Rapid Screening of Mentha spicata Essential Oil and L-Menthol in Mentha piperita Essential Oil by ATR-FTIR Spectroscopy Coupled with Multivariate Analyses
Osman Taylan, Nur Çebi, Osman Sağdıç
Foods
Abstract
<i>Mentha piperita</i> essential oil (EO) has high economic importance because of its wide usage area and health-beneficial properties. Besides health-beneficial properties, <i>Mentha piperita</i> EO has great importance in the flavor and food industries because of its unique sensory and quality properties. High-valued essential oils are prone to being adulterated with economic motivations. This kind of adulteration deteriorates the quality of authentic essential oil, injures the consumers, and causes negative effects on the whole supply chain from producer to the consumer. The current research used fast, economic, robust, reliable, and effective ATR-FTIR spectroscopy coupled chemometrics of hierarchical cluster analysis(HCA), principal component analysis (PCA), partial least squares regression (PLSR) and principal component regression (PCR) for monitoring of <i>Mentha spicata</i> EO and L-menthol adulteration in <i>Mentha piperita</i> EOs. Adulterant contents (<i>Mentha spicata</i> and L-menthol) were successfully calculated using PLSR and PCR models. Standard error of the cross-validation SECV values changed between 0.06 and 2.14. Additionally, bias and press values showed alteration between 0.06 and1.43 and 0.03 and 41.15, respectively. Authentic <i>Mentha piperita</i> was successfully distinguished from adulterated samples, <i>Mentha spicata</i> and L-menthol, by HCA and PCA analysis. The results showed that attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, coupled with chemometrics could be effectively used for monitoring various adulterants in essential oils.
Extracted Claims
3 claims extracted from this paper into the knowledge graph
PLSR and PCR models used for calculating adulterant contents
“Adulterant contents (Mentha spicata and L-menthol) were successfully calculated using PLSR and PCR models.”
HCA and PCA analysis used for distinguishing authentic Mentha piperita from adulterated samples
“Authentic Mentha piperita was successfully distinguished from adulterated samples, Mentha spicata and L-menthol, by HCA and PCA analysis.”
ATR-FTIR spectroscopy used for monitoring of Mentha spicata EO and L-menthol adulteration in Mentha piperita EOs
“The current research used fast, economic, robust, reliable, and effective ATR-FTIR spectroscopy coupled chemometrics of hierarchical cluster analysis(HCA), principal component analysis (PCA), partial ...”