the evaluation of the proposed instrument were compared with the official Rancimat method and instrument. The significant advantages include: faster analysis, lower sample consumption and operational simplicity. It is demonstrated that the procedure for determination of oxidative stability of oils can be significantly simplified and performed by measuring the sample emission at only one spectral region centered at 2900nm. Also, the proposed instrument and method present precision equivalent to the Rancimat method (coefficient of variation=5.0%). A significant correlation between the methods has been found (R2=0.81).

AB - Near infrared emission spectroscopy (NIRES) allows the determination of the induction time (IT) of edible oils in accelerated oxidation experiments by monitoring the emissivity of a band at 2900nm, which corresponds to the formation of hydroperoxides. In this work, a new near infrared emission photometer dedicated to the determination of oxidative stability is described. The photometer presents several advantages compared to the previously reported NIRES instrument, such as lower cost and extreme simplicity of design and maintenance. The results obtained in the evaluation of the proposed instrument were compared with the official Rancimat method and instrument. The significant advantages include: faster analysis, lower sample consumption and operational simplicity. It is demonstrated that the procedure for determination of oxidative stability of oils can be significantly simplified and performed by measuring the sample emission at only one spectral region centered at 2900nm. Also, the proposed instrument and method present precision equivalent to the Rancimat method (coefficient of variation=5.0%). A significant correlation between the methods has been found (R2=0.81).

KW - Autoxidation

KW - Edible oil

KW - Instrumentation

KW - Near infrared emission photometer

KW - Oxidative stability

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JO - Analytica Chimica Acta

JF - Analytica Chimica Acta

ER -

Near infrared emission photometer for measuring the oxidative stability of edible oils

Abstract

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Keywords

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